杀雄剂SQ-1诱导谷子雄性不育研究  

Male Sterility Induced by Chemical Hybridizing Agent SQ-1 in Setaria italica Beauv.

作　　者：宋瑜龙[1] 王亮明[1] 张改生[1] 盛英[1] 李亚鑫[1] 牛娜[1] 赵卓军[1] 

机构地区：[1]西北农林科技大学/陕西省作物杂种优势研究与利用重点实验室/小麦育种教育部工程研究中心,陕西杨凌712100

出　　处：《作物学报》2011年第9期1695-1700,共6页Acta Agronomica Sinica

基　　金：国家自然科学基金项目(31071477);高等学校博士学科点专项科研基金项目(20090204110024);陕西省"13115"科技创新工程重大科技专项(2010ZDKG-68)资助

摘　　要：选取3个不同的谷子品种,以杀雄剂SQ-1为雄性不育诱导剂,采用3种不同杀雄剂浓度,在3个不同发育时期对谷子喷施处理,以喷水为对照。杀雄剂SQ-1在适宜喷施剂量与时期下,供试品种五九爪软谷和香谷能被诱导产生95%～100%的雄性不育率,对黄金谷杀雄效果尚未达到90%。五九爪软谷和香谷的喷药适宜时期分别为七叶期和八叶期,喷施剂量同为4～5kghm-2,以5kghm-2的杀雄效果最佳。To explore a new way for utilizing heterosis in Setaria italica Beauv., three foxtail millet varieties, namely Wujiuzhuaruangu, Xianggu and Huangjingu, were used in this study. In three different developmental stages, we sprayed plant with three different concentrations of Chemical Hybridizing Agent SQ-1, and control plant with water. Results showed that male sterility rates in Wujiuzhuaruangu and Xianggu reached 95% to 100% under the proper spraying concentration at the specific develop- mental stage, and that in Huangjingu was lower than 90%. At seven-leaf in Wujiuzhuaruangu and at eight-leaf in Xianggu were the best developmental stages for spraying, two varieties had the same optimal spraying concentrations for the highest rate of male sterility, which was 5 kg ha^-1. In conclusion, the specific genotypes of foxtail millet at the suitable developmental stage can be induced 95-100% male sterility by spraying SQ-1 at an optimum dosage, which provides a theoretical basis of heterosis and new technical support for using CHA SQ-1 to produce foxtail millet hybrid.

关 键 词：谷子 SQ-1杀雄剂 生理型雄性不育 

分 类 号：S515[农业科学—作物学]