Plant Breeding Nomenclature

[Susan McCouch]

Hi Sabu,

I see that Dr. Junjian Ni has already replied to your question.  I 
would like to add one thing:  the term S1 is used for outcrossing 
species where you have to artificially create a self.  The first 
generation of selfing in an outcrossing species is called an S1, but 
the same generation in a naturally inbreeding species is called an 
F2.  Thus, S1 is equivalent to F2 in terms of the generation, but we 
rarely use the S designation in rice, and the F designation is rarely 
used in something like maize.

I hope that helps.

Regards, Susan McCouch


>Hi!
>
>I just wonder which nomenclature is correct for the first backcross 
>progenies, BC1 or BC1F1. Also when one selfed the backcross progeny 
>like BC1 x BC1, then the resultant ones would be BC1F1 or BC1S1?
>
>Thanks
>Sabu
>
>
>KK Sabu PhD
>Post Doctoral Fellow
>Plant Genetics and Biotechnology
>School of Environmental and Natural Resource Sciences
>Faculty of Science and Technology
>National University of Malaysia
>43600 Bangi, Selangor
>Tel: 603-89215870, Fax: 603-89253357
>kksabu at yahoo.com


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Susan McCouch
Dept of Plant Breeding
418 Bradfield Hall
Cornell University
Ithaca, NY  14853-1901
Phone: 607-255-0420
Fax: 607-255-6683
E-Mail: srm4 at cornell.edu

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