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稻瘟病是世界各稻区分布最广的病害之一。其病原菌Magnaporthe grisea (Hebert) Barr nov. comb. (anamorph Pyricularia oryzae Cavara)属高度变异的真菌。国内外曾对其复异进行了较长时期的研究,认为异核现象、准性生殖及非整倍性是变异的机制。近年来,
Rice blast is one of the most widely distributed diseases in various rice regions of the world. The pathogen Magnaporthe grisea (Hebert) Barr nov. Comb. (Anamorph Pyricularia oryzae Cavara) is a highly variable fungus. At home and abroad have conducted a long period of its research on different times, that heterogeneous nuclear phenomenon, quasi-reproductive and aneuploidy is the mechanism of variation. In recent years,