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我所1983年从中国种子公司引入美国4份抗病基因玉米自交系,连续4年观察,进行抗性、生育性状和经济性状、配合力测定的试验,旨在突破育种难关,选育出高产优质、抗病虫、适应性广的玉米新品种。现将结果初报如下。 1 材料与方法 美国自交系:B37~(Ht)、B73~(Ht)、A632~(Ht),A634~(Ht)。同时以早期引入的B37、A632、A634及骨干系系14、M017作参照。 试验地为黑壤土,地力中等,地势平坦、连作玉米7～10年,(?)种,施口肥磷酸二铵10kg/mμ,追施硝铵26.5kg/mμ。试验小区顺序排列,无重复,每份材料种植5m行
In 1983, we introduced 4 inbred lines of maize disease resistance genes from Chinese seed companies and observed for 4 years in succession. The tests of resistance, fertility and economic traits and the determination of combining ability aimed to break through the difficulties of breeding and breeding High yield, high quality, pest resistance, wide adaptability of new corn varieties. Now the results reported below. 1 Materials and methods American inbred lines: B37 ~ (Ht), B73 ~ (Ht), A632 ~ (Ht), A634 ~ (Ht). At the same time, B37, A632, A634 and backbone lines 14 and M017 were introduced as early reference. Test ground black soil, medium fertility, flat terrain, even as corn 7 to 10 years, (?) Species, fertilization fertilizer diammonium phosphate 10kg / mμ, topdressing ammonium nitrate 26.5kg / mμ. Experimental plot arranged in order, no duplication, each material planting 5m line