斯卑尔脱小麦主要农艺性状鉴定与评价  

Analysis of Agronomic Traits of Triticum spelta L. Germplasms

作　　者：侯永翠[1] 蒲至恩[1] 尚海英[1] 李伟[1] 

机构地区：[1]四川农业大学小麦研究所,四川温江611130

出　　处：《西南农业学报》2010年第2期315-321,共7页Southwest China Journal of Agricultural Sciences

摘　　要：为进一步拓宽小麦育种基因资源,对来自18个国家和地区的151份斯卑尔脱小麦的主要农艺性状进行了考察与分析。结果表明,供试材料总体植株偏高,分蘖力强,小穗数多,千粒重偏低,成穗率较高,生育期较长等特点。相关分析发现有效穗与分蘖数、成穗率,穗粒数与小穗数、千粒重、株高成正偏相关极显著,抽穗期与穗长正偏相关显著。千粒重与穗长、小穗数和穗粒重等多个性状存在复杂的相关关系。主成分分析显示5个主成分可提供85.13%的信息量,其中以粒重因子的贡献率最高(24.68%)。供试材料基于农艺性状可被聚为三类,类Ⅰ和类Ⅲ分别为矮杆晚熟型和高杆穗数型,类Ⅱ又可分为高杆晚熟型、早熟粒重型、短穗粒重型和穗数粒重型四个亚类,聚类结果与其地理来源有一定的相关性,但不完全一致。The agronomic traits of 151 spelt wheat accessions collected from 18 countries and areas,were investigated based on the correlation,principal component and cluster analysis. Higher variations of the agronomic traits were observed. The spelt wheat investigated in this study had the beneficial traits of more tillers and spikelet per spike, and disadvantage of higher plant height, lower 1000-grains weight and longer growing periods. The correlation analysis indicated that the spike number per plant limited the production of spelt wheat. Based on principle elements analysis ,five principle elements were obtained ,which contributes the variance over 85 %. By clustering analysis, all accessions were divided into three groups ,and the genetic distances based on agronomic traits were associated with their geographic distribution.

关 键 词：斯卑尔脱小麦 农艺性状 相关分析 主成分分析 

分 类 号：S512.1[农业科学—作物学]