油用型向日葵杂交种主要性状及与产量关系研究

Main Traits and Relationship with Yield in Oil-used Sunflower Hybrids

研究了国内油用型向日葵杂交种主要性状及其与产量的关系。在10个性状中,结实率、籽仁率、生育期、含油率遗传变异较小,茎粗、盘径、百粒重、株高中等,产量和叶片数变异最大。相关分析和通径分析结果表明,小区产量与株高、叶片数、籽仁率、茎粗、含油率等性状直接相关效应较大,其中株高、叶片数、茎粗对产量的直接效应最大,是影响产量的主要因子。

Main traits and relationship with yield in oilused sunflower hybrids in China were studied. Among ten traits, the CV of yield, leaves number were very big, the CV of stem diameter, disc diameter, 100kernel weight, plant height were medium, the CV of fertile percentage, kernel percentage, growth period, oil percentage were small. The result of correlated analysis and path analysis showed that the direct correlation coefficients of yield with plant height, leaves number, kernel percentage, stem diameter oil percentage etc. were big, among them the direct correlations coefficients of plant height, leaves number, stem diameter on yield were biggest, they were main factors of influencing yield.