Mapping Genes Governing Flower and Seedcoat Color in Asparagus Bean (Vigna unguiculata ssp sesquipedalis) Based on Single Nucleotide Polymorphism and Simple Sequence Repeat Markers

作者：Xu, Pei; Hu, Tingting; Yang, Yuejian; Wu, Xiaohua; Wang, Baogen; Liu, Yonghua; Qin, Dehui; Ehlers, Jeffrey; Close, Timothy; Lu, Zhongfu; Li, Guojing^*

来源：Hortscience, 2011, 46(8): 1102-1104.

DOI：10.21273/HORTSCI.46.8.1102

• asparagus bean
• flower color
• seedcoat color
• linkage mapping
• synteny

Colors of flower and seedcoat are interesting traits of asparagus bean, a cultivated subspecies of cowpea grown throughout Asia for its tender, long green pods. Little is known about the inheritance of these traits including their genome location. We report here the genetic analysis and mapping of the genes governing flower and seedcoat color in asparagus bean based on single nucleotide polymorphism (SNP) and simple sequence repeat (SSR) markers. Analysis of the F-1 and F-7:8 generation of recombinant inbred lines (RILs) population showed a monogenetic inheritance of both traits. Purple flower and brown seedcoat are dominant over white flower and cream seedcoat, respectively. We further show that genes governing flower color and seedcoat color are tightly linked on LG8, approximate to 0.4 cM apart. Synteny analysis showed that the gene controlling seedcoat color in our study is syntenic to the soybean T locus. The use of the mapping information in asparagus bean breeding is discussed.

• 出版日期2011-8
• 单位浙江省农业科学院