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首页> 中文期刊> 《农业科学学报（英文版）》 >Genome-wide assessment of genetic diversity and fiber quality traits characterization in Gossypium hirsutum races

Genome-wide assessment of genetic diversity and fiber quality traits characterization in Gossypium hirsutum races

         
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摘要

Gossypium hirsutum races are believed to be potential reservoirs of desirable traits,which can play crucial roles to overcome the existing narrow genetic base of modern Upland cotton cultivars.However,prior to utilizing the races in cotton improvement programs,understanding their genetic constitutions is needed.Thus,this study used molecular and morphological techniques to characterize 110 G.hirsutum germplasm including 109 semi-wild accessions and one Upland cotton cultivar,CRI12.In the study,104 SSR markers detected 795 alleles,with an average of 7.64 alleles per mark.er,ranging from 3 to 14,and average polymorphism information content (PIC) value of 0.71.And 96 of the markers were found to be highly informative,with PIC value≥0.50.Pairwise genetic similarity coefficient across the accessions ranged from 0.19 to 1.00,with an average value of 0.46.Morphological characterization was done using fiber length,fiber strength,micronaire,fiber uniformity index,and fiber elongation.Pairwise taxonomic distance within the accessions ranged from 0.17 to 3.41,with a mean of 1.33.The SSR and fiber quality traits data set based unweighted pair group method of arithmetic mean (UPGMA) analysis grouped the accessions into 7 and 12 distinct clusters,respectively,that corresponds well with the results of principal component analysis (PCA).Our study revealed the existence of vast molecular and morphological diversities within the accessions and provided valuable information on each semi-wild accession for quick and better informed germplasm utilization in cotton breeding programs.

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  • 来源
    《农业科学学报（英文版）》 |2017年第11期|2402-2412|共11页
  • 作者

    Kiflom Weldu Okubazghi; WANG Kun-bo; LI Xiao-na; CAI Xiao-yan; WANG Xing-xing; CHEN Hao-dong; ZHOU Zhong-li; WANG Chun-ying; WANG Yu-hong; LIU Fang;

  • 作者单位

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    Hamelmalo Agricultural College, Keren P.O.Box 397, Eritrea;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    Cotton Sciences Research Institute of Hunan/National Hybrid Cotton Research Promotion Center, Changde 415101, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

    State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, P.R.China;

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