【摘要】 稻瘟病菌(Pyricularia oryzae Cavara)与杂草马唐瘟菌(P.grisea [(Cke.)Sacc.]均包含在Pyricularia属内。两菌除从形态学上进行区分外,快速鉴定法可用80％盐酸处理两菌的分生孢子,再用1％亮绿,或0.1％棉兰,或0.2％碱性藏红3种染料的酒精溶液处理。在稻瘟病菌分生孢子的细胞中,明显地出现原生质向细胞中央浓缩的质壁分离现象,而马唐瘟菌则无明显反应。马唐瘟菌可以引致水稻穗颈瘟,却很少侵染叶片产生叶瘟。更多还原

【Abstract】 The fungous pathogens of rice blast disease and crab grass blast disease are close members in the same genus, Pyricularia. P. oryzae Cavara is usualy parasitic on rice and P. grisea (Cke. ) Sace. on other cereals and grasses. Besides the morphological differentiation of the two organism, rapid detection may be used by treating the conidia with 80% hydrochloric acid and staining with alcohol solutions of 1% brilliant green, 0.1% cotton blue or 0.2% safranine T. After staining, there will be plasmolysis of conidial cells in P. oryzae but no such reaction in P. grisea. P. grisea may came panicle blast of rice, but it can not infect rice leaves.更多还原