墨962群体主要农艺性状的遗传特征分析

Analysis of the genetic characteristics in terms of the main agronomic traits of population Mo962

对热带玉米群体墨962主要农艺性状进行了综合分析,结果表明:墨962群体遗传基础较遗传变异丰富,抗病、抗逆性强,丰产性突出.在进行群体籽粒产量改良时,百粒重的选择意义不大,而穗粗不受其他性状选择的干扰.在墨962群体的利用方面,应注重低穗位、长穗、高出籽率的选择.

The main agronomic traits of maize tropical population Mo 962 were thoroughly analyzed. The results showed that the population was richer in genetic basis than in genetic variability, had high resistance to diseases and stress, and was high in yield. When the grain yield of the population was improved, there was little effect on selecting 100kernel weight, but selecting ear diameter was not affected by other traits. The main selection goal of the population is lower ear height, longer ear and high rate of seed yielding.