银叶老鹳草种群中诱导保护抗性的研究

Induced Protective Resistance in Greanium sylvaticum Populations

银叶老鹳草种群中诱导保护抗性的研究刘登义，查德民，周忠泽劳斯·埃里克松（安徽师范大学生物系，芜湖２４１０００）（瑞典国立宇米欧大学生态植物学系）ＩｎｄｕｃｅｄＰｒｏｔｅｃｔｉｖｅＲｅｓｉｓｔａｎｃｅｉｎＧｒｅａｎｉｕｍｓｙｌｖａｔｉｃｕｍＰｏｐｕｌａ...

eranium sylvaticum plants differ in susceptibility to a macrocyclic rust, Uromyces geranii,depending upon whether they were previously infected by microcyclic rusts,Puccinia spp.and which rust ( Puccinia,morthieri of P. leveillei ) previously diseased them. Field surrey , field transplantation and inoculation experiments show that previous infection by Puccinia spp. can decrease the susceptibility of G.sylvaticum to U. geranii. Furthermore,plants infected by P. morthieri show a lower probability of becoming infected by U. geranii compared to those infected by P. leveillei. Thus,interspecific pathogenic interactions and induced protective resistances are existed in G. sylvaticum populations. Induced protective resistance may be one important factor in explaining disease patterns observed in natural plant populations.