Emergence of Aggressive Population in the Bipolaris sorokiniana of Barley (Hordeum vulgare L.) Through Anastomosis
2015
Bashyal, B. M. | Chand, Ramesh | Aggarwal, Rashmi
Bipolaris sorokiniana is a hemibiotrophic pathogenic fungus responsible for spot blotch of wheat and barley. Evolution process of most virulent population of B. sorokiniana of barley was studied through colony morphology, melanin content, spore production, pathogenicity, nuclear condition and anastomosis. Bridge (H) type and hyphal tip anastomosis were observed between black and white isolates. Maximum number of nuclei (4.14 nuclei cell⁻¹) were present in mixed isolates followed by white isolate (2.43 nuclei cell⁻¹) and black isolate (1.14 nuclei cell⁻¹). Results indicated that aggressive population in B. sorokiniana was evolved by the variations in the nucleus due to anastomosis.
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