超甜玉米生长势性状杂种优势分析

对6个超甜玉米自交系组配的15个杂交组合的生长势指数进行了杂种优势表现、配合力估算和分析。结果表明:15个杂交组合均表现出显著的平均优势和超亲优势,组合间优势大小也存在明显差异。亲本间一般配合力和特殊配合力效应表现出明显差异,效应值较高的亲本是T-24、T-13、T-17。选择一般配合力和特殊配合力都好的自交系作为亲本是产生强优杂交组合的关键。

The Heterosis of Growth Potential in Super Sweet Corn

Fifteen cross combinations are obtained to six inbred lines of super sweet corn,whose heterosis and combining ability to growth potential index are estimated and analysed.The result indicated that the growth potential index of all combination appeared to have remarkable mean heterosis and greater heterosis than that of the parents.The remarkable difference of heterosis had also existed in the combinations.Effect estimation of general and special combining ability appeared obviously difference in parents.The greater effect estimation in parents were T-24?T-13?T-17.The greater effect estimations in inbred lines must be selected as parents can produce the combinations of great heterosis.