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Population structure analysis and association mapping of seed antioxidant content in USDA cowpea (Vigna unguiculata L. Walp.) core collection using SNPs

文献类型： 外文期刊

作者： Qin, Jun 1 ; Shi, Ainong 1 ; Xiong, Haizheng 1 ; Mou, Beiquan 3 ; Motes, Dennis 4 ; Lu, Weiguo 1 ; Miller, J. Creighto 1 ;

作者机构： 1.Univ Arkansas, Dept Hort, Fayetteville, AR 72701 USA

2.Hebei Acad Agr & Forestry Sci, North China Key Lab Biol & Genet Improvement Soyb, Natl Soybean Improvement Ctr,Minist Agr, Shijiazhuang Subctr,Cereal & Oil Crop Inst, Shijiazhuang 050031, Peoples R China

3.ARS, Crop Improvement & Protect Res Unit, USDA, 1636 E Alisal St, Salinas, CA 93905 USA

4.Univ Arkansas, Vegetable Res Ctr, Alma, AR 72921 USA

5.Texas A&M Univ, Dept Hort Sci, College Stn, TX 77843 USA

6.Minist Agr & Anim Resources, BP 621, Kigali, Rwanda

关键词： cowpea;Vigna unguiculata;seed antioxidant content;seed colour;single nucleotide polymorphism (SNP);association analysis

期刊名称：CANADIAN JOURNAL OF PLANT SCIENCE （ 影响因子：1.018； 五年影响因子：1.242 ）

ISSN： 0008-4220

年卷期： 2016 年 96 卷 6 期

页码：

收录情况： SCI

摘要： Cowpea (Vigna unguiculata L. Walp.) is an important legume, and the antioxidant content in cowpea seeds has been recognized as a health-promoting compound for humans. The objectives of this study were to analyze the population structure of cowpea collections and to identify single nucleotide polymorphism (SNP) markers associated with the seed antioxidant content and seed coat colour. A set of 1047 SNPs were used to analyze a 369 cowpea core collection from 47 countries. Results indicated that: (1) there were three clusters in the 369 entries; and the germplasm collected from India, South Africa, and the US showed broader genetic diversity; (2) Scaffold7139_14363 and Scaffold29110_4657 were strongly associated with antioxidant content, and C35063613_1497, Scaffold81493_886, and Scaffold84620_6785 were strongly associated with seed coat colour across three models; (3) significant correlations were detected between the seed antioxidant content and black seed colour (r = 0.45) and between seed antioxidant content and red seed coat colour (r = 0.50); and (4) Scaffold42008_191 and C35082838_2258 were associated with both seed antioxidant content and seed coat colour. The SNP markers identified could potentially be used in marker-assisted breeding to accelerate genetic improvement of cowpea for higher seed antioxidant content.

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[1]Association mapping of aphid resistance in USDA cowpea (Vigna unguiculata L. Walp.) core collection using SNPs. Qin, Jun,Shi, Ainong,Bhattarai, Gehendra,Yang, Wei,Weng, Yuejin,Qin, Jun,Mou, Beiquan,Motes, Dennis.

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