Selection of differentials against AG-groups of rice sheath blight organism, Rhizoctonia solani
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Authors
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A.B. DASH, S.B. LODH and S. GANGOPADHYAY
Division of Plant Pathology, Central Rice Research Institute, Cuttack 753 006
Keywords:
Rhizoctonia solani, 'H' factor, anastomosis groups, differentials, riceAbstract
Cross inoculation of 8 anastomosis groups (AG) of Rhizoctonia solani against 8 rice cultivars were made to study the suitability of these cultivars as differentials for screening a large number of rice varieties against sheath blight of rice (Rhizoctonia solani). From three years of pot and field studies, it was observed that these rice cultivars can be satisfactorily used as differentials against predominant AG groups, irrespective of sclerotia, formation, size and survivability.
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