Re: Re: HYB: rebloom breeding
iris@hort.net
  • Subject: Re: Re: HYB: rebloom breeding
  • From: L* M* <1*@rewrite.hort.net>
  • Date: Mon, 01 Dec 2014 17:15:29 -0500
Thanks for wading through this yet again, Chuck.

hmm.. if it's an epigenetic change, why can't it persist?
I guess that gets back to what you were talking about earlier, keeping a plant indoors over the winter to see if it would keep blooming without having to be reset by winter vernalization.
So with some of these mixtures of CA style (I apologize, but the term 'preferential' just wont' stick in my brain for these) and weather/stress tolerant selected seedlings that rebloom in August, seems like they should be capable of the same kind of epigenetic change, & would keep reblooming. Not 5 months after Mar, but 5 months after April/May here. every year? some years? The question being whether or not that epigenetic change can carry over the winter from one year to the next?
The 5 months plus or minus a week or two needed to reach maturity sounds a bit arbitrary (ignoring your sarcasm about gigantically tall irises). Hard for me to imagine that is true for all TBs - short, tall, rapid increasers etc. It would be interesting to know what the actual distribution is. If it can be as short as 4 months, that could result in bloom starting in September, which is about as early as would be desirable here - too hot and dry earlier. 

Linda Mann

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