Intraspecific and interspecific variation in Setaria revealed by RAPD analysis
文献类型: 外文期刊
第一作者: Li, Y
作者: Li, Y;Jia, JZ;Wang, Y;Wu, SZ
作者机构:
关键词: foxtail millet;genetic variation;RAPD markers;Setaria ssp.
期刊名称:GENETIC RESOURCES AND CROP EVOLUTION ( 影响因子:1.524; 五年影响因子:1.713 )
ISSN: 0925-9864
年卷期: 1998 年 45 卷 3 期
页码:
收录情况: SCI
摘要: Random amplified polymorphic DNA (RAPD) analysis was applied to foxtail millet (Setaria italica) and other Setaria species in order to assess the degree of polymorphism among and within the species and to investigate their genetic relationships. Twenty accessions of foxtail millet, five of green foxtail (S, viridis), five of yellow foxtail (S. glauca), one each of S. germanica, S. verticilliformis, S. pallidifusca, S. macrostachya, S, sphacelata and S. faberi, and one unidentified, were evaluated for variability using a set of 19 random 10-mer primers. A total of 148 markers were scored for all the accessions. Wide variations in banding profiles among species were observed with nearly every primer used. The results showed that foxtail millet and S. glauca had a considerable degree of variation. The geographic differentiation of RAPD patterns in foxtail millet accessions examined seemed to exist. The present study confirmed that foxtail millet is more closely related to green foxtail than to other species in Setaria, providing support for the origin of foxtail miller from S. viridis and the conspecificity of these two species. The results confirmed that S. germanica and S, italica are conspecific and the former can be replaced by the latter. Setaria glauca and S. sphacelata are distinct from foxtail millet, implying that elite traits found in these two species are relatively difficult to be used in foxtail millet improvement. This study demonstrates that RAPD analysis can be used in assessing intraspecific and interspecific variation in foxtail millet and its wild relatives.
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