Genetic diversity of the azuki bean (Vigna angularis (Willd.) Ohwi & Ohashi) gene pool as assessed by SSR markers
文献类型： 外文期刊
第一作者： Tomooka, N.
作者： Tomooka, N.;Kaga, A.;Isemura, T.;Vaughan, D. A.;Xu, H. X.;Jing, T.
作者机构：
关键词： Asian Vigna;domestication;evolution;genetic resources;mungbean
期刊名称：GENOME （ 影响因子：2.166； 五年影响因子：2.474 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： To facilitate the wider use of genetic resources including newly collected cultivated and wild azuki bean germplasm, the genetic diversity of the azuki bean complex, based on 13 simple sequence repeat (SSR) primers, was evaluated and a core collection was developed using 616 accessions originating from 8 Asian countries. Wild germplasm from Japan was highly diverse and represented much of the allelic variation found in cultivated germplasm. The SSR results together with recent archaeobotanical evidence support the view that Japan is one center of domestication of azuki bean, at least for the northeast Asian azuki bean. Cultivated azuki beans from China, Korea, and Japan were the most diverse and were genetically distinct from each other, suggesting a long and relatively isolated history of cultivation in each country. Cultivated azuki beans from eastern Nepal and Bhutan were similar to each other and quite distinct from others. For two primers, most eastern Nepalese and Bhutanese cultivated accessions had null alleles. In addition, wild accessions from the Yangtze River region of China and the Himalayan region had a null allele for one or the other of these primers. Whether the distinct diversity of azuki bean in the Himalayan region is due to introgression or separate domestication events requires further study. In contrast, western Nepalese azuki beans showed an SSR profile similar to that of Chinese azuki beans. The genetic distinctness of cultivated azuki beans from Vietnam has been revealed for the first time. The specific alleles indicate that Vietnamese azuki beans have been cultivated in isolation from Chinese azuki beans for a long time. Wild germplasm from the Himalayan region showed the highest level of variation. Based on the results, Himalayan germplasm could be considered a novel gene source for azuki bean breeding. A comparison with mungbean SSR analysis revealed that the mean gene diversity of cultivated azuki bean (0.74) was much higher than that of cultivated mungbean (0.41). The reduction in gene diversity due to domestication, the domestication bottleneck, in azuki bean is not strong compared with that in mungbean.
分类号： Q3
- 相关文献
作者其他论文 更多>>
-
Overexpression of Loquat Dehydrin Gene EjDHN1 Promotes Cold Tolerance in Transgenic Tobacco
作者：Xu, H. X.;Li, X. Y.;Chen, J. W.;Xu, H. X.;Xu, C. J.
关键词：Eriobotrya japonica; EjDHN1; cold stress; oxidative stress; transgenic; tobacco
-
Movement and transformation of potassium in fertiliser micro-sites in latosol
作者：He, Y. D.;Wang, L. X.;Liu, Y. X.;Jing, T.;Wang, B. Z.;He, Y. D.;Wang, L. X.;Liu, Y. X.;Jing, T.;Wang, B. Z.;Cui, X. B.
关键词：
-
Impacts of Bt Rice Expressing Cry1C or Cry2A Protein on the Performance of Nontarget Leafhopper, Nephotettix cincticeps (Hemiptera: Cicadellidae), Under Laboratory and Field Conditions
作者：Wang, W.;Hu, C.;Ye, G. Y.;Lu, Z. B.;Wang, W.;Hu, C.;Ye, G. Y.;Tian, J. C.;Xu, H. X.;Guo, Y. Y.;Peng, Y. F.
关键词：Bt rice;Cry1C;Cry2A;Nephotettix cincticeps;nontarget herbivore
-
Rapid identification of red-flesh loquat cultivars using EST-SSR markers based on manual cultivar identification diagram strategy
作者：Li, X. Y.;Xu, H. X.;Chen, J. W.
关键词：Loquat;EST-SSR;Marker;Polymorphic;Manual cultivar identification diagram
-
Effect of phosphorus deficiency on the photosynthetic characteristics of rice plants
作者：Xu, H. X.;Weng, X. Y.;Yang, Y.
关键词：oryza sativa;photosynthetic characteristics;phosphorus deficiency;chlorophyll fluorescence;photoprotective mechanism
-
Genetic diversity of the rice bean (Vigna umbellata) genepool as assessed by SSR markers
作者：Tian, J.;Isemura, T.;Kaga, A.;Vaughan, D. A.;Tomooka, N.
关键词：rice bean;Vigna umbellata;SSR;genetic diversity;domestication
