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通过陕农7859的选育,认为关中进一步提高品种产量潜力的主攻方向应是在保证一定穗数基础上提高穗重,做到粒数粒重协调发展。亲本组合的选配,主要是选好中心亲本,多次改造提高。运用阶梯杂交,创造中间材料与加工选育相结合。杂种后代处理主张F_2多种组合,压缩组合群体,选出好组合后,扩大群体。杂种后代选择要先宽后严,提前出圃。异地加代选育,以加速育种进程。
According to the selection and breeding of Shannong 7859, it is considered that the key direction for Guanzhong to further increase the yield potential of varieties should be to increase the panicle weight on the basis of ensuring a certain panicle number and achieve the coordinated development of grain weight and grain weight. Parents of matching options, mainly selected center parent, repeatedly improved to improve. The use of ladder hybrids, to create intermediate materials and processing and breeding combined. Hybrid descendants advocate a variety of combinations F_2, compression combination of groups, select a good combination, to expand the population. Selection of hybrid descendants should be wide and strict, advance to nursery. Off-site generations of breeding, to speed up the breeding process.