HYB: another terminology question
iris@hort.net
  • Subject: HYB: another terminology question
  • From: &* W* <i*@telp.com>
  • Date: Fri, 22 Feb 2013 08:05:27 -0700
While we're at it, I'm interested in how people understand the term 
"sibling". I've seen it sometimes apparently restricted to two irises that 
came from the same pod of seed, or at least the product of the cross of two 
plants made by the same hybridizer in the same year. It seems to me that 
since the two parents are clones, any irises with the same parentage are 
siblings, even if the crosses that produced them were made many years or 
miles apart by different people. My own brother and sisters, for example, 
are no less my brother and sisters for having been gestated separately at 
different times. ;)


   

Tom Waters   


Telperion Oasis ~ www.telp.com/irises    


Cuyamungue, New Mexico, USA (zone 6)  

----------------------------------------
From: "Tom Waters" <irises@telp.com>
Sent: Friday, February 22, 2013 7:22 AM
To: iris@hort.net
Subject: re: [iris] HYB: trying to learn some genetics terminology 

Yes, as Chuck has said F2 refers only to the result of crossing F1 
individuals from the same initial cross. I don't believe there is any 
special terminology for the cross of two seedlings of related but not 
identical parentage.

Tom Waters   

Telperion Oasis ~ www.telp.com/irises    

Cuyamungue, New Mexico, USA (zone 6)  

----------------------------------------
From: "Linda Mann" 
Sent: Thursday, February 21, 2013 7:16 PM
To: iris@hort.net
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

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