利用醋酸洋红压片镜检了冬性、半冬性、春性小麦品种的主穗及分蘖穗上不同位置花粉的发育时期 ,结果表明 :主茎穗早于其他分蘖穗 ,芒露 0 .5 cm的相应幼穗、主穗及一级分蘖穗多处于单核中晚期 ,为最佳接种时期 ;在同一主穗中 ,穗轴上不同位置花药发育时期为中部早于下部早于上部 ,调查统计单核中晚期花粉所占比例为 :冬性品种 81 .0 %、半冬性品种 78.5%、春性品种70 .4% . The developmental stages of pollen at different positions on the main and tillering spikes of winter, semi-winter and spring wheat cultivars were observed with the magenta tablet. The results showed that the main stem was earlier than the other tillers, cm, the main ear and the first tiller spike were mostly in the middle and late mononuclear stage, which was the best inoculation period. In the same main ear, the anther development stage at different positions on the cob was earlier than the lower part and earlier than the upper part, The statistics of late pollen accounted for 81.0% of winter varieties, 78.5% of semi-winter varieties and 70.4% of spring varieties.