作物のフザリゥム病に関する研究 : 第2報キュウリ幼苗根圏細菌および放線菌が立枯れ発生に及ぼす影響

概要

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The present paper deals with the result of experiments on the effect of rhizosphere bacteria and actinomycetes on the damping-off of cucumber seed1ings inoculated with Fusarium oxysporum f. cucumerinum. Fusarium oxysporum f. cucumerinum, (F22), showed a strong pathogenicity to cucumber seed1ings and caused typical damping-off, when inoculated in steri1ized soil.Occurrence of post-emergence damping-off of the seed1ings, however, was extensively delayed by concomitant inoculation of F 22 with rhizosphere bacteria and actinomycetes. The extent of delay was remarkable when Gram-negative bacteria were inoculated concomitantly with F 22. Occurrence of pre-emergence damping-off of seed1ings was aoso delayed by the concomitant inoculation of F 22 with rhizosphere bacteria and actinomycetes, isolate A-C. These results suggested that occurrence pattern of pre-emergence damping-off and post-emergence damping-off in the field might be extensively influenced by the rhizosphere bacteria and actinomycetes.
日本植物病理学会の論文
1969-09-30