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选用开花习性好,花时早而相对集中,颖壳张开角度大,开颖时间长,柱头外露率高,包颈轻的不育系,是杂交制种夺取高产的重要基础。若该不育系与恢复系配合力好,杂一代优势强,生育期适合,抗性强,品质较好,那么这就是一个理想的不育系。1987年秋季我们在本所试验田区同期对13个水稻雄性不育系(有的已在生产上应用,有的是近年培育成功尚未推广的)开花习性等进行了观察与调查,现将结果报导如下:所有不育系均为6月25日播种,7月17日移栽,4 X6寸单本植,一般在9月上旬先后抽穗,抽穗期间对每一不育系,选有代表性的单株,定点连续观察,每一数据重复观察三次,然后统计分析。
Selection of good flowering habits, early and relatively concentrated when the flower, husks open angle, open a long time, stigma exposed rate, neck light sterile lines, is an important basis for hybrid seed production to win high yield. If the male sterile line and restorer line with good, heterosis generation strong, suitable growth period, resistance, good quality, then this is an ideal CMS. In the autumn of 1987, we observed and investigated the flowering habits of 13 rice male sterility lines (some of which have been applied in production, some of which have not been successfully popularized in recent years) in the experimental field in our own county. The results are reported as follows: All sterile lines were sown on June 25, July 17 transplanting, 4 X6 inch single planting, usually in early September has heading, heading each of the sterile lines, selected representative of the plant , Continuous observation of fixed-point, repeated observation of each data three times, and then statistical analysis.