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本文通过自然植物种群接种实验、人工接种实验和野外调查研究了 (Geraniumsylvaticum)对老鹳草单孢锈菌 (Uromycesgeranii) (长生活史 )的抗病性在受柄锈菌 (Puccinia) (短生活史 )感病前后和受 2种柄锈菌 (P .lev eillei或P .morthieri)感病后有无区别 ,以及在同一季节里感染同一寄主植物的长生活史单孢锈菌和短生活史柄锈菌间的相互作用。病原菌间的相互作用使寄主植物产生诱导保护抗性。结果表明 ,P .leveillei可诱导寄主植物产生短时间的保护抗性 ,而P .morthieri可能诱导寄主植物产生长时期的保护抗性。诱导保护抗性可能是影响自然植物种群中植病式样的重要因素之一。
In this paper, we studied the resistance of Geraniumsylvaticum to Uromyces geranii (long life history) through natural plant population inoculation experiments, artificial inoculation experiments and field investigations under the influence of Puccinia History) before and after being susceptible to both P. rusti and P. morthieri, as well as the long-lived history of S. typhimurium and short-lived history of the same host plant infected in the same season Puccinia rusty interaction between. Interactions between pathogens cause the host plant to induce protective resistance. The results showed that P. leveillei could induce short-term protective resistance in host plants, while P. morthieri could induce long-term protective resistance in host plants. Induction of protective resistance may be one of the important factors influencing plant species in natural plant populations.