Re: REB: aphylla
iris@hort.net
  • Subject: Re: REB: aphylla
  • From: L* M* <1*@rewrite.hort.net>
  • Date: Wed, 10 Dec 2014 06:38:37 -0500
Thanks Chuck.
I had been reading about aphylla and SDBs, had a momentary short-circuit re: mismatched chromosome counts, so not as confused as I thought I was. Or was confused about something else ;-)
Also was reminded about the secondary rebloom genes while re-reading some of the previous discussions here.
I am guessing secondary rebloom genes have to do with upper and lower temperature requirements for bud set and stalk initiation, growth, and one you don't think can vary much - the inner clock for time from maturity/bud set to stalk initiation in "CA/Oz" type rebloomers.
Reading pedigrees of Zurbrigg, Byers, Betty's and other introductions, except for maybe some of the really old rebloom introductions, there seems to be quite a bit of infusion of CA/Oz type rebloom 'blood', including a few of the ones that have exclusively been reported to rebloom in zone 9 CA.
Margie's rebloom lines that primarily rebloom 6 weeks after what I assume is maturity and bud set (i.e., mature, bud set, then immediately begin stalk initiation) makes me think that the CA/OZ type genes might sometimes have a 'clock' that doesn't take 5 months. I'm not saying there wasn't selection for a 5 month clock in species origins, but why can't the genes for that 'rest' time be broken? Or aren't switched on when temperature and growth are in the rebloom goldilocks zone.
As you say, growing conditions outside the home place are unlikely to be the same, but but but... 

Linda Mann east TN zone 7

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