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研究小麦杂种子一代抽穗期及主要经济性状的表现规律,对杂交组合的亲本选配和杂种优势利用的选种实践中都具有极其重要的意义。自一九七四年以来,结合常规育种工作,我们在这方面进行了研究。结果如下: 试验材料和方法各年均采用人工去雄授粉而得的种子,于秋季按正常播种期播种,行长均为1米,行距0.8尺,每行播20粒。粒距5公分,单粒点播。亲本品种分段集中种植,成熟后全部拔回进行室内考种。其中七四年共考察38个组合,七五年13个组合,七六年45个组合,七
Studying the law of heading date and main economic traits of wheat hybrid seed generation is very important for the selection of parental and heterosis utilization of hybrid combinations. We have conducted research in this area since 1974 in conjunction with conventional breeding. The results are as follows: Materials and Methods The artificial seeds of the male sterile pollination were used in each year. The seeds were sown in the normal seeding period in autumn. The length of the seeds was 1 meter and the row spacing was 0.8 feet. 5 cm grain distance, single-particle on demand. The parental varieties are concentrated and planted in sections, all of them are taken back for indoor test after maturity. Among them, a total of 38 combinations were inspected in 1974, 13 combinations in 1975, 45 combinations in 1976, and seven