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雄性不育系的繁殖是水稻杂种优势利用的一个重要环节。搞好不育系繁殖首先必须认真做好隔离,严格除杂除劣,切实保证纯度,另方面还须采取措施以提高产量。前者是质量问题,关系到杂种群体的整齐度和优势表现,后者是数量问题,影响到制种面积的大小,也即杂种水稻种植面积的发展速度。今年早造我们对不育系大田繁殖作了一些初步观察,不育系和保持系同时播种,同时移栽,行比1:1,株行距6×6,单株植。抽穗前后父母本均割除剑叶,盛花期每天人工辅助授粉一次。因赶晚造制种季节,不育系种子边熟边收,产量以广陆银(不)最高,种0.3亩,实
Male sterile line breeding is an important part of rice heterosis utilization. To do a good job in breeding male sterile lines must first be conscientiously segregated, strictly remove impurities, effectively ensure purity, the other must take measures to increase production. The former is a quality problem, which is related to the uniformity and superiority of the hybrid population. The latter is a quantitative issue that affects the size of the seed production area, that is, the growth rate of hybrid rice acreage. Earlier this year, we made some preliminary observations on the sterile field and field propagation. The sterile and maintainer lines were sown at the same time. At the same time, the transplanting ratio of 1: 1 was 6 × 6. Before and after heading parents were cut off the flag leaf, full flowering artificial daily pollination once. Due to the late rush to create seed season, sterile lines edge cooked, the output to the highest land silver (not) the highest species of 0.3 acres, the real