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Epidemiological studies of blast disease of rice plant 1. infection of panicle blast in leaf sheaths during booting stage


Korean Journal of Plant Protection 19(4): 203-211
Epidemiological studies of blast disease of rice plant 1. infection of panicle blast in leaf sheaths during booting stage
The pattern of blast disease incidence of Tongil-line rice varieties derived from the cross between Indica and Japonica varieties was different from that of Japonica rice varieties. The former showed discontinuity between the incidence of leaf blast and panicle blast; the incidence of leaf blast was slight, while that of panicle blast was severe. The level N fertilizer significantly influenced the incidence of leaf blast but slightly influenced that of panicle blast of Tongil rice varieties. The infection percentage of panicle blast of Tongil rice varieties was .apprx. 90%; most of them were infected in leaf sheaths during the booting stage. Infection of panicle blast of Japonica rice varieties in leaf sheaths during this stage was low, .apprx. 3%. The infection route of panicle blast in leaf sheaths during this booting stage, microflora in leaf sheath and specific susceptibility of young panicle to blast disease were investigated.


Accession: 005375399



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