草莓主要经济性状与单株产量的相关和通径分析

Analyses of Correlation and Path between Main Economic Characters and Single-plant Yield of Strawberry(Fragaria ananassa)

采用相关和通径分析法,对7个草莓品种的单株产量及主要经济性状进行统计分析。结果表明,产量构成因素的变异系数大小为:结果数>二级序果数>单株产量>二级序果重>平均果重>一级序果数>果实横径>果实纵径>一级序果重>叶柄粗>硬度;相关分析表明,10个相关性状对单株产量影响的顺序:果实横径>二级序果重>叶柄粗>果实纵径>结果数>一级序果重>二级序果数>平均果重>硬度>一级序果数;在相关分析的基础上,做了偏相关分析和通径分析,偏相关分析与通径分析的结果基本上是一致的,其排序为:果实横径>平均果重>一级序果数>硬度>结果数。通径分析还表明,果实横径和硬度是影响单株产量的主要因素。

The correlation and path between the main economic characters and single-plant yield of 7 strawberry（ Fragaria ananassa Duchesne）varieties were analyzed. The results showed that the coefficient of variation of yield components had the follow-ing order：number of fruits﹥number of secondary fruits﹥single-plant yield﹥weight of secondary fruits﹥average fruit weight﹥number of primary fruits﹥fruit transversal diameter﹥fruit vertical diameter﹥weight of primary fruits﹥petiole diameter﹥firmness. The correlation analysis revealed that the effects of 10 characters on single-plant yield had the following sequence：fruit transversal diameter﹥weight of secondary fruits﹥petiole diameter﹥fruit vertical diameter﹥number of fruits﹥weight of primary fruits﹥number of secondary fruits﹥average fruit weight﹥firmness﹥number of primary fruits. The partial correlation analysis and path analysis consistently showed that the effect magnitude of main economic characters on single-plant yield could be arranged as follows：fruit transversal diameter﹥average fruit weight﹥number of primary fruits﹥firmness﹥number of fruits. The path analysis also indicated that fruit transversal diameter and firmness were the main factors affecting the yield per plant.