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在人工条件下,对冬小麦抗雪霉病的抗性水平进行筛选试验。通过如下过程确定抗病性:在20℃下生长一周—在2℃低温下生长三周—在-3℃下接种和培育雪霉病原菌九周—在温室里让小麦恢复生长三周时,计算植株存活率,确定品种抗病性。存活率越高的品种,抗病性越强。继续在20℃下生长六周,提高了品种生存的综合能力,但增加了区别品种间抗性能力的困难。通常在这六周生长过程中,在第三周时存活率有一个降低
Under artificial conditions, the resistance of winter wheat to snow mildew resistance screening test. Disease resistance was determined by the following procedure: Growth for one week at 20 ° C - Growth for three weeks at 2 ° C low temperature - Vaccination and incubation of P. aeruginosa at -3 ° C for nine weeks - Restoration of the wheat for three weeks in the greenhouse Plant survival rate to determine the variety resistance. The higher the survival rate of varieties, the stronger disease resistance. Continue to grow at 20 ℃ for six weeks to improve the comprehensive ability of species to survive, but increased the difficulty of distinguishing resistant ability among breeds. Often during the six weeks of growth, there is a decrease in survival at the third week