西北春谷区中晚熟组谷子主要农艺性状的相关和通径分析

Correlation Analysis and Path Analysis on Major Agronomic Traits of Middle and Late Mature Group of Regional Test in Spring Millet Area of Northwest China

以2008年国家谷子品种区域试验西北春谷区中晚熟组品种的性状结果为数据材料,对西北春谷区中晚熟组谷子产量构成的主要农艺性状进行相关和通径分析。结果表明:生育期、穗粒重和单穗重是构成西北春谷区中晚熟组谷子单株产量的主要因素,其次是株高和出苗-抽穗。性状对单株产量的直接贡献顺序为单穗重>出谷率>生育期>株高>穗长>千粒重>出苗-抽穗>穗粒重。

The correlation analysis and path analysis on major agronomic traits related to yield of middle and late mature group of the national regional test in spring millet area of Northwest China in 2008 were carried out.The results showed that the growth period,grain weight per ear and single ear weight were the main factors related to yield per plant,then the plant height and emergence-heading.The direct contribution of agronomic traits to yield was in the following order：single ear weightgrain rategrowth periodplant heightear length1 000-grain weightemergence-headinggrain weight per ear.