圆锥小麦地方品种的农艺性状分析  

Analysis on Agronomic Traits of Tritucum turgidum L. Landraces

作　　者：李伟[1] 陈国跃[1] 魏育明[1] 郑有良[1] 

机构地区：[1]四川农业大学小麦研究所

出　　处：《麦类作物学报》2008年第4期649-654,共6页Journal of Triticeae Crops

基　　金：四川省育种攻关项目;四川农业大学科技青年创新基金项目(00130800)

摘　　要：为进一步拓宽小麦育种基因资源,对94份圆锥小麦地方品种的农艺性状进行了分析。结果表明,供试材料总体植株偏高,分蘖力强,成穗率适中,小穗密度中等,小穗数和穗粒数较多,千粒重较低,生育期较长。在株高、分蘖数、有效穗数、穗长、小穗数和穗粒数等性状上供试材料间存在极显著差异。相关分析表明,植株高度与多小穗关系密切,而千粒重更多受生育期的影响。不同地区来源的材料间农艺性状出现较大差异。主成分分析发现,6个主成分可提供91.02%的信息量,其中以小穗因子的贡献率最高(31.75%)。本研究认为,多小穗数和多穗粒数是圆锥小麦地方品种最突出的优良性状,可做为小麦育种的重要基因资源。In order to broaden the gene resources for wheat breeding, the agronomic traits of 94 turgidum landraces collected from Sichuan, Shaanxi, Gansu, Henan and other province, were investigated using analysis of variance, correlation, principal component. Higher variations in the eight agronomic traits were observed. The higher plant height, more spikelets and kernels per spike, lower 1000-grain weight and longer growing time were found to be the main characters of those landrace. The correlation analysis indicated high plant height could lead to more spikelets, and 1000-grain weight was most affected by growing periods. The results suggested that the original environment was important for the agronomic performance of landraces. Based on the principle elements analysis, six principle elements were obtained, which contributes variance over 91%, especially the spikelet type （31.75%）. In conclusion, more spikelets and kernels per spike were the most valuable traits in turgidum landraces, and could be utilized in wheat breeding.

关 键 词：圆锥小麦 地方品种 农艺性状 相关分析 主成分分析 

分 类 号：S512.19[农业科学—作物学]