Analysis of the genetic diversity of Chinese native Cannabis sativa cultivars by using ISSR and chromosome markers
文献类型: 外文期刊
第一作者: Zhang, L. G.
作者: Zhang, L. G.;Chang, Y.;Zhang, L. G.;Guan, F. Z.;Yuan, H. M.;Yu, Y.;Zhang, X. F.;Zhao, L. J.
作者机构:
关键词: Cannabis sativa;Inter-simple sequence repeat;Genetic diversity;Chromosome
期刊名称:GENETICS AND MOLECULAR RESEARCH ( 影响因子:0.764; 五年影响因子:0.912 )
ISSN: 1676-5680
年卷期: 2014 年 13 卷 4 期
页码:
收录情况: SCI
摘要: Hemp (Cannabis sativa) is an important fiber crop, and native cultivars exist widely throughout China. In the present study, we analyzed the genetic diversity of 27 important Chinese native hemp cultivars, by using inter-simple sequence repeats (ISSR) and chromosome markers. We determined the following chromosome formulas: 2n = 20 = 14m + 6sm; 2n = 20 = 20m; 2n = 20 = 18m + 2sm; 2n = 20 = 16m + 4sm; and 2n = 20 = 12m + 8sm. The results of our ISSR analysis revealed the genetic relationships among the 27 cultivars; these relationships were analyzed by using the unweighted pair-group method based on DNA polymorphism. Our results revealed that all of the native cultivars showed considerable genetic diversity. At a genetic distance of 0.324, the 27 varieties could be classified into five categories; this grouping corresponded well with the chromosome formulas. All of the investigated hemp cultivars represent relatively primitive types; moreover, the genetic distances show a geographical distribution, with a small amount of regional hybridity.
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