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: Sun, 13 Mar 2011 06:49:13 -0500
Thanks for the clarification, Chuck, and for the update on what you are thinking about how this all works.
I know you didn't mention CA bloomers, but as I was typing, that's where the logic took me. 

<I didn't mention  the California rebloomers.>
Luckily several of us trying to do just that, making crosses in adverse climates with selections from OZ & CA. So there should be lots more data eventually. 

<I'm beginning to suspect that  we could  bring rebloom from Ca rebloomers
earlier into season by selection.  But not likely able to increase plant
hardiness unless these are trialed and selected in more adverse climates.>
Can you say a little more about your thinking? Do you think these two genes are the same and maybe interact with other growth genes that differ (i.e., temperature thresholds, clock time to maturity etc) or ... 

<The  summer rebloomers and Whenever rebloomers seem to be a recessive gene
combined with at least one dominant gene.>
IMMORTALITY is a puzzle as far as passing on rebloom here. & judging from how few registered offspring it has, I suspect it's a puzzle for others as well, given that it seems to be "the" rebloomer that reblooms just about everywhere on the planet. I haven't really tried to use it for that much yet, but really did expect to see more than just one rebloom seedling from it X MATRIX, since both are summers here. The cross wasn't all that strong, & last year was maiden, so maybe this year will yield a clue or two.
Not sure how IMM behaves elsewhere, but here it gets carried away producing increases rather than blooming. Low stalk to fan ratio, which it passes on in about half the crosses. Usually the ones happiest in my growing conditions. It's a "fault", but I wonder if it is somehow related to IMM's ability to bloom so often here. I'm still amazed that one clump of it bloomed last August during heat and drought. 

Linda Mann east TN USA zone 7

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