爆裂玉米爆花率与主要性状的相关分析

Correlation Analysis of Popping Rate with Main Agronomic Traits of Popcorn

以28个爆裂玉米杂交组合为研究对象,对爆花率与轴重、穗粗、轴粗、百粒重、秃尖长、穗重、穗长、行粒数、膨爆倍数、穗行数、脂肪含量、蛋白质含量、淀粉含量、含水量等15个农艺性状及品质性状的相关性进行测验,并将爆花率与各性状间的关系进行了通径分析。对爆花率与膨爆倍数、轴粗、百粒重、行粒数、穗粗、含水量性状进行二次多项式逐步回归分析。结果表明:各性状对爆花率而言,穗重、膨爆倍数、蛋白质含量以直接作用为主,穗粗、轴重、轴粗、行粒数、含水量、脂肪含量等以间接作用为主。提高爆花率的同时膨爆倍数也得到了提高。

Twenty-eight popcorn hybridized combinations are taken as the research objects to test the correlation between popping rate and 15 agronomic and quality traits,including caulom weight,ear thickness,caulom thickness,hundred-grain weight,barren tip length,ear weight,ear length,grains per row,expansion and popping multiple,ear-to-row number,fat content,protein content,starch content and water content.Path analysis is implemented for the relation between popping rate and agronomic traits.Quadratic polynomial stepwise regression analysis is implemented for the relation between popping rate and such traits as caulom thickness,hundred-grain weight,grains per row,ear thickness and water content.The results shows ear weight,expansion and popping multiple,and protein content can directly influence popping rate,while ear thickness,caulom thickness,grains per row,water content and fat content can indirectly influence popping rate.Therefore,popping rate and expansion multiple can be improved at the same time.