多年来,抗病品种的应用已成为禾本科作物病害防治的重要支柱,并在现今的病害综合防治中继续发挥着重要作用。遗憾的是在现代农业的进程中,作物的种和品种单一化种植,尽管有着严重的弊端,但仍然有快速扩展的趋势。植物病理学家把许多严重威胁性病害未能得以持久性控制的现象,归因子寄主群体的遗传单一性和均匀性。事实上,寄主的遗传均匀性的确更能促使病害的 Over the years, the application of disease-resistant varieties has become an important pillar of disease prevention and control of gramineous crops and continues to play an important role in the comprehensive prevention and control of diseases. Unfortunately, in the process of modern agriculture, the monoculture of crop species and varieties, despite serious drawbacks, is still rapidly expanding. The phenomenon that plant pathologists have failed to persistently control many serious threat diseases is attributed to the genetic unity and homogeneity of the host population. In fact, the genetic homogeneity of the host does indeed contribute to the disease