Re: Re: HYB: REB: Genetics of rebloom (was orange)
iris@hort.net
  • Subject: Re: Re: HYB: REB: Genetics of rebloom (was orange)
  • From: B* W* <a*@aol.com>
  • Date: Sat, 12 Mar 2011 09:43:47 -0500 (EST)
LOL!  Don't think we can breed anything that will bloom in June & August but
not in July!  The "summer" rebloomers that I see here CAN bloom in July but
usually don't.  In a cool July, it is greatly enjoyed.  When they bloom in a
HOT July, the bloom seems to "fry" and turn brown with interrupted growth and
bloom.  2025-02Re (purple) did this last summer and then it had about 6 stalks
later in the fall.


<<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,
f growing season is long enough and temperatures suitable?>>




Betty W.
Zone 6--Southern KY.






-----Original Message-----
From: Linda Mann <lmann@lock-net.com>
To: iris <iris@hort.net>
Sent: Sat, Mar 12, 2011 8:07 am
Subject: [iris] Re: HYB: REB: Genetics of rebloom (was orange)


I'm a little confused by this, Chuck.  I understand what you are saying
bout leaf count, vigor etc, but this (combined with your earlier posts)
ounds as if you are saying there are two different sets of genetics
ontrolling rebloom (summer & cycle, the former recessive, the latter
ominant), but the expression of rebloom (phenotype) is the same?
So there could be June & August (usually too hot in July here for the
ines of irises that thrive in my growing conditions) bloom from either,
f growing season is long enough and temperatures suitable?  So in a
ery mild winter, followed by warm spring, and cool summer, the cycles
ould also bloom in summer?  So change in daylength isn't a factor in
ycle rebloom?
If that's what you are saying, I don't believe it.  But that's just my
ut reaction, no data.
I can see that would apply to "CA" rebloomers, & if that's also
ominant, that's definitely something I'd enjoy having here.  Some lines
ot as sensitive to heat inhibiting bloom as some of the really healthy
rowers here.
Or is that what you are thinking re: cycle rebloomers, that they are
ctually the same as CA, but with different temperature limitations?
ore tolerant to heat, less to erratic cold.
Thought provoking ;-)
<By selecting  the most vigourous growers and ones with lowest mature leaf
ount, you move  bloom time forward.
The weather conditions that set flower buds is the same for summer
ebloom and
all 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
ets in, you will get  early fall cylcic rebloom.  Same with summer
ebloomers.>
Linda Mann east TN USA zone 7
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