抗穗发芽小麦新种质的筛选与鉴定

Screening and Identification of Pre-harvest Sprouting Resistance of New Wheat Cultivars

[目的]为小麦抗穗发芽育种提供白粒、半冬性抗性新种质。[方法]利用田间延迟收获自然鉴定的方法对最新育成的65份新品系开展穗发芽抗性鉴定。[结果]同一区组内不同品种间发芽率差异达极显著水平,即不同品种间田间抗穗发芽能力存在显著差异。经鉴定白粒穗发芽抗性显著优于对照品种济麦22的品种(系)有12个,平均发芽率为3.0%～9.2%,占所有参试品种数的16.9%,主要来源于7个不同组合。[结论]抗性种质的鉴定为下一步小麦抗穗发芽育种提供了技术支撑。

[Objective]To provide white grain and semi-winter resistance new germplasm for pre-harvest sprouting (PHS).[Method] Resistance of wheat breeding, PHS evaluation of sixty-five varieties bred lately was carried out by delayed harvest under natural conditions.[Result]The germination rate of different varieties in the same group was significantly different, which showed there were significant differences in the PHS resistance of different varieties. There were12 varieties (lines) from 7 various combinations, which was16.9% of all tested accessions, with germination rate 3.0%-9.2% showed more high PHS resistance than control Jimai22.[Conclusion] The identification of these resistant germplasm provided technical support for the PHS resistance of wheat breeding.