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根据我们的育种经验,提高玉米自交系的选育效果:①基础材料的选育要以推广种的中心自交系为基础,再加入其它血缘,并注意利用热带资源;②改良提高现行推广种的自交系,延长杂交种使用年限;③改进选系方法,集中亲本,增加种植株数,开展异地鉴定,增加选择压力。
According to our breeding experience, we should increase the breeding effect of maize inbred lines: (1) The selection of basic materials should be based on the central inbred lines of the expanded varieties, add other blood resources, and pay attention to the utilization of tropical resources; (2) Improve and enhance the current promotion Kinds of inbred lines, to extend the useful life of hybrids; ③ improve the selection method, focus on parents, increase the number of plants, to carry out identification in different places, increase the selection pressure.