化学杂交剂GENESIS对小麦的杀雄效果

采用4个品种，4个剂量，2个表现活性剂的裂区试验和2个品种的异地试验，对新型化学杂交剂GENESIS诱导小麦雄性不育的效果进行了研究。结果表明：91）GENESIS杀雄彻底，2．0kg/hm^2以上剂量的不育率均超过95％，3．0、5．0kg/hm^2剂量达到或接近100％，且没有诱导小麦雄性不育的专一性；（2）不育率为95％以上的人工饱和授粉结实率和自然授粉结实率最高达67．65％和49．83％；（3）5．0kg/hm^2剂量下，添加表现活性剂MON8161的人工饱和授粉结实率比添加MON59160的降低18．9％，差异显著。说明表现活性剂MON8161对雌蕊的活力具有一定影响；（4）相同基因型在两个地点的不育率和自然授粉结实率差异不显著，证明GENESIS的杀雄效果比较稳定。

STUDIES ON THE PERFORMANCE OF CHA-GENESIS INDUCED MALE STERILITY OF WHEAT

The male sterile inducing effect of new CHA-GENESIS was studied,using 3 variety,4 rates and 2 surfactant with Split-plot Design experiment,and 2 varieties in different experiment locations in 1997-1999.The results indicated that(1) GENESIS had a good effect on male sterile inducing of common wheat,the male sterility rates(MSR) of over 2.0kg/hm2 was surpassing 95%,the sterility rates of 3.0kg/hm2, 5.0kg/hm2 were up to or nearly 100%,and it didnt have specificity on male sterile inducing of common wheat;(2) Among treatment of 95% over MSR, the artificial pollinating fertility (APF) and natural crossing rate (NCR) were up to 67.65% and 49.83%;(3)The APF of 5.0 kg/hm2 GENESIS + Mon8161 treated wheat was reduced by 18.9%,compared with 5.0kg/hm2 GENESIS + MON59160,and the difference was significant,it indicates that effect on the vigor of pistil by MON8161 was bad;(4) The difference of MSR and NCR of the same genotypes was not significant in 2 different locations,it proves that effect of male sterile inducing by CHA-GENESIS is stable.