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#16
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Are apple and peach genetically related (and how)?
"P van Rijckevorsel" schrieb
Technically the hard stuff is part of the fruit, and the actual seed is inside the hard stuff Iris Cohen schreef Remember, this is a layman who did not know how to do a Google search to get that far. Iris, + + + I did keep that in mind. Do note that this is someone who happily throws about terms such as "chromosome" and "gene". A little knowledge is a dangerous thing. I still feel it is wisest to aim at accuracy (without going into boring detail)even when using a word such as "seed". Who knows what your innocuous remark might have led too ... PvR Claudio Jolowicz schreef I am not a person who throws about terms without knowing what they mean. Although I am not a biologist, I have tried to understand some concepts of genetics. It enabled me to understand the last paragraph in Steward Robert Hinsley's post. Still I wouldn't throw about the terms he used, without rereading their exact definitions. + + + All the more reason for a little care when using terms PvR |
#17
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Are apple and peach genetically related (and how)?
Beverly Erlebacher schreef
What happened to that splitter movement a little while back that was going to raise up Persica, Armeniaca and other genera in a desperate effort to make sense out of this very diverse yet closely interrelated lot of stone fruits? + + + They seem to be lying low, waiting for the molecular storms to abate. IIRC the molecular stuff does recognize grouping within Prunus s.l. but they do not conform exactly with earlier splits. Cerasus appears to belong together with Laurocerasus and one other "old" genus (I forget which). If these groups will ever be raised to the level of genus is a different matter. Splits of large genera are not popular, just think of what happened when Eucalyptus was split. PvR |
#18
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Are apple and peach genetically related (and how)?
PS: Really nitpicking, it is best not to mix Greek and Latin in one term,
so preferably it is either "monotypic" or "unispecific" ... Stewart Robert Hinsley schreef Google: 67 hits for unispecific; 8420 for monospecific. (And 9880 for monotypic.) -- Stewart Robert Hinsley Lycos: "monotypic": 15414 "monospecific": 5072 "unispecific": 40 Some cross-language hybrids are even more popular, notably "automobile". This does not mean that a little care in using language is not a good idea. pvR |
#19
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Are apple and peach genetically related (and how)?
That is unless the plants are apomictic (as in dandelions, for example)!
Sean Houtman wrote in message ... From: (Beverly Erlebacher) As another unnatural effect of domestication, some apple cultivars are triploid, and produce nonfunctional pollen. I've occasionally wondered whether there are triploids with nonfunctional ova, but good pollen, but we never hear about them because nobody wants an apple tree that doesn't produce apples, no matter how good the pollen is. Come to think of it, people do seem to want fruitless fruit trees as ornamentals. Maybe there'd be big bucks in a fruitless ornamental crabapple. No squashed rotten crabs tracked into the house, or people slipping on them and suing you. More often when plants have triploids, the result is no seeds in the fruit. Examples are seedless grapes and seedless bananas. Sean -- Visit my photolog page; http://members.aol.com/grommit383/myhomepage Last updated 08-04-02 with 15 pictures of the Aztec Ruins. Address mungled. To email, please spite my face. |
#20
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Are apple and peach genetically related (and how)?
In article , Beverly
Erlebacher writes I'd guess that peach and almond are most closely related of the domesticated species, based on the similarity of that thing which surrounds the seed which we were just told is not part of it, no matter what it looks like. Also, peach and almond have been crossed to introduce more cold-hardiness into the almond. (And, as you say, peach is in the subfamily Amygdaloideae ;-)) I was skimming through Bean yesterday, and according to them you're right, or near enough so. Peach and almond are both placed in subgenus Amygdalus, but there's some support for splitting the peach off as subgenus Persica. I don't think any of the other almonds and peaches are domesticated, but Prunus tenella, at least, is grown as an ornamental. -- Stewart Robert Hinsley |
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