Re: HYB: growth problems
- Subject: [iris-photos] Re: HYB: growth problems
- From: Linda Mann firstname.lastname@example.org
- Date: Mon, 23 Oct 2006 09:47:36 -0400
I think that all makes sense.
Another thought - research on cloning/tissue culture demonstrates
usually minor genetic changes with each generation. Each rhizome is a
'clone' of the mother rhizome, so has the <potential> to be somewhat
different from the mother.
Chimeras are a conspicuous demonstration of a genetic change in part of
the plant. Sometimes those genetic changes are stable (i.e.,
permanent). Is there any reason to believe such changes would only
affect flower color? If some changes make the offspring a little better
adapted to some awful climate/growing conditions than others, then
repeated efforts to import a better adapted version of the same 'clone'
might yield success.
A few years ago, I ran across some research that shows that, once
triggered, some mechanisms for plant defenses against insects/disease
are permanent in some species (so once it's there, it would/could (?)
also be there in all the increases), but reversible in others.
Which is why I try to get starts of 'susceptible' cultivars from
climates/growing conditions as close to as bad as my own when possible.
Except for borer exposure!
<....will these rhizomes then only be able to perform only as well as
it's current mother's health permits (no matter what great conditions
now exist around them) and therefore not able to live up to it's full
DNA potential?? Yet at the same time - due to their "new found
location" either become once again healthy/well or possibly continue to
slowly die because the illness has overpowered those particular rhizomes?
Another question - - If an injury is serious enough can it cause a
slight difference in the DNA?>
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.korrnet.org/etis>
American Iris Society web site <http://www.irises.org>
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