Re: HYB: REB: Genetics of rebloom (was orange)
iris@hort.net
  • Subject: Re: HYB: REB: Genetics of rebloom (was orange)
  • From: L* M* <l*@lock-net.com>
  • Date: Sat, 12 Mar 2011 08:59:31 -0500
I'm a little confused by this, Chuck. I understand what you are saying about leaf count, vigor etc, but this (combined with your earlier posts) sounds as if you are saying there are two different sets of genetics controlling rebloom (summer & cycle, the former recessive, the latter dominant), but the expression of rebloom (phenotype) is the same?
So there could be June & August (usually too hot in July here for the lines of irises that thrive in my growing conditions) bloom from either, if growing season is long enough and temperatures suitable? So in a very mild winter, followed by warm spring, and cool summer, the cycles could also bloom in summer? So change in daylength isn't a factor in cycle rebloom?
If that's what you are saying, I don't believe it. But that's just my gut reaction, no data.
I can see that would apply to "CA" rebloomers, & if that's also dominant, that's definitely something I'd enjoy having here. Some lines not as sensitive to heat inhibiting bloom as some of the really healthy growers here.
Or is that what you are thinking re: cycle rebloomers, that they are actually the same as CA, but with different temperature limitations? More tolerant to heat, less to erratic cold. 

Thought provoking ;-)

<By selecting  the most vigourous growers and ones with lowest mature leaf
count, you move  bloom time forward.
The weather conditions that set flower buds is the same for summer rebloom and 
Fall cyclic.

The weather conditions that inhibit  rebloom is the same for both.

So if a plant matures fast enought to get bud set before  too warm weather
sets in, you will get  early fall cylcic rebloom.  Same with summer
rebloomers.>

Linda Mann east TN USA zone 7

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