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Pathogen for Rice Blast disease

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1. Pyricularia oryzae (Syn : P. grisea) (Sexual stage : Magnaporthe grisea)

2. Mycelium of the fungus, is hyaline to olivaceous, septate and highly branched. Conidia are produced in clusters on long septate, olivaceous slender conidiophores.

3.Conidia are obpyriform to ellipsoid, attached at the broader base by a hilum. Conidia are hyaline to pale olive green, usually 3 celled.

4. The perfect state of the fungus is M. grisea. It produces perithecia. The ascospores are hyaline, fusiform, 4 celled and slightly curved.

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BAU Ranchi
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