谷子杂交种产量与主要农艺性状的相关性及回归分析

为了明确影响谷子杂交种产量的主要因子，对短穗型、中偏短穗型、中偏长穗型和长穗型4类不同谷子杂交种产量与主要农艺性状进行相关性和回归分析。结果表明，4种类型谷子杂交种的穗长与其产量差异显著。相关性分析表明，产量与出谷率之间存在显著正相关；单株穗重与单株粒重、经济系数之间存在极显著正相关，有效分蘖数与单株穗重、单株粒重和经济系数之间存在显著正相关，穗码密度与单株草重之间存在显著正相关，千粒重与穗长之间存在显著正相关。回归分析表明，谷子杂交种产量与穗粗、出谷率和千粒重呈显著正相关。

Correlation and Regression Analysis between Yield and Main Agronomic Traits in Foxtail Millet Hybrids

In order to clarify the main factors affecting millet hybrids yield, correlation and regression analysis of yield and main agronomic traits of four types foxtail millet hybrids including short panicle type, mid-to-short panicle type, mid-to-long panicle type and long panicle type were studied. The results showed that panicle length and yield were significant difference among four types of foxtail millet hybrids. Correlation analysis displayed that there was a significant positive correlation between the yield and milled millet percentage; and there were very significant positive correlations between panicle weight per plant and grain weight per plant, and the economic coefficient. There were significant positive correlations between effective tillers and panicle weight per plant, grain weight per plant and economic coefficient. There was a significant positive correlation between the panicle density and the grass weight per plant. There was a significant correlation between 1000-grain weight and panicle length. Regression analysis results showed that panicle diameter, milled millet percentage and 1000-grain weight were positively correlated with foxtail millet hybrids yield.