【摘要】 在春播和夏播两种环境条件下,对普通玉米自交系与爆裂玉米自交系杂交组配的259个F3家系的膨爆特性及其与穗粒性状的相关分析结果表明:F3家系膨爆特性较差,采用常规系谱法从中选育出优良爆裂玉米自交系的几率较小;膨爆特性都是由多基因控制的数量性状;膨爆特性间呈极显著正相关,膨爆特性与穗粒性状间多呈显著或极显著负相关;膨化体积对膨化倍数的直接正向作用最大,百粒重的直接负向作用最大,爆花率通过膨化体积对膨化倍数的间接作用为最大正效应,穗粒重通过百粒重对膨化倍数的间接作用为最大负效应。更多还原

【Abstract】 The popping characteristics of 259 F3 lines derived from a normal corn×popcorn cross were analyzed in two environments.The results showed that all popping characters of F3 lines were very low,and there were only very few lines with better popping characters than the popcorn inbred.So,it was very difficult to obtained elite popcorn inbreds through normal pedigree selection method;Popping characteristics were quantitative in nature,controlled by many genes with small effects;There were significant or highly significant positive correlations among popping characters,but negative correlations between popping characters and ear-kernel characters;Popping volume had the biggest positive direct effect on expansion fold,100-kernel weight the biggest negative direct effect,popping rate the biggest indirect positive effect through popping volume,and ear-kernel weight indirect negative effect through 100-kernel weight.更多还原