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抗叶锈育种已成为世界上大多数地区的一个重要课题,抗病品种在叶锈病防治中起着主要作用。然而,叶锈菌的生理专化性可使叶锈菌能侵害以前的抗病品种。和秆锈病、条锈病一样,叶锈小种已威胁到许多小麦品种抗性的稳定性。切斯特(1946)在叶锈专著中指出,十九世纪九十年代后期被列为高抗品种的Turkey,在1938年成为美国俄克拉何马州和堪萨斯州最感病的品种之一。Turkey变为感病的原因,在于能克服该品种抗性的叶锈变异型日益增多。 Kanred是最早的抗叶锈品种之一,该品
Anti-leaf rust breeding has become an important issue in most parts of the world. Disease-resistant varieties play a major role in leaf rust prevention and control. However, the physiological specificity of leaf rust allows leaf rust to invade previous resistant varieties. As with stripe rust and stripe rust, the rapeseed races have threatened the stability of many wheat cultivars. Chester (1946) pointed out in the leaf rust monograph that Turkey, listed as a highly resistant variety in the late 1890s, became one of the most susceptible varieties of Oklahoma and Kansas in the United States in 1938. The reason why Turkey became susceptible lies in the increasing variation of leaf rust that can overcome the resistance of this variety. Kanred is one of the earliest anti-leaf rust varieties, the product