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Plant Pathology Journal
Year: 2002  |  Volume: 1  |  Issue: 2  |  Page No.: 36 - 39

Reaction of Some Hybrid Germplasms to Major Three Diseases of Rice

B.K. Mohanta, M.R. Alam, M.K. Anam, M.A. Habib and M.M. Alam    

Abstract: Twenty-eight bred restored lines and four standard checks were screening for resistance to bacterial leaf blight (caused by Xanthomonas oryzae pv. oryzae), sheath rot (caused by Sarocladium oryzae), sheath blight (caused by Rhizoctonia solani), during the t. aman and boro season. The breakout and severity of percent leaf/sheath area diseased were recorded under natural infection. On the basis of disease intensity, one breeding line was found moderately resistant, 13 were moderately susceptible and 13 were susceptible and 5 were highly susceptible to BLB at t. aman season and at boro season, 5 were highly resistant, 5 were resistant, 12 were moderately resistant and 9 were moderately susceptible to BLB. In case of sheath rot, 6 were moderately resistant, 26 were moderately susceptible and 2 susceptible in t. aman season. One line was resistant, 14 moderately resistant and 17 were moderately susceptible to sheath rot in boro season. At t. aman season, 29 lines were resistant, 3 were moderately susceptible and at boro season, all cultivars including checks were resistant to sheath blight. Considering both seasons, the accession numbers 56, 57, 64, 66, 71 and 73 showed comparatively better performance against above mentioned three major rice diseases.

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