Madras Agricultural Journal
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STUDIES ON THE PHYSIOLOGY OF GROUNDNUT BLIGHT PATHOGEN

Abstract

Phoma microspora Balasubrm, et. Narayan, causes a blight disease of groundnut. The paper reports on requirements of the fungal pathogen for its growth and sporulation in vitro. Lactose supported maximum mycelial growth of the pathogen, while galactose was associated with maximum conidial production. Among the nitrogen sources tested, ammonium oxalate and ammonium chloride favoured maximum growth and sporulation respectively. Growth and conidial production were optimum at 25°C and at pH 7.

Keywords: Groundnut blight, Mycelial growth, Sporulation, Physiology.

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