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 12:28:01 -0500 (EST)
So . . . the crosses Rick Ernst did with Edna's Wish & Wild Jasmine were true F2 etc.? 


Betty Wilkerson
Zone 6 KY
autmirislvr@aol.com



-----Original Message-----
From: Chuck Chapman <irischapman@aim.com>
To: iris <iris@hort.net>
Sent: Fri, Feb 22, 2013 10:55 am
Subject: Re: [iris] HYB: trying to learn some genetics terminology
F1 is original parental cross. F2 is of siblings, and only of siblings. A cross used in genetics to assess recessives. Used in plant breeding to pull out recessives.The F2 and subsequent F3 etc, are all sibling crosses. That is F3 is F2 X F2.Two parents from different lines is always a F1. Cross of cousins is also F1.Chuck Chapman-----Original Message-----From: Linda Mann <lmann@lock-net.com>To: iris <iris@hort.net>Sent: Fri, Feb 22, 2013 11:08 amSubject: Re: [iris] HYB: trying to learn some genetics terminologyThanks Chuck. After posting that, I did some more reading and have a bitmore understanding of the terminology. Best summary was on the JacksonLaboratory mouse breeding website.Is there nomenclature for offspring of F1 of one line X F1 of another?Or is that just a plain ol parental cross, with seedlings of that crosscalled F1?Same question for (a x b) x c. I'm guessing seedlings from that crossare also just an F1.I understand backcross and outcross, but are there terms to use forintertwined pedigrees? cousins crossed? nephews/nieces X aunts/uncles? Inbreeding, but is there a term for the offspring (and please don'trefer to hillbillies..;-) )?On 2/22/2013 6:59 AM, Chuck Chapman wrote:> F2 is always crossing of two F1.>> Chuck Chapman>> -----Original Message-----> From: Linda Mann <lmann@lock-net.com>> To: iris <iris@hort.net>> Sent: Thu, Feb 21, 2013 9:15 pm> Subject: [iris] HYB: trying to learn some genetics terminology>> F1 & subsequent generations.>> Online definition says F2 is > The progeny of self-pollinated F1> generation plants>> But I've also heard/read F2 used this way:>> The F2 (second filial) generation consists of the offspring from> allowing the F1 individuals to interbreed - the grandchildren of the> parental generation.>> So what do I call the offspring of two related F1 seedlings that are not> siblings, but are part of my non-line breeding program? i.e., crosses> between half sibs, cousins, etc.>> I was assuming that any 2nd generation away from the parental one was an> F2, but looks like that's not the way F2 is normally used.>> Linda Mann>> ---------------------------------------------------------------------> To sign-off this list, send email to majordomo@hort.net with the> message text UNSUBSCRIBE IRIS>> ---------------------------------------------------------------------> To sign-off this list, send email to majordomo@hort.net with the> message text UNSUBSCRIBE IRIS--------------------------------------------------------------------- To sign-off this list, send email to majordomo@hort.net with themessage text UNSUBSCRIBE IRIS--------------------------------------------------------------------- To sign-off this list, send email to majordomo@hort.net with themessage text UNSUBSCRIBE IRIS 

---------------------------------------------------------------------
To sign-off this list, send email to majordomo@hort.net with the
message text UNSUBSCRIBE IRIS
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index