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Genetic Analysis of 430 Chinese Cynodon dactylon Accessions Using Sequence-Related Amplified Polymorphism Markers

文献类型: 外文期刊

作者: Huang, Chunqiong 1 ; Liu, Guodao 1 ; Bai, Changjun 1 ; Wang, Wenqiang 1 ;

作者机构: 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Key Lab Crop Gene Resources & Germplasm Enhanceme, Minist Agr, Danzhou 571737, Peoples R China

关键词: Cynodon dactylon;genetic variation;SRAP markers

期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )

ISSN: 1422-0067

年卷期: 2014 年 15 卷 10 期

页码:

收录情况: SCI

摘要: Although Cynodon dactylon (C. dactylon) is widely distributed in China, information on its genetic diversity within the germplasm pool is limited. The objective of this study was to reveal the genetic variation and relationships of 430 C. dactylon accessions collected from 22 Chinese provinces using sequence-related amplified polymorphism (SRAP) markers. Fifteen primer pairs were used to amplify specific C. dactylon genomic sequences. A total of 481 SRAP fragments were generated, with fragment sizes ranging from 260-1800 base pairs (bp). Genetic similarity coefficients (GSC) among the 430 accessions averaged 0.72 and ranged from 0.53-0.96. Cluster analysis conducted by two methods, namely the unweighted pair-group method with arithmetic averages (UPGMA) and principle coordinate analysis (PCoA), separated the accessions into eight distinct groups. Our findings verify that Chinese C. dactylon germplasms have rich genetic diversity, which is an excellent basis for C. dactylon breeding for new cultivars.

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