北方农业学报 ›› 2022, Vol. 50 ›› Issue (1): 11-17.doi: 10.12190/j.issn.2096-1197.2022.01.02

• 分子生物学・种质资源 • 上一篇    下一篇

基于SSR分子标记的早熟棉种质资源遗传多样性分析

咸丰1, 路战远1, 张建中1, 陈立宇1, 程玉臣1, 杨建强2, 张向前1, 苏和2   

  1. 1.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031;
    2.阿拉善盟农业技术推广中心,内蒙古 巴彦浩特 750306
  • 收稿日期:2021-07-09 出版日期:2022-02-20 发布日期:2022-04-11
  • 作者简介:咸 丰(1974—),男,研究员,博士,主要从事作物遗传育种研究工作。
  • 基金资助:
    国家重点研发计划项目(2017YFD0101601); 内蒙古农牧业创新基金项目(2021CXJJN03); 国家棉花产业技术体系(CARS-15-33)

Genetic diversity analysis of early maturing cotton germplasm resources base on SSR molecular markers

XIAN Feng1, LU Zhanyuan1, ZHANG Jianzhong1, CHEN Liyu1, CHENG Yuchen1, YANG Jianqiang2, ZHANG Xiangqian1, Suhe2   

  1. 1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. Alagxa League Agricultural Technology Promotion Center,Bayanhot 750306,China
  • Received:2021-07-09 Online:2022-02-20 Published:2022-04-11

摘要: 【目的】明确内蒙古自治区农牧业科学院棉花研究中心早熟棉种质资源的亲缘关系,为杂交组合的选配及定向育种提供亲本材料。【方法】采用SSR分子标记(微卫星DNA),利用31对SSR引物对44份早熟棉种质资源的遗传多样性进行分析鉴定。【结果】31对引物共扩增出多态性条带72条,平均每对引物扩增出2.25条。聚类分析结果显示,各材料间的遗传相似系数为0.35~0.80,平均为0.58。其中,酒棉17号与中716的遗传相似系数最小,为0.35;新陆早41号与中361、中夏05与辽棉15号的遗传相似系数最大,均为0.80。【结论】31对SSR引物在供试材料间的多态性较好,44份早熟棉材料遗传变异类型丰富,初步揭示了早熟棉种质资源间的遗传背景差异及亲缘关系。

关键词: 早熟棉, 种质资源, 遗传多样性, SSR分子标记

Abstract: 【Objective】 To clarify the genetic relationship of the early maturing cotton germplasm resources in the Cotton Research Center of the Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,in order to provide parental materials for hybrid combination selection and directional breeding.【Methods】 Using SSR molecular markers(microsatellite DNA),31 pairs of SSR primers were used to investigate and identify the genetic diversity of 44 early maturing cotton germplasm resources.【Results】 31 pairs of primers amplified a total of 72 polymorphic bands,with an average of 2.25 bands per pair of primers. The genetic similarity coefficient among the materials ranged from 0.35 to 0.80,with an average of 0.58,according to the results of cluster analysis. The genetic similarity coefficient between Jiumian No.17 and Zhong 716 was the lowest,at 0.35. The highest genetic similarity coefficient were 0.80 for Xinluzao No.41 and Zhong 361,Zhongxia 05 and Liaomian No.15.【Conclusion】The 31 pairs of SSR primers were effective in amplifying the polymorphisms among the materials studied,and the genetic diversity types of 44 early maturing cotton materials were abundant,revealed the genetic background differences and genetic relationship among early maturing cotton germplasm resources.

Key words: Early maturing cotton, Germplasm resources, Genetic diversity, SSR molecular markers

中图分类号: 

  • S562