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Acta Agron Sin ›› 2011, Vol. 37 ›› Issue (09): 1695-1700.doi: 10.3724/SP.J.1006.2011.01695

• RESEARCH NOTES • Previous Articles     Next Articles

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

SONG Yu-Long,WANG Liang-Ming**,ZHANG Gai-Sheng*,SHENG Ying,LI Ya-Xin,Niu Na,ZHAO Zhuo-Jun   

  1. Key Laboratory of Crop Heterosis of Shaanxi Province, Northwest A&F University, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling 712100, China
  • Received:2011-02-24 Revised:2011-05-20 Online:2011-09-12 Published:2011-06-28
  • Contact: 张改生, E-mail: zhanggsh@public.xa.sn.cn, Tel: 029-87092152

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Abstract: 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 AgentSQ-1, and control plant with water. Results showed that male sterility rates in Wujiuzhuaruangu and Xianggu were from 95% to 100% under the proper spraying concentration at the specific developmental 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 best spraying concentrations for best 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 hybrid foxtail millet.

Key words: Foxtail millet (Setaria italica Beauv), CHA-SQ-1, Physiological male sterility

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