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作物学报 ›› 2008, Vol. 34 ›› Issue (08): 1330-1338.doi: 10.3724/SP.J.1006.2008.01330

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

中国豌豆地方品种SSR标记遗传多样性分析

宗绪晓1,2;关建平2;王述民2;刘庆昌1,*   

  1. 1 中国农业大学农学与生物技术学院, 北京100094; 2中国农业科学院作物科学研究所 / 国家农作物基因资源与基因改良重大科学工程, 北京100081
  • 收稿日期:2007-12-12 修回日期:1900-01-01 出版日期:2008-08-12 网络出版日期:2008-08-12
  • 通讯作者: 刘庆昌

Genetic Diversity among Chinese Pea (Pisum sativum L.) Landraces Re-vealed by SSR Markers

ZONG Xu-Xiao12,GUAN Jian-Ping2,WANG Shu-Min2,LIU Qing-Chang1*   

  1. 1 Department of Plant Genetics and Breeding, College of Agriculture and Biotechnology, China Agricultural University, Beijing 100094; 2 Institute of Crop Sciences / The National Key Facility for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2007-12-12 Revised:1900-01-01 Published:2008-08-12 Published online:2008-08-12
  • Contact: LIU Qing-Chang

摘要: 利用21对豌豆多态性SSR引物, 对来自全国春、秋播区19省区市的1 221份豌豆地方品种进行遗传多样性分析, 共扩增出104条多态性带, 每对引物平均扩增出4.95个等位变异, 其中有效等位变异占62.52%。省份间SSR等位变异分布均匀, 但是省份间有效等位变异数、Shannon’s信息指数(I)差异明显, 省籍资源群间遗传多样性差异显著。遗传多样性以内蒙古资源群最高, 甘肃、四川、云南和西藏等资源群其次, 辽宁资源群最低。PCA三维空间聚类图揭示, 我国豌豆地方品种资源分化成3个基因库, 基因库I主要由春播区的内蒙古、陕西资源构成, 基因库II主要由秋播区最北端的河南资源构成, 基因库III主要由除上述省份之外的其他省区市的资源构成。UPGMA聚类分析表明, 不同省份资源群间的遗传距离变化范围为5.159~27.586, 中国豌豆地方资源据此聚类成2个组群8个亚组群, 与3个基因库的聚类结果相呼应。聚类结果显示, 我国豌豆地方品种资源群间遗传距离与其来源地生态环境相关联。

关键词: 豌豆栽培种(Pisum sativum L.), SSR, 遗传多样性, 中国地方品种资源

Abstract: A total of 1 221 pea (Pisum sativum L.) landraces from 19 provinces in spring sowing and winter sowing areas in China were employed for SSR analysis. One hundred and four polymorphic bands were detected by using 21 SSR primer pairs. 4.95 alleles were detected by each SSR primer pair on average, of which, 62.52% were effective alleles for diversity. SSR alleles were uniformly distributed in the landraces among provinces, while the number of effective alleles and Shannon’s information index (I) varied much among provincial based groups of genetic resources. Significant difference appeared in the majority of pairwise comparisons for genetic diversity between provincial based groups of genetic resources. Inner Mongolia possessed the highest level of genetic diversity (I = 1.066), followed by Gansu (I = 1.041), Sichuan (I = 1.026), Yunnan (I = 1.017) and Tibet (I = 0.996); Liaoning was the lowest (I = 0.515) in genetic diversity. Three gene pools were detected in Chinese pea landraces, which were polarized during its adaptation and cultivation in thousands years. Gene Pool I mainly consisted of the pea landraces from Inner Mongolia and Shaanxi provinces, Gene Pool II mainly consisted of the pea landraces from Henan province, and Gene Pool III mainly consisted of the pea landraces from other provinces except Shaanxi, Inner Mongolia and Henan. Pairwise Nei78 genetic distance among provincial based groups of pea landraces ranged from 5.159 to 27.586, 2 large cluster groups and 8 cluster sub-groups were identified based on the dendrogram interacting with the three gene pools. The clustering results of Chinese land-races reveal ecologically and geographically close correlation to their genetic diversity.

Key words: Pisum sativum L., SSR, Genetic diversity, Chinese landraces

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