自育水稻三系不育系黔209A的开花习性  

Study on Flowering Habit of Qian 209A,a Rice Three-line Sterile Line Bred by Guizhou Rice Institute

作　　者：龙江辉 向关伦[1] 甘雨[1] 杨占烈[1] 王际凤[1] 黄宗洪[1] 郝留根 郭慧[1] 蔡源 

机构地区：[1]贵州省农业科学院水稻研究所,贵州贵阳550006 [2]修文县农业局,贵州贵阳550200

出　　处：《贵州农业科学》2017年第10期9-11,共3页Guizhou Agricultural Sciences

基　　金：国家重点研发计划项目(2016YFD0101100);贵州省农业动植物育种专项"高产杂交水稻协优385试验示范"[黔农育专字(2013)012];贵州省农业动植物育种专项"杂交水稻新品种湘菲优785的试验示范"[黔农专字(2014)002];贵州省农业科学院科技成果培育与人才培养项目"自育杂交水稻组合不育系原种繁殖技术研究"[黔农科院CR(2014)58];贵州省农业科学院自主创新科研专项[黔农科院自主创新科研专项(2014)019]

摘　　要：为掌握自育三系不育系黔209A的异交特性,以利于其繁、制种,对其开花习性进行初步研究。结果表明:在贵阳自然生态条件下,黔209A群体开花历时10~12d,单穗开花期约8d,开花后约第4天进入盛花期;开花时间为8:30-15:30,开花高峰期出现在11:30-12:30;午前开花率为80.43%,柱头外露率为82.3%,是一个开花习性优良、农艺性状较好的不育系。The flowering habit of Qian 209 A,a rice three-line sterile line bred by Guizhou Rice Institute,is preliminarily studied to know well the out-crossing characteristics of Qian 209 A for its reproduction and seed production by experiment of net room.Results:The flowering duration of Qian209 Apopulation is 10~12 d.The flowering duration of single spike is 8 d.The fourth day after first flowering is at the full-flowering stage.The flowering time and peak flowering time is at 8:30~15:30 and11:30~12:30 respectively.The flowering rate before noon and stigma exsertion rate is 80.43% and 82.3% separately.Qian 209 A with good flowering habit and better agronomic trait should be used in production of hybrid rice.

关 键 词：杂交水稻 黔209A 开花习性 

分 类 号：S511[农业科学—作物学]