水稻三系不育系黔79A的开花习性研究  

Study on Flowering Habits of CMS Line Rice Qian 79A

作　　者：龙武华 李祖军 宫彦龙 徐海峰 朱速松[1,2] LONG Wuhua;LI Zujun;GONG Yanlong;XU Haifeng;ZHU Susong(Rice Research Institute,Guizhou Academy of Agricultural Sciences,Guiyang Guizhou 550006;Ministry of Agriculture and Rural Affairs Key laboratory of Crop Genetic Resources and Germplasm Innovation in Karst Region,Guiyang Guizhou 550006)

机构地区：[1]贵州省农业科学院水稻研究所,贵州贵阳550006 [2]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

出　　处：《现代农业科技》2024年第5期8-10,共3页Modern Agricultural Science and Technology

基　　金：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)。

摘　　要：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.

关 键 词：杂交水稻 三系不育系 黔79A 开花习性 

分 类 号：S511[农业科学—作物学]