Re: HYB: trying to learn some genetics terminology
iris@hort.net
  • Subject: Re: HYB: trying to learn some genetics terminology
  • From: B* W* <a*@aol.com>
  • Date: Fri, 22 Feb 2013 14:21:12 -0500 (EST)
If we only planted the strongest . . . how much would that reduce the numbers? 


Betty Wilkerson
Zone 6 KY
autmirislvr@aol.com



-----Original Message-----
From: Linda Mann <lmann@lock-net.com>
To: iris <iris@hort.net>
Sent: Fri, Feb 22, 2013 12:55 pm
Subject: Re: [iris] HYB: trying to learn some genetics terminology
It's 10,000, not 1,000, and you are right. I ran across that estimate on a plant breeding methods page talking about inbreeding (F1s etc). I just closed the page, right before you posted this. It was 10,000 seedlings for the F1 cross. Fewer needed each inbred generation after that. But those numbers had to do with crop plants. Good luck trying to get 10,000 iris siblings from the same two iris parents! ;-) How many pods would that take? ;-)The article I was reading went on to estimate how many gajillion acres it would take to line breed oats (or whatever it was) for the 5 or 7 generations needed to stabilize the trait ;-) Not practical even for crop plants.I'm not reading this stuff very carefully, just looking for stuff that might be useful..not a lot so far.On 2/22/2013 1:17 PM, Betty Wilkerson wrote:> I'm beginning to think the sibling crosses are where everyone came up> with the 1,000 seedlings. I can see it taking that many to come up with> an improvement.>>> Betty Wilkerson---------------------------------------------------------------- -----To sign-off this list, send email to majordomo@hort.net with themessage text UNSUBSCRIBE IRIS 

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