920 wassprayed continuous 2 times after initial heading in II You 8220 seed production,and 3 times in Xie You 8220 seed production, and PTGMS line Peiai64S wassprayed from 3-5% panicle heading, continuous 3 times.4.
Ⅱ优8220制种，在始穗后连续两次喷施，协优8220制种，喷施3次，光温敏不育系培矮64s以见穗3-5％开始喷施，连续喷施3次为好。
参考来源 - 分子标记杂交水稻种子生产的技术研究The distance of opened glume tips and the opening angle of spikelet of Hua893S wasthe largest, 4.91mm and 34.43°, respectively, while Pei'ai64S was the smallest.
4．颖间距和张颖角度最大的不育系是华893S，分别为4.91mm和34.43°，培矮64S最小。
参考来源 - 5个籼型光温敏核不育系的主要特性及配合力研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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