Variation in susceptibility to blast fungus, Pyricularia oryzae Cav. in cultivated and wild rice

Katsuya, K.

Reports of the Tottori Mycological Institute 10: 553-560

1973


Accession: 000259848

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Abstract
The genetic variability and susceptibility to the P-2 str. of P. oryzae of 16 strs. of cultivated rice and 36 of wild rice spp. were determined in inoculation tests. A few strs. of cultivated rice and most strs. of closely related rice spp. were highly heterogeneous with respect to susceptibility, while distantly related spp. were comparatively homogeneous. Genetic variability for susceptibility to the P2 strain of P. oryzae was examined in 16 forms of cultivated rice and 36 wild rice species. A few of the cultivated forms and most of those of closely related wild species were highly heterogenous with respect to susceptibility, while distantly related species were comparatively homogenous.