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对品种多样性控制小麦白粉病的效果以及对产量和蛋白质的影响进行了研究,为利用品种多样性控制白粉病提供理论依据和技术支持。采用SSR技术分析5个小麦品种的亲缘关系;2008年和2009年按组合所含品种数为2、3、4和5个进行组合,在田间种植混种组合和单播小区,人工接种白粉菌,比较各小区中小麦白粉病的AUDPC值、产量和蛋白质变化。结果表明,5个品种亲缘关系相对较近;2个品种混合时以抗感搭配较好,随着抗病品种比例增加控病效果增强;2008年混合种植中有防治效果的组合占54.55%,相对防效为10.02%～47.58%,2009年有防治效果的组合占23.08%,相对防效在1.85%到18.96%之间;在适当的组合中,如京冬8号/轮选987、京双16/京411/京冬8号对小麦白粉病有控制效果,混种不会影响产量和蛋白质含量;当有大量能克服本地品种抗性的外来菌源时混合种植的控病效果降低。品种多样性可以用做防治小麦白粉病的一项措施。
Effects of variety diversity control on wheat powdery mildew and its effects on yield and protein were studied, which provided theoretical basis and technical support for the control of powdery mildew with variety diversity. SSR technique was used to analyze the genetic relationship of 5 wheat cultivars. In 2008 and 2009, 2, 3, 4 and 5 cultivars were used in combination. Hybrids and unicellular communities were planted in the field and inoculated with powdery mildew , To compare the AUDPC value, yield and protein change of wheat powdery mildew in each plot. The results showed that the relatives of five cultivars were relatively close. The combination of two cultivars was better with anti-susceptibility, and the disease control effect was enhanced with the proportion of resistant cultivars. In 2008, the combinations with control effects accounted for 54.55% The relative control effects ranged from 10.02% to 47.58%. In 2009, the combination with prevention and control effects accounted for 23.08% and the relative control effect ranged from 1.85% to 18.96%. In the appropriate combinations such as Jingdong 8 and Luncheon 987, Double 16 / Jing 411 / Jingdong 8 had control effect on wheat powdery mildew, and the mixed production did not affect the yield and protein content. When there were a large number of foreign germs that could overcome the resistance of local varieties, the control effect of mixed planting was reduced. Variety can be used as a measure against wheat powdery mildew.