Journal of Northern Agriculture ›› 2022, Vol. 50 ›› Issue (1): 11-17.doi: 10.12190/j.issn.2096-1197.2022.01.02

• Molecular biology・Germplasm resources • Previous Articles     Next Articles

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

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

CLC Number: 

  • S562