论文部分内容阅读
对9771S异交特性研究表明:9771S见穗后第2天即开花,但在见穗后第7天才进入盛花期;其抽穗盛期出现在见穗后的第5～9天;从日开花动态来看9771S花时集中,日开花高峰为10:00—12:00,午前花率为71.9%;颖花张开角度为28.54°,张颖历期达95.9 min,柱头活力持续时间为4 d,比对照陆18S短1 d;柱头外露率高,包颈率低;对“九二○”反应较钝感,在刚破口时喷施450～525 g/hm2可以取得良好的解除包颈效果。9771S具有较高的异交结实潜力,在制种上根据亲本特性采取相应的技术措施可以获得高产。
The results of 9771S outcrossing showed that 9771S bloomed on the second day after ear emergence but only reached the full flowering stage on the 7th day after ear emergence. The earliest days of heading appeared on the 5th to 9th day after ear emergence. 9771S take the time to focus on the peak flowering day 10: 00-12: 00, the rate of flowering was 71.9% antecedent; spangle opening angle of 28.54 °, Zhang Ying period of 95.9 min, stigma activity duration of 4 d, than the Control land 18S short 1 d; stigma exserted rate is high, the package neck rate is low; on the “920” reaction is more insensitive to just break the mouth spray 450 ~ 525 g / hm2 can get a good lifting neck effect. 9771S has high potential for outcrossing and fruiting, and high yield can be obtained by adopting corresponding technical measures on seed production according to the characteristics of parents.