National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Rice (Oryza sativa L.) is an important cereal crop and prone to many diseases out ofwhich, rice blast caused by Pyricularia grisea is of significant economic importance due to its destructive nature leading to serious yield loss. Blast infected leaves of rice, Panicum grass and finger millet were collected from different fields of OUAT farm, Bhubaneswar. Typical eye shaped or diamond shaped spots with pointed ends and ashy white center with reddish brown margin appeared on the leaves of rice, Panicum repens and finger millet. Different isolates of Pyricularia grisea from rice, Panicum and finger millet were isolated on oat meal agar and their cultural characteristics were studied. Pin prick method was followed to prove pathogenicity test and cross inoculation test produced typical symptoms at 15 days after inoculation. P. grisea isolates from rice, finger millet and Panicum repens produced maximum disease intensity (78.52, 85.18, 81.48 PDI) in their respective hosts respectively. P. grisea isolates from rice and finger millet could not cause significant damage when inoculated in finger millet and rice plant respectively. P. grisea isolates from Panicum caused higher disease score of 4.07 (PDI 45.18) in rice than rice blast isolate in Panicum grass (score 2.67, PDI 29.62).
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