Abstract
Bakanae disease is one of the emerging diseases of rice (Oryza sativa L.). Gibberella fujikuroi species complex were detected in popularly grown rice varieties of India with infection percentage ranging from 1 to 24 %. Pathogenicity test of Fusarium spp. was performed in susceptible rice variety Pusa 1121, which showed reduced seed germination and possessed varying ability to cause symptoms. On the basis of internal transcribed spacer (ITS) and Translation Elongation Factor (TEF), three Fusarium spp., viz. F. verticillioides, F. fujikuroi and F. proliferatum were found associated with bakanae disease of rice in India. Maximum numbers of slender and chlorotic leaves were produced by F. fujikuroi (90 %), whereas crown rot and stem rot was produced by F. verticillioides (50 %). F. proliferatum produced both elongation and rotting symptoms. Information on the bakanae disease, its distribution, characterization and identification in India could be helpful for the development of management strategies.
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