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期 刊 ：植物保护学报 1996年

关键词：梨孢菌；寄主植物；交互作用；

Keywords:Pyricularia, host plants, interactions,

摘 要 ：作者研究了1个稻梨孢菌株与4个稻以外寄主梨孢菌株在混合接种和间隔接种条件下,在水稻植株上的交互作用。结果表明:弱致病菌与强致病菌间交互作用较强,非致病菌与强致病菌间较弱。弱致病菌可明显降低强致病菌的致病性,非致病菌对强致病菌的作用,多数组合表现为减轻病害,但有少数组合表现为促进发病。弱致病菌先接种;2天后接种强致病菌,比两者混合接种具有更强烈的互作效应,病斑数减少达35.7％—38.1％。先接种菌的孢子浓度对后接种菌的致病性也有影响。

Abstract:The present study was carried out to investigate the effect of interactions of a rice Pyricularia isolate with 4 isolates from non-rice hosts based on the severity of rice seedling blast. To tested two rice varieties, the rice isolate was high virulent an

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