提高亲本自交系的纯度 发挥玉米杂交种的增产效果

• 机 构: 资中县农业局,
• 出 处: 四川农业科技
• 发表日期: 1974年03期
• 关键词: 亲本自交系 增产效果 制种质量 保纯 去杂去劣 配合力测定 生物学混杂 双交 隔离条件 机械混杂

几年来我们在推广玉米杂交种的实践中,深刻的体会到,杂交亲本纯度的高低和繁殖制种质量的好坏,直接影响到玉米杂交的增产效果。用质量较高的亲本自交系配制出的玉米杂交种,表现整齐,健壮、增产显著;亲本不纯,配制的玉米杂交种,整齐度差,增产幅度下降,甚至有的减产,而且也给繁殖制种带来不少麻烦。因此,注意保持玉米自交亲本纯度,是推广玉米杂交种工作中必须认真解决的一个重要问题。

Over the past few years we promote the practice of corn hybrids, a profound understanding of the level of hybrid parents purity and reproductive quality of seed production directly affects the yield of maize hybrids. Maize hybrids formulated with high quality inbred lines of inbred lines showed neat and robust performance with significant yield increase. Maize hybrids with poor parents, poor uniformity, decreased yield and even reduced yield were also given Breeding seed produce a lot of trouble. Therefore, paying attention to maintaining the purity of maize selfed parents is an important issue that must be seriously solved in popularizing maize hybrids.