Effect of Marker-assisted Selection on Protein Content in Wheat

doi:10.3321/j.issn:1000-7091.2007.02.010

Abstract

Abstract: Marker-assisted selection for protein content was conducted in backcross population in wheat. Experiments were designed first to confirm the linkage of molecular markers Xgwm570, E41M62-168 with protein content. Comparison with backcross population developed through phenotypic selection (PHEBC₂), by marker-assisted selection (MASBC₂) and by random mating where no selection has been applied (RNDBC₂), there was no significant difference between means of phenotypic and marker-assisted selection (16.2% ) for protein content and the percentage of plants which have protein content higher than 16.5%, but significantly higher than RNDBC₂ population. When the backcross-derived plants were divided into A (two loci), B (one locus) and C (null) according to their molecular marker types, their protein content values and the percentage of plants which have protein content higher than 16.5% ranked from high to low is type Atype Btype C. From these we could conclude that marker-assisted selection is an efficient method to breed protein content in wheat.

Key words: Wheat, Protein content, Marker-assisted selection, Quantitive trait locus

CLC Number:

S512.1+1.033

CHEN Xi-wen, CHEN De-fu, LI Yong-jun. Effect of Marker-assisted Selection on Protein Content in Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(2): 39-42. doi: 10.3321/j.issn:1000-7091.2007.02.010.

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