化学杀雄剂SQ-1对春小麦的化学杀雄效果初报

Study on Male Sterility of Gansu Spring Wheat Induced by Chemical Hybridizing Agent SQ-1

为了明确化学杀雄剂SQ-1对春小麦雄性不育的诱导作用,以5个春小麦品种为研究对象,观察SQ-1不同喷药时期对不同基因型小麦的杀雄效果。结果表明,幼穗分化时期(Feeks8.0)为春小麦最佳喷施时期;用4.0kg/hm^2的SQ-1进行雄性不育的诱导,所有供试品种的相对雄性不育率平均可达到96.64%。喷施SQ-1后,春小麦的株高明显降低且穗长缩短。另外,基因型的不同导致化杀效果及制种产量有差异。

In order to study the effect on male sterility and agronomic traits between different genotypes of wheat induced by CHA SQ-1,the experiment is conducted with 5 Gansu Spring wheat cultivars and SQ-1 spraying at different stages. The result shows that Feeks 8.0 is the best spraying stage. Spraying 4.0 kg/hm^2 SQ-1,the average male sterility rate is 96.64%. The result also shows that SQ-1 could reduce the plant hight and shorten the length of the spike of wheat. In addition,different genotypes of wheat are with different male sterility rate and different yield of seed production.