小麦慢白粉抗病性的组分和影响因素研究进展

Research Advances on Components and External Factors of Slow-Mildewing Resistance in Wheat

自1970年发现小麦品种Knox对白粉病(Blumeriagraminisf.sp.tritici)的抗性以来,小麦慢白粉抗病性为抗性材料的利用和品种选育提供了一个有意义的发展方向。本文对小麦慢白粉抗病性的组分和外界环境引起的慢白粉性的改变作了较为详尽的讨论,指出侵染效能和产孢能力的降低是小麦慢白粉抗病性的基本组分,小麦生育期和慢白粉抗病性的表达密切相关,N肥施用量以及播期对病害的影响在抗性程度不同的慢白粉品种上不尽一致。文中还提出今后需要明确和解决的问题,以期充分利用和保存这一具有持久特性的抗病资源。

Since the resistance of Knox, a wheat variety, to powdery mildew (Blumeria graminis f.sp. tritici) was discovered in 1970, the slow-mildewing resistance of wheat had become an important object in the (utilization) of resistance materials and breeding of new variety, due to the enduring and stable nature of the adult-plant resistance. The components of slow-mildewing resistance in wheat (cultivars) and the (external) factors influencing its expression, together with several parameters available for screening wheat (cultivars) and breeding lines for slow-mildewing resistance, were discussed in this paper. Some problems involved in the field were also put (forward).