CM268是中国水稻研究所植物激素研究室新研制的水稻化学杀雄剂，经1994～1997年试验表明CM268具有较高的选择杀雄活性，在水稻花粉母细胞减数分裂期使用，诱导水稻雄性不育效果明显，自交败育率可达95%～100%，化杀制种产量在1.0～1.5 t/hm2。进一步研究表明， CM268通过干扰花药中淀粉及蛋白质的积累，抑制植物营养体向花药运输脯氨酸及花药自身合成脯氨酸，并降低花药中脯氨酸的利用率，引起花药营养匮缺，导致花粉败育。%CM268is a new chemical hybridizing agent(CHA) formulated by Plant Growth Regulator Section, China National Rice Research Institute (CNRRI). It is showed from the experiment conducted during 1994 to 1997 that CM268 had a high effect on inducing rice male sterility when applied at pollen mother cell meiosis stage. 95%～100% self-sterility rate and 1.0～1.5 t/hm2 seed production yield with acceptable seed purity could be achieved by CM268 application. Further studies demonstrated that CM268 influenced and decreased the accumulation of starch and protein in anthers, inhibited the proline synthesis rate and utilization efficiency, which resulted in nutrition deficiency in anther and caused the pollen died of starvation.
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