甜荞农艺性状与产量关系的多重分析

为确定构成甜荞产量的主要因子，为甜荞种质评价与创新提供理论依据。以34份甜荞品种为材料，研究分析甜荞农艺性状与产量的变异特征，进行相关分析、通径分析、主成分分析及多元线性回归分析。结果表明，甜荞农艺性状和产量的变异系数达13.3%~44.0%；产量与株高、单株粒数、单株粒重呈极显著正相关，与主茎节数和分枝数呈显著正相关，而与第一节间长和千粒重呈不显著的正相关。因此得出，单株粒重、主茎节数、单株粒数、分枝数是构成产量的主要因子。

Multiple Analysis of Relationship Between Agronomic Traits and Yield in Fagopyrum esculentum

Indentify the primary indexes of Fagopyrum eseculentum yield and provide academic evidence for germplasm evaluation innovation of Fagopyrum eseculentum. 34 Fagopyrum eseculentum varieties were used to investigate the variation of agronomic traits and yield of Fagopyrum eseculentum. The correlation, path analysis, principal components analysis and multiple linear regression analysis were conducted. Results showed that, the variation coefficient of agronomic traits and yield of Fagopyrum eseculentum reached 13.3%-44.0%, and the yield had a extremely significant positive correlation with plant height, grain number per plant and grain weight per plant, and a significant positive correlation with stem section number and branch number, but no significant correlation with 1st internode length and 1000-grain weight, grain weight per plant. Stem section number, grain number per plant and branch number were primary indexes of Fagopyrum eseculentum yield.