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#1
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Source of hard seeds
Hi folks, I teach an introductory plant science course to college
freshmen, and one of the labs that they do is various forms of scarification of hard seeds (hot water, acid, physical abrasion, etc.). We've always used Albizia julibrissin, with excellent success. But this year, the seed weevils have destroyed nearly all the Albizia seeds on the local trees -- good, perhaps, from the standpoint of slowing it as an invasive weed, but also harmful to my lab. So I'm in search of another source -- a different species would be fine -- of seeds that I could purchase. Are any of you aware of a USA commercial source of some fairly large-seeded hard seed species in lots of around a pound or two? Thanks. Malcolm Manners Florida Southern College |
#2
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Source of hard seeds
On Sep 27, 8:42 am, Buddy why.wood.yew@bother wrote:
here's Malcolm Manners's last post -: Hi folks, I teach an introductory plant science course to college freshmen, and one of the labs that they do is various forms of scarification of hard seeds (hot water, acid, physical abrasion, etc.). We've always used Albizia julibrissin, with excellent success. But this year, the seed weevils have destroyed nearly all the Albizia seeds on the local trees -- good, perhaps, from the standpoint of slowing it as an invasive weed, but also harmful to my lab. So I'm in search of another source -- a different species would be fine -- of seeds that I could purchase. Are any of you aware of a USA commercial source of some fairly large-seeded hard seed species in lots of around a pound or two? Thanks. Malcolm Manners Florida Southern College I understand that Lupinus (lupines) are hard seeds that sometimes require scarification. They grow wild in New England and perhaps they were serve your needs. Western lupines need fire to germinate. |
#3
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Fire smoke and heat for seed germination [Was: Source of hard seeds]
In article .com, Ferd Farkel wrote:
On Sep 27, 8:42 am, Buddy why.wood.yew@bother wrote: here's Malcolm Manners's last post -: Hi folks, I teach an introductory plant science course to college freshmen, and one of the labs that they do is various forms of scarification of hard seeds (hot water, acid, physical abrasion, etc.). We've always used Albizia julibrissin, with excellent success. But this year, the seed weevils have destroyed nearly all the Albizia seeds on the local trees -- good, perhaps, from the standpoint of slowing it as an invasive weed, but also harmful to my lab. So I'm in search of another source -- a different species would be fine -- of seeds that I could purchase. Are any of you aware of a USA commercial source of some fairly large-seeded hard seed species in lots of around a pound or two? I understand that Lupinus (lupines) are hard seeds that sometimes require scarification. They grow wild in New England and perhaps they were serve your needs. Western lupines need fire to germinate. Do they *need* fire, or just heat? On the other hand, maybe it's just the smoke. Many Australian native species were said to "need fire" to germinate, and they certainly come up thickly following a bush fire; but research in fairly recent years has shown that it's the chemicals in the smoke rather than fire _per se_ that stimulate germination. For small scale propagation people are now using smoked water with good effect. http://www.cpbr.gov.au/PROPGATE/latest.htm For detail on effects on species (not all species respond well) and methods of application: http://asgap.org.au/APOL2/jun96-6.html There's plenty more stuff out there (just google "smoke seed germination site:.au" [without the quotes] for example) but if you prefer hard copy, seek out of one the seminal papers, such as: Dixon K.W, Roche S and Pate J.S (1995). The promotive effect of smoke derived from burnt native vegetation on seed germination of Western Australian plants. _Oecologia_ 101: 185-192 Cheers, Phred. -- LID |
#4
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Fire smoke and heat for seed germination [Was: Source of hard seeds]
On Sep 30, 11:03 am, (Phred) wrote:
In article .com, Ferd Farkel wrote: On Sep 27, 8:42 am, Buddy why.wood.yew@bother wrote: here's Malcolm Manners's last post -: Hi folks, I teach an introductory plant science course to college freshmen, and one of the labs that they do is various forms of scarification of hard seeds (hot water, acid, physical abrasion, etc.). We've always used Albizia julibrissin, with excellent success. But this year, the seed weevils have destroyed nearly all the Albizia seeds on the local trees -- good, perhaps, from the standpoint of slowing it as an invasive weed, but also harmful to my lab. So I'm in search of another source -- a different species would be fine -- of seeds that I could purchase. Are any of you aware of a USA commercial source of some fairly large-seeded hard seed species in lots of around a pound or two? I understand that Lupinus (lupines) are hard seeds that sometimes require scarification. They grow wild in New England and perhaps they were serve your needs. Western lupines need fire to germinate. Do they *need* fire, or just heat? On the other hand, maybe it's just the smoke. They need the fire or some other agent to split their hulls. Home gardeners use a nail file. Many Australian native species were said to "need fire" to germinate, and they certainly come up thickly following a bush fire; but research in fairly recent years has shown that it's the chemicals in the smoke rather than fire _per se_ that stimulate germination. For small scale propagation people are now using smoked water with good effect. http://www.cpbr.gov.au/PROPGATE/latest.htm I knew bongwater was good for something. For detail on effects on species (not all species respond well) and methods of application: http://asgap.org.au/APOL2/jun96-6.html There's plenty more stuff out there (just google "smoke seed germination site:.au" [without the quotes] for example) but if you prefer hard copy, seek out of one the seminal papers, such as: Dixon K.W, Roche S and Pate J.S (1995). The promotive effect of smoke derived from burnt native vegetation on seed germination of Western Australian plants. _Oecologia_ 101: 185-192 Cheers, Phred. -- Interesting. |
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