春性小麦品种主要农艺性状与产量的相关及通径分析

The Correlation and Diameter Analysis no the Main Agronomic Characters and Output of the Vernal Wheat

对2004—2005年国家小麦品种展示的8个弱春性品种的主要农艺性状进行相关和通径分析,结果表明:农艺性状与产量的相关程度依次为:单位面积穗数(0.8034)、每穗粒数(0.5492)、千粒重(-0.4146)、株高(0.3366)、穗长(0.0639)和每穗小穗数(0.1824),对产量的直接影响重要性依次为:千粒重(1.5139)、每穗粒数(1.0816)、单位面积穗数(1.0254)、株高(0.4358)、每穗小穗数(0.2968)和穗长(-0.0274),表明了农艺性状间具有明显的制约关系。提出了河南春性小麦高产育种的策略和高产栽培技术。

The correlation and the diameter analysis to the main agronomic characters of the eight weak vernal wheat varieties which were demonstrated on the 2004-2005 national wheat variety exhibition was done, and the results to indicate the agronomic characters and the output relativity are in turn： number of ear in hm^2 （0.8034）, seed number of each ear （0.5492）, weight of a thousand seeds （-0.4146）, high （0.3366）, ear of long（0.0639） and each ear of spike let number. The importance of the direct factors to the output are in turn： weight of a thousand seeds （1.5139）, each ear of number of seeds （1.0816）, ear of number in hm^2 （1.0254）, high （0.4358）, each ear of spike let number （0.2968） and ear of long （-0.0274）. It indicates that the agronomic characters have the obvious restricted relations. The strategy of the high production of the vernal wheat in Henan province and the technology of the high production cultivation are proposed.