小麦产量与农艺性状的相关分析和通径分析

以23个小麦品系为研究对象,采用随机区组试验,设3个重复,对不同农艺性状与产量进行相关性和通径分析,分析参试品系的农艺指标与产量的关系。结果表明,产量三要素与产量的相关系数和通径系数都为穗数>穗粒数>千粒重,穗数与产量之间呈显著正相关,穗粒数、千粒重与产量之间关系呈负相关,但相关性不显著。收获指数、生物产量与子粒产量分别呈极显著和显著正相关,所有品系都有较高的生物产量和收获指数;供试品系的产量与株高和株高构成指数呈正相关,穗长、单穗重与产量之间呈负相关,但相关性不显著。

Correlation and Path Analysis on Wheat Yield and Agronomic Indices

A total of 23 wheat lines were selected in this study,with which were identified under randomized block design with three replications in the trial. Correlation and path analysis to study the influence of main agronomic indices were used. The results showed that the correlation between yield components and yield was: spike number > kernels per spike>1000-kernel weight, spike numbers were significantly positive correlation with yield, as kernels per spike and 1000-kernel weight were negatively correlated to yield, but no significant correlation. Biological yield, harvest index, and grain yield were extremely significant positive correlation and significant positive correlation, and varieties with high yield had high biological yield and harvest index. Plant height and plant height component index were positive to grain yield,while spike length and spike weight of tested varieties were negative to grain yield, but no significant correlation.