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Apomictic Grasses
Name ten grasses in different genera that are apomictic!!!
Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Monoculture is strictly for convenience. Grasses need to have plants in close proximity because they are wind pollinated. Plenty are apomictic. There is no "wild" maize. The wild relatives have no cob and are called Teosinte. nobody wrote in message .. . On Sat, 23 Aug 2003 12:18:43 +1000, "Frank Martin" wrote: Are some plants better planted in a group of their fellows than just singly? My grandmother says some plants are like flocks of birds and do better in a group. Does anyone know about this? In order to produce good ears, corn must be planted pretty densely. As I recall, you need to have at least three or four rows to get any ears of corn. But, that is the way man has cultivated the plant... i dont know if wild maize has similar population density requirements. But I wouldnt doubt that wind pollinated plants need to have others nearby in order to set seed. Cheers, Phred. -- LID |
Apomictic Grasses
"Cereoid-UR12-" wrote in message m...
Name ten grasses in different genera that are apomictic!!! Eragrostis, Chloris, Brachiaria, Cenchris, Panicum, Paspalum, Pennisetum, Tripsacum, Hyparrhenia, Poa. Many important forage grass species are obligate or facultative apomicts. -- Chris Green |
Apomictic Grasses
We await, breathlessly, the expected riposte from our brother-in-biology
Cereoid-UR12-.....! "Christopher Green" wrote in message om... "Cereoid-UR12-" wrote in message m... Name ten grasses in different genera that are apomictic!!! Eragrostis, Chloris, Brachiaria, Cenchris, Panicum, Paspalum, Pennisetum, Tripsacum, Hyparrhenia, Poa. Many important forage grass species are obligate or facultative apomicts. -- Chris Green |
Apomictic Grasses
On 24 Aug 2003 16:27, "Cereoid-UR12-" wrote:
Name ten grasses in different genera that are apomictic!!! Two of them: Poa alpina L. Festuca airoides Lam. Both species produces apomictic varietes/forms in high mountains. Regards, -- /\/\ichal Smoczyk, msmoczykNOSPAM(at)wp.pl ===delete 'NOSPAM' from my address=== |
Apomictic Grasses
Would have preferred that Phred answered the question himself instead of
your deliberate obfuscation. Yes, those are genera of grasses but which actual species in those genera are apomictic, if any? A list of generic names alone tells us nothing. Christopher Green wrote in message om... "Cereoid-UR12-" wrote in message m... Name ten grasses in different genera that are apomictic!!! Eragrostis, Chloris, Brachiaria, Cenchris, Panicum, Paspalum, Pennisetum, Tripsacum, Hyparrhenia, Poa. Many important forage grass species are obligate or facultative apomicts. -- Chris Green |
Apomictic Grasses
Even though he did not answer the question, he did list the names of genera
of grasses. Thats far more than you can do, Frankfurter!!! Frank Martin wrote in message ... We await, breathlessly, the expected riposte from our brother-in-biology Cereoid-UR12-.....! "Christopher Green" wrote in message om... "Cereoid-UR12-" wrote in message m... Name ten grasses in different genera that are apomictic!!! Eragrostis, Chloris, Brachiaria, Cenchris, Panicum, Paspalum, Pennisetum, Tripsacum, Hyparrhenia, Poa. Many important forage grass species are obligate or facultative apomicts. -- Chris Green |
Apomictic Grasses
Finally, an actual answer from somebody that knows!!!!
Two down and eight to go!!! /\/\ichau wrote in message ... On 24 Aug 2003 16:27, "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Two of them: Poa alpina L. Festuca airoides Lam. Both species produces apomictic varietes/forms in high mountains. Regards, -- /\/\ichal Smoczyk, msmoczykNOSPAM(at)wp.pl ===delete 'NOSPAM' from my address=== |
Apomictic Grasses
In article ,
[/\\/\\ichau] wrote... On 24 Aug 2003 16:27, "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Sounds like fun, but why do you ask? Is this perhaps from someone's homework assignment? [A "please" might work better than the three exclamation points.] Two of them: Poa alpina L. Festuca airoides Lam. Both species produces apomictic varietes/forms in high mountains. Okay, then that's two species and genera. Let's look for some more. http://www.apomixis.de/back.htm: "Apomictic processes have been observed in many plant species and are most common in the Gramineae, Compositae and Rosaceae." "But with the exception of Citrus, Malus and some forage grasses like Poa and Panicum, apomixis is not very common in agriculturally important crops (Koltunow, 1993)." "New strategies and methods are now in progress to compare sexual and apomictic varieties of grass species, like e.g. Poa, Paspalum and Brachiaria, and to map the corresponding genes." "Molecular tools have been developed to compare sexual and apomictic ovaries in Pennisetum (Vielle-Calzada et al., 1996b)" "In apomictic Tripsacum RFLP and PCR-RAPD markers co-segregating with diplospory have been mapped to the same locus (Leblanc et al., 1995b; Kindinger et al., 1996)" http://www.hort.purdue.edu/newcrop/p...93/V2-294.html "Buffelgrass, Cenchrus ciliaris L. [...] They are the product of plant breeding made possible by the discovery of a sexual plant that could be crossed with apomictic introductions and release their variability (Bashaw 1980)." "Weeping lovegrass, Eragrostis curvula (Schrad.) Nees [...] It reproduces by obligate apomixis that has blocked genetic improvement until recently." Brachiaria decumbens Stapf. Cenchrus ciliaris L. Eragrostis curvula (Schrad.) Nees Panicum maximum Jacq. http://www.hort.purdue.edu/newcrop/p...90/v1-174.html: "[...] and the obligate apomictic dallisgrass, Paspalum dilatatum Poir. have not been improved." "The tetraploid bahiagrasses, Paspalum notatum Flugge from South America are obligate apomicts and breed true." http://herbarium.usu.edu/Reports/publications.htm: [...]"the apomictic Poa secunda Presl. complex" [...]"apomictic Elymus rectisetus (Nees in Lehm.) A. Löve & Connor" "Characterization of pseudogamy in an apomictic rice line." http://tncweeds.ucdavis.edu/esadocs/...s/cortjub.html: "Cortaderia jubata [...] There are populations of Cortaderia that consist entirely of pistillate (female) plants that form seed without the necessity of pollination (apomixis) (Costas Lippmann 1976)." http://www.griffin.peachnet.edu/cssc...spalum/ref.htm: "sexual diploid biotypes of two apomictic Paspalum species" "A biosystemic study of selected facultative apomictic species of Pennisetum" http://www.botany.hawaii.edu/faculty...blications.htm: "Morden, C. W. and S. L. Hatch. 1986. Vegetative apomixis in Muhlenbergia repens (Poaceae: Eragrostideae). SIDA 11: 282-285" How many genera is that so far? Eleven, I think. Let's try Biological Abstracts for some mo Apomixis in guineagrass (Panicum maximum Jacq.). Wang-Yan; Xu-Qiu-sheng; Ye-Xiu-lin {a} Journal-of-Tropical-and-Subtropical-Botany. [print] 2003; 11 (1): 83-86. Influence of photoperiod on facultative apomixis in Apluda mutica. Ma-San-mei; Wang-Yong-fei; Ye-Xiu-lin {a}; Zhao-Nan-xian; Liang-Cheng-Ye Journal-of-Tropical-and-Subtropical-Botany. [print] 2003; 11 (1): 64-66. Sexual and apomictic seed development in the vulnerable grass Bothriochloa biloba. Yu-Ping {a}; Prakash-N; Whalley-R-D-B Australian-Journal-of-Botany. [print] 2003; 51 (1): 75-84. Once again: The correct name of the endemic Calamagrostis from Saxony (Germany). Raus-Th {a}; Scholz-H {a} Feddes-Repertorium. [print] 2002; 113 (3-4): 271-272. "[...]the correct species name of the apomictic Calamagrostis endemic to Saxony, hitherto known as C. pseudopurpurea, is C. rivalis." Reproductive ecology of a native Hawaiian grass (Heteropogon contortus; Poaceae) versus its invasive alien competitor (Pennisetum setaceum; Poaceae). Goergen-Erin; Daehler-Curtis-C {a} International-Journal-of-Plant-Sciences. [print] March, 2001; 162 (2): 317-326. "Both species are drought-tolerant, perennial, C4 bunch-grasses that rely on apomictic seeds for reproduction. " The influence of fire on the demography of a dominant grass species of West African savannas, Hyparrhenia diplandra. Garnier-Lisa-K-M; Dajoz-Isabelle {a} Journal-of-Ecology. [print] April, 2001; 89 (2): 200-208. "differences between clones showed that growth rate also had a genetic basis in this apomictic species." Genetic variability and phytogeography of Miscanthus sinensis var. condensatus, an apomictic grass, based on RAPD fingerprints. Chou-Chang-Hung; Chiang-Yu-Chung; Chiang-Tzen-Yuh {a} Canadian-Journal-of-Botany. [print] October, 2000; 78 (10): 1262-1268. An apomictic autotriploid line TAR identified in Oryza sativa. Liu-Yong-Sheng {a}; Sung-Jing-San; Hsu-Francis {a} Acta-Botanica-Sinica. 1996; 38 (11) 917-920. Embryological study on apomixis in a sorghum line SSA-1. Wu-Shu-Biao {a}; Shang-Yong-Jin {a}; Han-Xue-Mei {a}; Wang-Jing-Xue {a}; Niu-Tian-Tang; Zhang-Fu-Yao; Wei-Yao-Ming; Meng-Cue-Gang; Yan-Xi-Mei; Zheng-Jing-Bo Acta-Botanica-Sinica. 1994; 36 (11) 833-837. Evolution of reproduction in Lamprothyrsus (Arundineae: Gramineae). Connor-H-E {a}; Dawson-M-I Annals-of-the-Missouri-Botanical-Garden. 1993; 80 (2) 513-517. Lamprothyrsus, a ditypic arundinoid, South American grass genus, consists predominantly of populations of exclusively female plants in which seeds are set by autonomous apospory. A cytogenetic study of a hexaploid Themeda triandra Forssk. population. Fossey-Annabel; Liebenberg-H South-African-Journal-of-Botany. 1992; 58 (4) 275-276. "The data support the fact that the hexaploids are near obligate apomicts." Apomixis in the gramineae. Ma-Guo-hua {a}; Zhao-Nan-xian {a}; Huang-Xue-lin Journal-of-Tropical-and-Subtropical-Botany. [print] 2001; 9 (1): 83-92. Gramineae is one of the largest families with widest distribution on the globe. It contains most important crops in the world including a great number of apomictic species. Apomixis has great potentialities for utilization of crop hybrid vigor. However, apomixis as a reproductive way of diversity in plant revolution is very comprehensive. In this paper, the distribution of apomictic species in Gramineae is reviewed. Advance in studies on apomixes in aspects of cytology, genetics and molecular biology are also summarized. The structure of agamocomplexes and the problem of saltatory speciation in angiosperms. Kashin-A-S Botanicheskii-Zhurnal-St-Petersburg. Jan., 1999; 84 (1): 15-29. Russian; Non-English Summary: English; Russian [among the organisms listed: Bothriochloa- (Gramineae-); Calamagrostis- (Gramineae-); Dichanthium- (Gramineae-);Poa- (Gramineae-)] Okay, so far we've got about 19 - 20 or so grass genera with known apomictic forms. I''ve no doubt there are plenty more. cheers |
Apomictic Grasses
"Christopher Green" skrev i en meddelelse om... "Cereoid-UR12-" wrote in message m... Name ten grasses in different genera that are apomictic!!! Eragrostis, Chloris, Brachiaria, Cenchris, Panicum, Paspalum, Pennisetum, Tripsacum, Hyparrhenia, Poa. Many important forage grass species are obligate or facultative apomicts. Could you give som examples to species complexes compareable with i.e. Rubus and former Potentilla argentea? Poul Evald Hansen |
Apomictic Grasses
"Cereoid-UR12-" wrote in message m...
Would have preferred that Phred answered the question himself instead of your deliberate obfuscation. Yes, those are genera of grasses but which actual species in those genera are apomictic, if any? A list of generic names alone tells us nothing. Look 'em up yourself. There are hundreds. -- Chris Green |
Apomictic Grasses
In article ,
"Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
I'm not a student, Buckwheat.
I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
( Yawn.....! )
"Cereoid-UR12-" wrote in message m... No, its because Phred boldly proclaimed in this newsgroup that many grasses are apomictic without giving any actual examples. There are far too many bold platitudes that people make in the guise of scientific fact that prove not to be true under closer examination. I wanted the dude to give actual proof of what he claimed. So far, he has not replied. I tend not to believe people who cannot back what they claim. Michau generously provided two examples of apomictic grasses but that hardly constitutes "many". Thank you Mel for providing actual references and actual species names. Phred and prissy Chris Green can eat your dust!!! mel turner wrote in message ... In article , [/\\/\\ichau] wrote... On 24 Aug 2003 16:27, "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Sounds like fun, but why do you ask? Is this perhaps from someone's homework assignment? [A "please" might work better than the three exclamation points.] Two of them: Poa alpina L. Festuca airoides Lam. Both species produces apomictic varietes/forms in high mountains. Okay, then that's two species and genera. Let's look for some more. http://www.apomixis.de/back.htm: "Apomictic processes have been observed in many plant species and are most common in the Gramineae, Compositae and Rosaceae." "But with the exception of Citrus, Malus and some forage grasses like Poa and Panicum, apomixis is not very common in agriculturally important crops (Koltunow, 1993)." "New strategies and methods are now in progress to compare sexual and apomictic varieties of grass species, like e.g. Poa, Paspalum and Brachiaria, and to map the corresponding genes." "Molecular tools have been developed to compare sexual and apomictic ovaries in Pennisetum (Vielle-Calzada et al., 1996b)" "In apomictic Tripsacum RFLP and PCR-RAPD markers co-segregating with diplospory have been mapped to the same locus (Leblanc et al., 1995b; Kindinger et al., 1996)" http://www.hort.purdue.edu/newcrop/p...93/V2-294.html "Buffelgrass, Cenchrus ciliaris L. [...] They are the product of plant breeding made possible by the discovery of a sexual plant that could be crossed with apomictic introductions and release their variability (Bashaw 1980)." "Weeping lovegrass, Eragrostis curvula (Schrad.) Nees [...] It reproduces by obligate apomixis that has blocked genetic improvement until recently." Brachiaria decumbens Stapf. Cenchrus ciliaris L. Eragrostis curvula (Schrad.) Nees Panicum maximum Jacq. http://www.hort.purdue.edu/newcrop/p...90/v1-174.html: "[...] and the obligate apomictic dallisgrass, Paspalum dilatatum Poir. have not been improved." "The tetraploid bahiagrasses, Paspalum notatum Flugge from South America are obligate apomicts and breed true." http://herbarium.usu.edu/Reports/publications.htm: [...]"the apomictic Poa secunda Presl. complex" [...]"apomictic Elymus rectisetus (Nees in Lehm.) A. Löve & Connor" "Characterization of pseudogamy in an apomictic rice line." http://tncweeds.ucdavis.edu/esadocs/...s/cortjub.html: "Cortaderia jubata [...] There are populations of Cortaderia that consist entirely of pistillate (female) plants that form seed without the necessity of pollination (apomixis) (Costas Lippmann 1976)." http://www.griffin.peachnet.edu/cssc...spalum/ref.htm: "sexual diploid biotypes of two apomictic Paspalum species" "A biosystemic study of selected facultative apomictic species of Pennisetum" http://www.botany.hawaii.edu/faculty...blications.htm: "Morden, C. W. and S. L. Hatch. 1986. Vegetative apomixis in Muhlenbergia repens (Poaceae: Eragrostideae). SIDA 11: 282-285" How many genera is that so far? Eleven, I think. Let's try Biological Abstracts for some mo Apomixis in guineagrass (Panicum maximum Jacq.). Wang-Yan; Xu-Qiu-sheng; Ye-Xiu-lin {a} Journal-of-Tropical-and-Subtropical-Botany. [print] 2003; 11 (1): 83-86. Influence of photoperiod on facultative apomixis in Apluda mutica. Ma-San-mei; Wang-Yong-fei; Ye-Xiu-lin {a}; Zhao-Nan-xian; Liang-Cheng-Ye Journal-of-Tropical-and-Subtropical-Botany. [print] 2003; 11 (1): 64-66. Sexual and apomictic seed development in the vulnerable grass Bothriochloa biloba. Yu-Ping {a}; Prakash-N; Whalley-R-D-B Australian-Journal-of-Botany. [print] 2003; 51 (1): 75-84. Once again: The correct name of the endemic Calamagrostis from Saxony (Germany). Raus-Th {a}; Scholz-H {a} Feddes-Repertorium. [print] 2002; 113 (3-4): 271-272. "[...]the correct species name of the apomictic Calamagrostis endemic to Saxony, hitherto known as C. pseudopurpurea, is C. rivalis." Reproductive ecology of a native Hawaiian grass (Heteropogon contortus; Poaceae) versus its invasive alien competitor (Pennisetum setaceum; Poaceae). Goergen-Erin; Daehler-Curtis-C {a} International-Journal-of-Plant-Sciences. [print] March, 2001; 162 (2): 317-326. "Both species are drought-tolerant, perennial, C4 bunch-grasses that rely on apomictic seeds for reproduction. " The influence of fire on the demography of a dominant grass species of West African savannas, Hyparrhenia diplandra. Garnier-Lisa-K-M; Dajoz-Isabelle {a} Journal-of-Ecology. [print] April, 2001; 89 (2): 200-208. "differences between clones showed that growth rate also had a genetic basis in this apomictic species." Genetic variability and phytogeography of Miscanthus sinensis var. condensatus, an apomictic grass, based on RAPD fingerprints. Chou-Chang-Hung; Chiang-Yu-Chung; Chiang-Tzen-Yuh {a} Canadian-Journal-of-Botany. [print] October, 2000; 78 (10): 1262-1268. An apomictic autotriploid line TAR identified in Oryza sativa. Liu-Yong-Sheng {a}; Sung-Jing-San; Hsu-Francis {a} Acta-Botanica-Sinica. 1996; 38 (11) 917-920. Embryological study on apomixis in a sorghum line SSA-1. Wu-Shu-Biao {a}; Shang-Yong-Jin {a}; Han-Xue-Mei {a}; Wang-Jing-Xue {a}; Niu-Tian-Tang; Zhang-Fu-Yao; Wei-Yao-Ming; Meng-Cue-Gang; Yan-Xi-Mei; Zheng-Jing-Bo Acta-Botanica-Sinica. 1994; 36 (11) 833-837. Evolution of reproduction in Lamprothyrsus (Arundineae: Gramineae). Connor-H-E {a}; Dawson-M-I Annals-of-the-Missouri-Botanical-Garden. 1993; 80 (2) 513-517. Lamprothyrsus, a ditypic arundinoid, South American grass genus, consists predominantly of populations of exclusively female plants in which seeds are set by autonomous apospory. A cytogenetic study of a hexaploid Themeda triandra Forssk. population. Fossey-Annabel; Liebenberg-H South-African-Journal-of-Botany. 1992; 58 (4) 275-276. "The data support the fact that the hexaploids are near obligate apomicts." Apomixis in the gramineae. Ma-Guo-hua {a}; Zhao-Nan-xian {a}; Huang-Xue-lin Journal-of-Tropical-and-Subtropical-Botany. [print] 2001; 9 (1): 83-92. Gramineae is one of the largest families with widest distribution on the globe. It contains most important crops in the world including a great number of apomictic species. Apomixis has great potentialities for utilization of crop hybrid vigor. However, apomixis as a reproductive way of diversity in plant revolution is very comprehensive. In this paper, the distribution of apomictic species in Gramineae is reviewed. Advance in studies on apomixes in aspects of cytology, genetics and molecular biology are also summarized. The structure of agamocomplexes and the problem of saltatory speciation in angiosperms. Kashin-A-S Botanicheskii-Zhurnal-St-Petersburg. Jan., 1999; 84 (1): 15-29. Russian; Non-English Summary: English; Russian [among the organisms listed: Bothriochloa- (Gramineae-); Calamagrostis- (Gramineae-); Dichanthium- (Gramineae-);Poa- (Gramineae-)] Okay, so far we've got about 19 - 20 or so grass genera with known apomictic forms. I''ve no doubt there are plenty more. cheers |
Apomictic Grasses
Surely this reply is too astringent and acerbic and not in keeping with the
respect due to fellow scientists. Phred may be some nascent biologist whose botanical heart has just been crushed by your cruel put-downs. Do you want that on your conscience? "Cereoid-UR12-" wrote in message m... I'm not a student, Buckwheat. I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
Are you Phredo's mother?
I'm sure Phredo is a big boy and he can take care of himself and doesn't need your coddling. I suppose you have never seen or heard the heated arguments that grass taxonomists at the Smithsonian sometimes get into. Taxonomy is not for the faint of heart or sissy cry babies. So why don't you go back to your sterile plastic bubble and twiddle your thumbs!!! "Phredo, you broke my heart." Frank Martin wrote in message ... Surely this reply is too astringent and acerbic and not in keeping with the respect due to fellow scientists. Phred may be some nascent biologist whose botanical heart has just been crushed by your cruel put-downs. Do you want that on your conscience? "Cereoid-UR12-" wrote in message m... I'm not a student, Buckwheat. I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
In article ,
"Cereoid-UR12-" wrote: I'm not a student, Buckwheat. Well at least we can agree on something. Cheers, Phred. -- LID |
Apomictic Grasses
Tsk! I see that velociraptors are not the only vicious sharp-toothed
sabre-clawed reptilian throwbacks who live and lurk in the tall grass. Do all your students/professors cringe and cower in corners apon your arrival? I find myself warming to threshers, winnowers, back-burners, gleaners and Round-up applicators. "Cereoid-UR12-" wrote in message . .. Are you Phredo's mother? I'm sure Phredo is a big boy and he can take care of himself and doesn't need your coddling. I suppose you have never seen or heard the heated arguments that grass taxonomists at the Smithsonian sometimes get into. Taxonomy is not for the faint of heart or sissy cry babies. So why don't you go back to your sterile plastic bubble and twiddle your thumbs!!! "Phredo, you broke my heart." Frank Martin wrote in message ... Surely this reply is too astringent and acerbic and not in keeping with the respect due to fellow scientists. Phred may be some nascent biologist whose botanical heart has just been crushed by your cruel put-downs. Do you want that on your conscience? "Cereoid-UR12-" wrote in message m... I'm not a student, Buckwheat. I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
In article ,
Phred wrote: (And I suppose we could even throw in Zea now.) Zea? Wow. When did this happen? It would be cool to have sweet corn that could be planted in really small patches and still have plenty of kernels per cob. I'd really like a cultivar that I could plant a little every week and get maybe half a dozen cobs per week. |
Apomictic Grasses
Now you are just babbling.
Frank Martin wrote in message ... Tsk! I see that velociraptors are not the only vicious sharp-toothed sabre-clawed reptilian throwbacks who live and lurk in the tall grass. Do all your students/professors cringe and cower in corners apon your arrival? I find myself warming to threshers, winnowers, back-burners, gleaners and Round-up applicators. "Cereoid-UR12-" wrote in message . .. Are you Phredo's mother? I'm sure Phredo is a big boy and he can take care of himself and doesn't need your coddling. I suppose you have never seen or heard the heated arguments that grass taxonomists at the Smithsonian sometimes get into. Taxonomy is not for the faint of heart or sissy cry babies. So why don't you go back to your sterile plastic bubble and twiddle your thumbs!!! "Phredo, you broke my heart." Frank Martin wrote in message ... Surely this reply is too astringent and acerbic and not in keeping with the respect due to fellow scientists. Phred may be some nascent biologist whose botanical heart has just been crushed by your cruel put-downs. Do you want that on your conscience? "Cereoid-UR12-" wrote in message m... I'm not a student, Buckwheat. I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
It never did happen.
Phredo completely misunderstood what was previously said by nobody. (How appropriate!!!) nobody wrote in message ... In order to produce good ears, corn must be planted pretty densely. As I recall, you need to have at least three or four rows to get any ears of corn. But, that is the way man has cultivated the plant... i dont know if wild maize has similar population density requirements. But I wouldnt doubt that wind pollinated plants need to have others nearby in order to set seed. Beverly Erlebacher wrote in message . .. In article , Phred wrote: (And I suppose we could even throw in Zea now.) Zea? Wow. When did this happen? It would be cool to have sweet corn that could be planted in really small patches and still have plenty of kernels per cob. I'd really like a cultivar that I could plant a little every week and get maybe half a dozen cobs per week. |
Apomictic Grasses
Dnia 03-08-26 04:21, U¿ytkownik Cereoid-UR12- napisa³:
Yes, those are genera of grasses but which actual species in those genera are apomictic, if any? A list of generic names alone tells us nothing. Try to find by yourself in http://www.google.com (or any other search engine) if you don't believe. It's works better than your discussion... And according to *netiquette* please, answer below the cited (original if you wish) message. Best regards, Michau -- /\/\ichal Smoczyk, msmoczykNOSPAM(at)wp.pl ===delete 'NOSPAM' from my address=== |
Apomictic Grasses
In article ,
Cereoid-UR12- wrote: It never did happen. Phredo completely misunderstood what was previously said by nobody. (How appropriate!!!) I'll believe Phred before I'll believe you, since his posts are usually well informed and lacking in childishness. If someone has discovered apomixis in Zea, it's an interesting development, and I'd like to hear more about it. The way he phrased it: (And I suppose we could even throw in Zea now.) makes it sound like it's a very new development, or perhaps that it was achieved by unusual means. Hmm, 30 seconds with google shows that there's a lot of work being done hybridizing Zea and Tripsacum, and investigating apomixis in the hybrids, including efforts to produce apomictic maize cultivars. I get 537 hits, mostly to journal articles, some as prestigious as Nature, and to research laboratories and university courses in plant science. What's more, there are bibliographic refs back to the 1970s, so it's not even new. Phred (knowledge) 1 Cereoid (childishness) 0 |
Apomictic Grasses
I included the original statement made in the thread concerning Zea. There
is no mention of apomixis in that genus nor has there been any discovery of it occurring in the genus. If you would rather believe a false claim made by Phredo without any actual proof, then you have learned nothing at all. Once again you have proven to be the arrogant imbecile, Bev, because you willingly believe the wrong person for the wrong reasons. You have been and remain a disappointment not worthy of serious consideration. Zea x Tripsacum hybrids are NOT the same thing as pure lines in the genus Zea. The intergeneric hybrids were not commercially viable. http://www.apomixis.de/APO2001_Abstract_Book.doc. "APOMICTIC MAIZE: PROBLEMS AND PERSPECTIVES Victor A. Sokolov, Irina V. Khatypova The attempts to find genetically controlled apomixis in diploid or tetraploid maize failed. So at our laboratory a course, traditional in such cases, was taken - transfer of a character, necessary from the selection point of view, from the closest relatives by a way of distant hybridization. The closest relative of maize having an apomictic mode of reproduction is tetraploid Tripsacum (Tripsacum dactyloides) 2n=4x=72. So with the purpose of obtaining apomictic maize hybridization of 2n=4x=40 Zea mays with Tripsacum was conducted. The amphidiploid F1 hybrids had 2n=56 (20Zm + 36Td) and were apomicts having a female fertility at the Tripsacum level with a total male sterility. Their backcrosses using 2n=20 and 2n=4x=40 pollen parents allowed to develop a wide set of apomictic lines with reduction of Tripsacum chromosomes to 9. Despite the fact that they were obtained independently all they have the same set of 9 chromosomes of Tripsacum. The further reduction even by one chromosome of Tripsacum leads to the loss of the apomictic mode of reproduction and as a consequence to the loss of all gamagrass chromosomes in subsequent generations. The cytogenetic analysis showed the polygenic character of the genetic system providing the apomictic development in Tripsacum and its hybrids with maize. So we try to obtain from the highly imperfect 39-chromosome hybrids of maize with Tripsacum lines that wouldn’t be inferior to maize in kernel productivity and quality." Beverly Erlebacher wrote in message . .. In article , Cereoid-UR12- wrote: It never did happen. Phredo completely misunderstood what was previously said by nobody. (How appropriate!!!) I'll believe Phred before I'll believe you, since his posts are usually well informed and lacking in childishness. If someone has discovered apomixis in Zea, it's an interesting development, and I'd like to hear more about it. The way he phrased it: (And I suppose we could even throw in Zea now.) makes it sound like it's a very new development, or perhaps that it was achieved by unusual means. Hmm, 30 seconds with google shows that there's a lot of work being done hybridizing Zea and Tripsacum, and investigating apomixis in the hybrids, including efforts to produce apomictic maize cultivars. I get 537 hits, mostly to journal articles, some as prestigious as Nature, and to research laboratories and university courses in plant science. What's more, there are bibliographic refs back to the 1970s, so it's not even new. Phred (knowledge) 1 Cereoid (childishness) 0 |
Apomictic Grasses
Are you at a loss for words.........?
"Cereoid-UR12-" wrote in message . .. Now you are just babbling. Frank Martin wrote in message ... Tsk! I see that velociraptors are not the only vicious sharp-toothed sabre-clawed reptilian throwbacks who live and lurk in the tall grass. Do all your students/professors cringe and cower in corners apon your arrival? I find myself warming to threshers, winnowers, back-burners, gleaners and Round-up applicators. "Cereoid-UR12-" wrote in message . .. Are you Phredo's mother? I'm sure Phredo is a big boy and he can take care of himself and doesn't need your coddling. I suppose you have never seen or heard the heated arguments that grass taxonomists at the Smithsonian sometimes get into. Taxonomy is not for the faint of heart or sissy cry babies. So why don't you go back to your sterile plastic bubble and twiddle your thumbs!!! "Phredo, you broke my heart." Frank Martin wrote in message ... Surely this reply is too astringent and acerbic and not in keeping with the respect due to fellow scientists. Phred may be some nascent biologist whose botanical heart has just been crushed by your cruel put-downs. Do you want that on your conscience? "Cereoid-UR12-" wrote in message m... I'm not a student, Buckwheat. I just want you to put your money where you flip mouth is, you superficial smartass. You still haven't answered the question, you ******. I asked for a list of SPECIES in ten different genera not just random list of generic names. Any idiot can randomly throw out the names of genera and you have proven that. Most if not all of the species in those genera ARE NOT APOMICTIC. That makes you the lazy parasite who cannot back the outrageous statements you make. Phred wrote in message ... In article , "Cereoid-UR12-" wrote: Name ten grasses in different genera that are apomictic!!! Here's a few you can look up... but I'm stuffed if I'm going to do *all* your homework for you, so look up the details for yourself and don't be a typical lazy student parasitising the web. In no particular order: Brachiaria, Paspalum, Eragrostis, Poa, Dichanthium, Tripsacum, Cenchrus, Pennisetum, Panicum, Hyparrhenia, Vetiveria, Themeda, Heteropogon, Bouteloua, Bothriochloa, Capillipedium... (And I suppose we could even throw in Zea now.) Cheers, Phred. -- LID |
Apomictic Grasses
In article ,
Cereoid-UR12- wrote: I included the original statement made in the thread concerning Zea. There is no mention of apomixis in that genus nor has there been any discovery of it occurring in the genus. The way Phred phrased it made it sound like there was an interesting story or recent development behind it, which I hope he'll share with us. If you would rather believe a false claim made by Phredo without any actual proof, then you have learned nothing at all. You're right. I'm so gullible I have absolutely no ability to run my own intellectual life. I'm ineducable. It's not worth wasting your time on me. Once again you have proven to be the arrogant imbecile, Bev, because you willingly believe the wrong person for the wrong reasons. You have been and remain a disappointment not worthy of serious consideration. Gee, why do you keep bothering with us disappointing arrogant imbeciles? Just put me and everyone who irritates you in your killfile. We aren't worthy of your serious consideration, so why give it? You will have a more peaceful life, and the rest of us can continue along in our little playpen here, being imbecilic and amusing each other with interesting stories from real life and the technical literature. Zea x Tripsacum hybrids are NOT the same thing as pure lines in the genus Zea. The intergeneric hybrids were not commercially viable. It seems to be a fairly hot area of research, with many labs involved. Backcrosses showing apomixis have been obtained for some years. While commercially viable lines which are almost entirely Zea, but display apomixis may not yet have been obtained, I would not be surprised to read current papers with promising results considering the great advances in genetic engineering techniques of the past 10-15 years. Very few things in botany are "commercially viable", and commercial viability is hardly a qualifying measure of scientific validity. http://www.apomixis.de/APO2001_Abstract_Book.doc. "APOMICTIC MAIZE: PROBLEMS AND PERSPECTIVES Victor A. Sokolov, Irina V. Khatypova Yeah, still a hot topic in 2001. This paper is about use of standard cross amd backcross techniques, but other researchers are using modern methods of genetic engineering and genomics. Should I believe your brush off, or the evidence that hundreds of researchers around the world still regard the goal of apomixis in maize as worth pursuing? Is it stupid and credulous to believe that some of these researchers may report promising results? I hope Phred will tell us more. He may be rolling his eyes at where his offhand statement has gone, but unlike some posters, he seems to have a pretty good sense of humour, and may be enjoying Cereoid's antics, or even mine. |
Apomictic Grasses
Name ten grasses in different genera that are apomictic!!! BRBR
A quick search revealed the fact that many genera of the Poaceae contain apomictic species. These include Pennisetum, Poa, Sorghum, buffelgrass, and others I don't remember. A great deal of research is going on right now to isolate the genes for apomixis in order to develop consistent strains of superior food & forage plants. You might know that such an advanced and widespread family as the Poaceae would have a backup system in case wind pollination doesn't work. Iris, Central NY, Zone 5a, Sunset Zone 40 "If we see light at the end of the tunnel, It's the light of the oncoming train." Robert Lowell (1917-1977) |
Apomictic Grasses
I asked Phredo to answer the question, not you Iris.
I also meant actual species names not just the names of genera. You don't get even partial credit for half answers or holding little Phredo's hand. Iris Cohen wrote in message ... Name ten grasses in different genera that are apomictic!!! BRBR A quick search revealed the fact that many genera of the Poaceae contain apomictic species. These include Pennisetum, Poa, Sorghum, buffelgrass, and others I don't remember. A great deal of research is going on right now to isolate the genes for apomixis in order to develop consistent strains of superior food & forage plants. You might know that such an advanced and widespread family as the Poaceae would have a backup system in case wind pollination doesn't work. Iris, Central NY, Zone 5a, Sunset Zone 40 "If we see light at the end of the tunnel, It's the light of the oncoming train." Robert Lowell (1917-1977) |
Apomictic Grasses
I'm running back to my home newsgroup Soc.History.Medieval where manners and
mutual respect are the norm. I don't care about aponymous grasses, anyway! - - - * SLAM * "Cereoid-UR12-" wrote in message m... I asked Phredo to answer the question, not you Iris. I also meant actual species names not just the names of genera. You don't get even partial credit for half answers or holding little Phredo's hand. Iris Cohen wrote in message ... Name ten grasses in different genera that are apomictic!!! BRBR A quick search revealed the fact that many genera of the Poaceae contain apomictic species. These include Pennisetum, Poa, Sorghum, buffelgrass, and others I don't remember. A great deal of research is going on right now to isolate the genes for apomixis in order to develop consistent strains of superior food & forage plants. You might know that such an advanced and widespread family as the Poaceae would have a backup system in case wind pollination doesn't work. Iris, Central NY, Zone 5a, Sunset Zone 40 "If we see light at the end of the tunnel, It's the light of the oncoming train." Robert Lowell (1917-1977) |
Apomictic Grasses
Maybe it is time to compose a standard warning to be immediately appended to
any response that Cereoid makes to a non-regular? This would cut down on unnecessary scenes and panic. PvR Frank Martin schreef I'm running back to my home newsgroup Soc.History.Medieval where manners and mutual respect are the norm. I don't care about aponymous grasses, anyway! - - - * SLAM * |
Apomictic Grasses
Go and run away.
Don't let the door hit you where the good lord split you!!! Yeah sure, as if Medieval History is really a relevant topic of any real merit. If you don't care about the topic, why did you bring it up in the first place? Frank Martin wrote in message ... I'm running back to my home newsgroup Soc.History.Medieval where manners and mutual respect are the norm. I don't care about aponymous grasses, anyway! - - - * SLAM * |
Apomictic Grasses
In article , P van
Rijckevorsel writes Maybe it is time to compose a standard warning to be immediately appended to any response that Cereoid makes to a non-regular? This would cut down on unnecessary scenes and panic. PvR Frank Martin schreef I'm running back to my home newsgroup Soc.History.Medieval where manners and mutual respect are the norm. I don't care about aponymous grasses, anyway! - - - * SLAM * I don't think he was serious. s.h.m is notorious for ill manners and personal abuse, at least from one or two posters. -- Stewart Robert Hinsley |
Apomictic Grasses
I find it hard to tell if he was serious. I did check to see if there was
such a thing as Soc.History.Medieval (the US-spelling looks odd since there was no US in that time) and that he was a participant there. I had no idea NG's had reputations PvR Stewart Robert Hinsley schreef I don't think he was serious. s.h.m is notorious for ill manners and personal abuse, at least from one or two posters. -- Stewart Robert Hinsley P van Rijckevorsel writes Maybe it is time to compose a standard warning to be immediately appended to any response that Cereoid makes to a non-regular? This would cut down on unnecessary scenes and panic. PvR Frank Martin schreef I'm running back to my home newsgroup Soc.History.Medieval where manners and mutual respect are the norm. I don't care about aponymous grasses, anyway! - - - * SLAM * |
Apomictic Grasses
Stewart Robert Hinsley schreef
I don't think he was serious. s.h.m is notorious for ill manners and personal abuse, at least from one or two posters. -- Stewart Robert Hinsley + + + You were right: he is back. Let's hope it is a gain. PvR |
Apomictic Grasses
Stewart Robert Hinsley schreef
I don't think he was serious. s.h.m is notorious for ill manners and personal abuse, at least from one or two posters. -- Stewart Robert Hinsley + + + You were right: he is back. Let's hope it is a gain. PvR |
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