目前,以“478”做母本的品种越来越多,所以“478”不育系的正确利用尤为重要,为此我们配备了相应的人力、物力、财力,使这项工作有了很大的起色,使“478”不育系从试验观察阶段,迈进了生产应用阶段。 1 现阶段的性状 1.1 “478”不育系的不育性可靠 经1995、1996、1997年,三年连续的观察,均未在散粉期表现可育株,具体如下: 1995年重点观察500株,去杂株及变异株2株,余下“478”株全部不育,不育率高达99.6%以上。 At present, “478” as the mother of more and more varieties, so the “478” sterile lines of the correct use is particularly important, for which we are equipped with the corresponding manpower, material and financial resources to make this work a great deal The development of “478” sterile line from the experimental observation stage, into the production and application stage. 1 Current traits 1.1 Sterility of the “478” sterile lines was reliable. After 1995, 1996, 1997 and three years of continuous observation, none of the fertile lines appeared in the powdery stage, as follows: In 1995, 500 strains were mainly observed , To hybrid and mutant strains 2, the remaining “478” strains were all sterile, infertility rate as high as 99.6%.