HYB: REB: good form plus vigor plus rebloom discussion from Facebook
iris@hort.net
  • Subject: HYB: REB: good form plus vigor plus rebloom discussion from Facebook
  • From: L* M* <l*@lock-net.com>
  • Date: Tue, 02 Jul 2013 12:34:50 -0400
Betty W asked on Facebook
<about iris plants--I've noticed that the strongest plants seem to have the ugliest blooms. (less modern of form) Is this true? Is there limited plant ability? If it gives good plants habits, it doesn't have the ability to give good blooms? Linda Mann, is this what you are thinking about rebloomers?>
No, I think it's possible, just very very low probabilities for me at this point in my breeding program. The more inbred all the traits are, the higher the probability to get them all combined. This is what Chuck was talking about when he was asking me all the questions about getting plant health/vigor in seedlings involving parents from "incompatible" climates.
So what I'm thinking is that if I had a population of seedlings that when interbred would always (say, more than 80% of seedlings) produce rebloomers that had the rebloom traits I wanted, plus a population that when interbred <always> gave the form, colors and vigor I wanted, then crossing and back crossing would give quite a few rebloomers with the form and vigor (leave recessive colors & patterns out for now).
I have or am very close to having the population of seedlings that will usually give good form when interbred, but have no population of rebloomers that when crossed with each other will reliably give rebloom. & other people's rebloomers don't reliably rebloom for me either, so.... :-( & since hot weather rebloom seems to be recessive, it may take awhile to get seedlings that have that trait and are able to express it under my growing conditions. For all I know, I have a crateload of seedlings that can rebloom in hot weather, but just can't do it here. Not likely, but unknown. 

Linda Mann east TN USA zone 7b

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