Genome Wide SSR High Density Genetic Map Construction from an Interspecific Cross of Gossypium hirsutum X Gossypium tomentosum
文献类型: 外文期刊
第一作者: Muhammad K.R.Khan;;Haodong Chen
作者: Muhammad K.R.Khan;Haodong Chen;Zhongli Zhou;Muhammad K.Ilyas;Xingxing Wang;Xiaoyan Cai;Chunying Wang;Fang Liu;Kunbo Wang
作者机构:
关键词: genetic map;interspecific cross;Gossypium tomentosum;wild cotton;SSR primer pairs
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.753; 五年影响因子:6.612 )
ISSN: 1664-462X
年卷期: 2016 年 7 卷
页码:
收录情况: SCI
摘要: A high density genetic map was constructed using F-2 population derived from an interspecific cross of G. hirsutum X G. tomentosum. The map consisted of 3093 marker loci distributed across all the 26 chromosomes and covered 4365.3 cM of cotton genome with an average inter-marker distance of 1.48 cM. The maximum length of chromosome was 218.38 cM and the minimum was 122.09 cM with an average length of 167.90 cM. A sub-genome covers more genetic distance (2189.01 cM) with an average inter loci distance of 1.53 cM than D sub-genome which covers a length of 2176.29 cM with an average distance of 1.43 cM. There were 716 distorted loci in the map accounting for 23.14% and most distorted loci were distributed on D sub-genome (25.06%), which were more than on A sub-genome (21.23%). In our map 49 segregation hotspots (SDR) were distributed across the genome with more on D sub-genome as compared to A genome. Two post-polyploidization reciprocal translocations of A2/A3 and A4/A5 were suggested by seven pairs of duplicate loci. The map constructed through these studies is one of the three densest genetic maps in cotton however; this is the first dense genome wide SSR interspecific genetic map between G. hirsutum and G. tomentosum.
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