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| Genetic diversity and population structure analysis of Capsicum germplasm accessions |
GU Xiao-zhen1*, CAO Ya-cong1*, ZHANG Zheng-hai1, ZHANG Bao-xi1, ZHAO Hong1, ZHANG Xiao-min1, WANG Hai-ping1, 2, LI Xi-xiang1, 2, WANG Li-hao1
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1 The Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Ministry of Agriculture and Rural Affairs/Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
2 National Mid-term Genebank for Vegetables, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China |
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Abstract Genetic diversity plays an essential role in plant breeding and utilization. Pepper is an important vegetable and spice crop worldwide. The genetic diversity of 1 904 accessions of pepper conserved at the National Mid-term Genebank for Vegetables, Beijing, China was analyzed based on 29 simple sequence repeat (SSR) markers, which were evenly distributed over 12 pepper chromosomes. The pepper accessions were divided into two groups in a genetic structure analysis, and the two groups showed obvious differences in fruit type and geographical distribution. We finally selected 248 accessions capturing 75.6% of the SSR alleles as the core collection for further research. Insights into the genetic structure of pepper provide the basis for population-level gene mining and genetic improvement.
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Received: 06 July 2018
Accepted:
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Fund:
GU Xiao-zhen, E-mail: 913688646@qq.com; CAO Ya-cong, E-mail: caoyacong@caas.cn; * These authors contributed equally to this work. |
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Corresponding Authors:
Correspondence WANG Li-hao, E-mail: wanglihao@caas.cn; LI Xi-xiang, E-mail: lixixiang@caas.cn
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Cite this article:
GU Xiao-zhen, CAO Ya-cong, ZHANG Zheng-hai, ZHANG Bao-xi, ZHAO Hong, ZHANG Xiao-min, WANG Hai-ping, LI Xi-xiang, WANG Li-hao.
2019.
Genetic diversity and population structure analysis of Capsicum germplasm accessions. Journal of Integrative Agriculture, 18(6): 1312-1320.
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