| Abstract Detail
Breeding and Genetics De Jong, Walter [1], Cheng, Shuping [2]. Mapping genes involved in tuber russeting. MANY US and Canadian breeding programs seek to incorporate russet tuber skin in their potato varieties. In the early 1980s independent studies by H. De Jong with diploids (Potato Research (1981) 24:309-313) and J. Pavek with tetraploids suggested that russeting required the complementary action of three independently segregating dominant genes denoted A, B, and C. Russeted diploid clone 07248-02 has previously been assigned the genotype AA Bb Cc, while smooth skinned clone 320-02 has been assigned genotype aa bb cc. We recently crossed 07248-02 with 320-02 to generate a population of 206 progeny that segregate for presence and degree of russeting, and are currently applying AFLP and SSR markers to these progeny in order to map the genes involved. Preliminary analyses of over 300 polymorphic markers suggests that two loci, possibly corresponding to B and C, significantly influence russet phenotype in this family. One gene is located on chromosome 4 near SSR marker STM3016, and the other on chromosome 11 near SSR marker STI046.
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1 - Cornell University, Plant Breeding and Genetics, 309 Bradfield Hall, Ithaca, NY, 14853, USA
2 - Cornell University, Plant Breeding and Genetics, 315 Bradfield Hall, Ithaca, NY, 14853, USA
Keywords:
russet
potato tuber skin.
Session: PAA07a-2
Location: Hall of Ideas Room G/Monona Terrace
Date: Monday, July 24th, 2006
Time: 1:45 PM
Abstract ID:252 |
