Reciprocal translocation identified in Vigna angularis dominates the wild population in East Japan
文献类型: 外文期刊
第一作者: Wang, Lixia
作者: Wang, Lixia;Cheng, Xuzhen;Kikuchi, Shinji;Muto, Chiaki;Naito, Ken;Isemura, Takehisa;Kaga, Akito;Tomooka, Norihiko;Ishimoto, Masao
作者机构:
关键词: Azuki bean;Linkage analysis;Cytogenetics;Reciprocal translocation;Wild population
期刊名称:JOURNAL OF PLANT RESEARCH ( 影响因子:2.629; 五年影响因子:2.926 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Using an F-2 population derived from cultivated and wild azuki bean, we previously detected a reciprocal translocation and a seed size QTL near the translocation site. To test the hypothesis that the translocation in the cultivated variety contributed to the larger seed size, we performed further linkage analyses with several cross combinations between cultivated and wild azuki beans. In addition, we visually confirmed the translocation by cytogenetic approach using 25 wild and cultivated accessions. As a result, we found the translocation-type chromosomes in none of the cultivated accessions, but in a number of the wild accessions. Interestingly, all the wild accessions with the translocation were originally collected from East Japan, while all the accessions with normal chromosomes were from West Japan or the Sea of Japan-side region. Such biased geographical distribution could be explained by the glacial refugium hypothesis, and supported narrowing down the domestication origin of cultivated azuki bean.
分类号: Q94
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