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玉米单交种制种产量低,种子供应不足,而且成本又高,是目前生产上存在的一个问题。为了减少测配组合的盲目性,加快高产组合的选育进程,我们对玉米单交种与其亲本自交系产量关系即自交系产量因素在杂交种中所起的作用进行了研究和探讨。试验方法与材料试验材料用1977年配制的单交种29个及其亲本自交系22个。试验采取随机排列,小区面积0.015亩,3行区,重复3次,种植密度以每亩2,500株计。收获中间行计算产量。
Corn seed production is low seed production, insufficient supply of seeds, but the cost is high, is the production of a problem. In order to reduce the blindness of the combination and to speed up the breeding process of high yielding combinations, we studied the relationship between the yield of maize monocotyledon and its parental inbred lines, that is, the role of inbred lines in hybrids. TEST METHODS AND MATERIALS Twenty-nine single-crosses and 22 parental inbred lines were used as test materials in 1977. The experiments were randomly arranged. The area of the plot was 0.015 mu and the area of 3 rows was repeated 3 times. The planting density was 2,500 plants per mu. Harvest the middle row to calculate the output.