为了解水稻三系不育系黔 79A的特征特性,以便于其繁殖和制种,本文对黔 79A的开花习性进行了初步研究.结果表明:在贵阳生态条件下,黔 79A群体开花历时 12～14 d,单穗开花历时 6.8～8.2 d,始花后第4 天达到高峰,单日开花时间为 8:30-17:30,开花峰值在 11:30-12:30,午前开花率为 73.7%,柱头总外露率为 70.8%.由此表明,黔 79A是一个农艺性状较好、开花习性优良的水稻三系不育系.
In order to understand the characteristics of the CMS line rice Qian 79A,and to facilitate its reproduction and seed production,this paper conducted a preliminary study on the flowering habit of Qian 79A.The results showed that under the ecological conditions of Guiyang,the flowering duration of population and a single spike of Qian 79A was 12-14 days and 6.8-8.2 days,respectively.It reached the peak on the 4th day after flowering.In a single day,the flowering time was 8:30-17:30,the peak flowering time was 11:30-12:30,the flowering rate before noon was 73.7% ,and the total stigma exsertion rate was 70.8% .Therefore,Qian 79A is a CMS line rice with good agronomic traits and excellent flowering habits.
龙武华;李祖军;宫彦龙;徐海峰;朱速松
贵州省农业科学院水稻研究所,贵州贵阳 550006||农业农村部喀斯特山区作物基因资源与种质创新重点实验室,贵州贵阳 550006贵州省农业科学院水稻研究所,贵州贵阳 550006
农业科学
杂交水稻;三系不育系;黔79A;开花习性
hybrid rice;CMS line;Qian 79A;flowering habit
《现代农业科技》 2024 (005)
8-10 / 3
贵州山区特色优质稻新品种选育项目(黔科合支撑[2022]重点028);贵州特色植物种质资源利用与创新人才基地项目(RCJD2018-14);特色优质稻资源收集、保存与创制利用项目(黔农科院种质资源[2023]11号).
10.3969/j.issn.1007-5739.2024.05.003
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