摘要
为给水稻杂交制种提供技术依据,对不育系H22A和Ⅱ-32A的制种特性进行了比较研究。结果表明:H22A播种至抽穗始期为105d左右,比Ⅱ-32A长4d;主茎总叶片数与Ⅱ-32A相当;株高78.0cm,比Ⅱ-32A高16.4cm;穗型大,每穗总粒数为185.5粒,比Ⅱ-32A多60粒;对"九二〇"反应的敏感性比Ⅱ-32A略强;开花习性和花期均优于Ⅱ-32A,但柱头外露率略低于Ⅱ-32A。
The characteristics of H22A, an new CMS Line, and Ⅱ-32A（CK）, a elite sterile line in seed production were studied to provide a technical base for hybrid seed production. The results showed that the duration from sowing to heading of H22A was about 105 days, four days more than Ⅱ-32A. Total number of main stem leaves was as much as the CK. Plant height of H22A was 78.0 cm, 16.4 cm higher than Ⅱ-32A, total number of spikelet per panicle was 185. 5, 60 spikelets more than Ⅱ-32A, and its sensitivity to gibberellin ＂920＂ was stronger than Ⅱ-32A. Its flowering habits was better than CK. But the stigma exsertion rate of H22A was slightly lower than Ⅱ-32A
出处
《贵州农业科学》
CAS
北大核心
2012年第7期13-14,共2页
Guizhou Agricultural Sciences
基金
贵州省农业动植物育种专项"水稻优质不育系的分子标记辅助选择及其应用"[黔农育专字(2008)030]
贵州省农业科学院专项"水稻优质
抗稻瘟病分子标记辅助选择育种研究"[黔农科院院专项(2010)004]
贵州省科技攻关项目"水稻中直链淀粉含量不育系的MAS选育及利用"[黔科合NY字(2010)3002]
贵州省科技厅2011年创新能力建设项目"贵州省水稻育种
栽培与产业化创新能力建设"[黔科合院所创能合(2011)4003]
贵州山区水稻科研基础条件建设项目[黔科条中补地(2011)4005]
贵州省优秀科技教育人才省长专项"水稻耐冷性及品质性状基因(QTL)的分子定位与利用"[黔省专合字(2006)85]
