摘要
为揭示割手密种质资源的遗传多样性,对野外采集的43份材料的株高、叶长、叶宽、茎径、节数等15个重要农艺性状进行检测和分析。结果表明,参试材料在这15个性状上都表现出较大的遗传变异,变异系数在9.87%~206.37%之间。主成分分析显示7个主成分对变异的累计贡献率达86.66%,可作材料选择的重要依据。聚类分析将参试材料分为3类,其遗传关系与地理来源没有必然联系。
In order to analyze the genetic diversity of Chinese Saccharum spontaneum L., the study assessed the genetic diversity of the 43 Saccharum spontaneum L. Fifteen agronomic traits including number of internodes, height of plant, diameter of stalk, length of leaf and width of leaf etc. were evaluated. The results showed that high diversity was detected on all of the traits with coefficients variance varying from 9.87% to 206.37%. Principle component analysis showed that the first 7 main components made the contribution of 86.66% to variation,which offered the basis for the resources selection of breeding. All the materials could be divided into three main groups depending on the results of clustering analysis, and the genetic distance of accessioned Saccharum spontaneum L. had certain connections with its ~eo^raDhical distribution, but not inevitable connections.
出处
《热带作物学报》
CSCD
北大核心
2015年第2期229-236,共8页
Chinese Journal of Tropical Crops
基金
农业部物种资源保护“热带牧草种质资源保存”项目
农业部热带作物种质资源保护项目(No.12RZZY-09)
农业部现代农业人才支撑计划项目“热带牧草创新与利用”
中南美洲种质资源收集与合作研究(No.2011DFB31690)
热带牧草种质资源保护(热带牧草种质圃维护)
农业部“948”重点项目“重要热带作物特异种质资源的引进”
关键词
割手密
遗传多样性
主成分分析
相关性分析
Saccharum spontaneum L.
Genetic diversity
Principal component analysis
Correlation analysis
