摘要
对产自我国内蒙古、新疆等不同分布区的21份老芒麦种质资源的8个形态性状进行数量统计分析的结果表明:8个形态性状在材料间均表现显著差异,老芒麦种质资源遗传变异丰富;Shannon-weaver指数分析显示,21份材料在8个性状上具有丰富的遗传多样性(H′=1.7416);基于形态性状的聚类分析把21份材料聚为4类;通过多变量的主成分分析,前3个主成分代表了老芒麦形态多样性的73.52%,叶舌长度、叶长、小穗长及小花数等性状是造成老芒麦表型差异的主要因素。
Eight morphological characteristics of 21 Elymus sibiricus L. germplasm resources from Inner Mongolia, Xinjiang and other different distribution areas were studied by statistical analysis. The results showed that the genetic diversity of 21 accessions was abundant, variation occurred remarkably in eight morphological characters. Shannon-weaver index analysis of variation in eight characteristics of 21 Elymus sibiricus accessions showed that there was an abundant genetic diversity （H1= 1. 7416）. 21 Elyrnus sibiricu L. accessions were clustered into 4 groups based on the morphological data. Principal component analysis showed that first, second and third principal component totally represented 73.52% of morphological diversity. Ligule length, leaf length, ear length and flowerlets per spikelet were mainly factors which produced morphological variation of Elymus sibiricus L.
出处
《中国草地学报》
CSCD
北大核心
2015年第3期111-115,共5页
Chinese Journal of Grassland
基金
中国农业科学院科技创新工程(草原研究所2015-01)
中央级公益性科研院所基本科研业务费"种子老化对老芒麦种质遗传完整性的影响"(1610332014020)
"十二五"农村领域国家科技计划课题"淀粉类(小麦野生材料)种质遗传完整性新技术研究及监测"(2013BAD01B0105)
关键词
老芒麦
种质资源
形态变异
主成分分析
聚类分析
Elymus sibiricus
Germplasm resources
Morphological variation
Principal component analysis
Cluster analysis
