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中国农学通报

中国农学通报 ›› 2003, Vol. 19 ›› Issue (1): 21-21.

所属专题： 生物技术； 水稻

• 目次 • 上一篇    下一篇

利用外源ABA控制杂交水稻穗萌的研究

雍太文 杨文钰 王小春   

  • 出版日期:2003-02-25 发布日期:2003-02-25

Research in the Exogenous ABA on the Pre-harvest Sprouting of Hybrid Rice Seed

YONG Tai-Wen YANG Wen-Yu WANG Xiao-Chun   

  • Online:2003-02-25 Published:2003-02-25

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摘要： 利用外源ABA对水稻不育系岗46A在不同喷施时期下进行不同浓度的喷施处理。结果表明，在各个喷施时期下，喷施ABA均显著降低了岗46A的穗芽率，并且喷期不同要求ABA的有效浓度也不相同，早喷（授粉末期）要求ABA浓度较高（90mg/L），迟喷（灌浆中期或乳熟末期）要求ABA浓度较低（50 mg/L）。此外喷施ABA还影响了结实率与千粒重。处理后的种子经贮藏，未发现其种子活力下降。在杂交水稻繁殖制种的灌浆中期喷施50 mg/L的ABA是防治穗芽的有效途径。

关键词: 非对称性增温, 非对称性增温, 物候期, 特色林果, 塔里木盆地

Abstract: The test of exogenous ABA with different concentrations on rice G46A-line at different spraying time was conducted. The results showed: Exogenous ABA can evidently reduce panicle sprouting percentage of rice G46A-line at every spraying time. The effective concentrations of ABA are different at different spraying time. The effective concentration (90mg/L) is high at early spraying time, and the effective concentration (50mg/L) is low at late spraying time. The exogenous ABA affect seed setting percentage and grain dry weight. It was not found anything negative on F1 germination rate in ABA treatment after a period of storage.