对21个食用向日葵杂交种(组合)的主要农艺性状进行变异分析及产量的相关分析、主成分分析。结果表明，参试21个食用向日葵杂交种(组合)的主要农艺性状的变异系数为 1%～27%，其中株高相关性状变幅较大，单株产量、叶片数次之，生育期、籽粒长、籽粒宽、百粒重、花盘径等相关性状较小。其主要农艺性状与单株产量的相关性由大到小依次为籽仁率、籽粒长、百粒重、茎秆粗、花盘直径、叶片数、籽粒宽 、 株高 、生育期；主要农艺性状与小区产量的相关性由大到小依次为单株产量、叶片数 、花盘直径 、籽粒宽、株高 、籽仁率、生育期 、百粒重 、茎秆粗、籽粒长。通过主成分分析明确，影响食用向日葵杂交种小区产量的主要性状为“株形因子”、“籽粒因子”。

The variation analysis, correlation analysis and principal component analysis were carried out for each agronomic character of 21 confectionery sunflower hybrids (combinations). The results showed that the variation coefficients of agronomic traits of 21 edible sunflower hybrids (combinations) were 1%～27%, among which the variation range of plant height related traits was relatively large, followed by the yield per plant and leaf number, while the correlation traits such as growth period, grain length, grain width, 100-grain weight and flower disk diameter were relatively small. The correlation between the main agronomic traits and the yield of the single plant from large to small was in order: Seed kernel rate， grain length， 100-grain weight， stem diameter， disk diameter， leaf number， grain width， plant height ， growth period. The correlations of the main agronomic traits with the yield of the plot from large to small were in order: single plant yield ， leaf number， disc diameter ， grain width, plant height， kernel rate, growth period， 100-grain weight， stem diameter， grain length. The principal component analysis showed that the main characters affecting the yield of confectionery sunflower hybrids were plant shape factor and grain factor.

S565.5

国家向日葵现代产业技术体系项目(CARS-16)；甘肃省农业科学院农业科技创新专项(2013GAA37)。