Character of Floret Opening in Male Sterile Wheat Induced by SQ-1

In order to provide basic information for optimizing hybrid wheat production system,we investigate floret character of CHA wheat induced by SQ-1 under field condition.The effect of concentration,pH and spraying stage of CHA spraying on glume degree had also been studied. The result showed that:(1)In initial flowering stage,glume degree of CHA wheat changed rapidly during day,Fp1 had glume opening-glume closing-glume opening phenomena;(2)It was difficult to achieve balance between glume degree and low sterility rate.According to the result,a treatment with 4 kg/ha set,pH=8 and Feekes 8.5 could balance the conflict between glume degree and sterility rate.