【摘要】 用合成的新哒嗪类化合物9403，以fenridazon－k为对照，进行了9403对小麦的去雄效应的研究，试验结果表明9403对品种农大3338及北农2号的去雄效应与fenridazon－k相似，平均去雄率为98．0％，与fenridazon－k（98．2％）差异不显著，但9403对籽粒的影响程度比fenridazon－k小；平均人工授粉结实率为89．4％，显著高于fenridazon-k（81．0％）；人工授粉结实千粒重为27．6g，亦显著高于fenridazon－k（26．0g）。在试验的基础上，初步确定了9403对品种农大3338及北农2号较适宜用药时期和剂量。更多还原

【Abstract】 A new pyridazine compound 9403 was synthesized and its hybridizing activity for wheat compared with fenridazon-k were studied. The results indicated that 9403 has similar chemical hybridizing activity as fenridazon-k for two wheat cultivars BAU3338 and Beinong 2. The mean male sterility rates induced by 9403 and fenridazon-k were 98.0%and 98. 2% respectively with no significant difference. The mean artificial fertility rates were 89. 4% and 81.0% respectively with significant difference at 5% level. The mean weight of 1000 grains obtained by artificial fertilization were 27. 6 g and 26.0 g respectively with significant difference. Based on the analysis the proper dosage and treating stage of using 9403 was also determined.更多还原