Genetic diversity and population structure of Gossypium arboreum L. collected in China

Journal of Cotton Research

Baoyin PANG¹  Xiaoli GENG¹  Liru WANG¹  Yinhua JIA¹  Zhaoe PAN¹  Shoupu HE¹  Xiongming DU¹  Wenfang GONG¹ 

[1] Institute of Cotton Research of Chinese Academy of Agricultural Sciences, State Key Laboratory of Cotton Biology, Key Laboratory of Biology and Genetic Improvement of Cotton, Ministry of Agriculture, Anyang, China

关键词: Gossypium arboreum L.;    Population structure;    Genetic diversity;    Genetic differentiation;    Simple sequence repeat (SSR) markers;   

DOI  :  10.1186/s42397-018-0011-0

学科分类：农业科学（综合）

来源: Springer

【 摘 要 】

Gossypium arboreum is a diploid species cultivated in the Old World. It possesses favorable characters that are valuable for developing superior cotton cultivars. A set of 197 Gossypium arboreum accessions were genotyped using 80 genome-wide SSR markers to establish patterns of the genetic diversity and population structure. These accessions were collected from three major G. arboreum growing areas in China. A total of 255 alleles across 80 markers were identified in the genetic diversity analysis. Three subgroups were found using the population structure analysis, corresponding to the Yangtze River Valley, North China, and Southwest China zones of G.arboreum growing areas in China. Average genetic distance and Polymorphic information content value of G. arboreum population were 0.34 and 0.47, respectively, indicating high genetic diversity in the G. arboreum germplasm pool. The Phylogenetic analysis results concurred with the subgroups identified by Structure analysis with a few exceptions. Variations among and within three groups were observed to be 13.61% and 86.39%, respectively. The information regarding genetic diversity and population structure from this study is useful for genetic and genomic analysis and systematic utilization of economically important traits in G. arboreum.

【 授权许可】

CC BY