Cultural and morphological variability among different isolates of Sclerotinia sclerotiorum
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Authors
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Prajanya Dubey
Department of Plant Pathology, Acharya Narendra Deva University of Agriculture &Technology, Kumarganj, Ayodhya - 224 229, Uttar Pradesh, India.
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Sushil Kumar Singh
Department of Plant Pathology, Acharya Narendra Deva University of Agriculture &Technology, Kumarganj, Ayodhya - 224 229, Uttar Pradesh, India.
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Rishabhdev Mishra
Department of Plant Pathology, Acharya Narendra Deva University of Agriculture &Technology, Kumarganj, Ayodhya - 224 229, Uttar Pradesh, India
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S N Rahul
Department of Plant Pathology, Acharya Narendra Deva University of Agriculture &Technology, Kumarganj, Ayodhya - 224 229, Uttar Pradesh, India.
Keywords:
Stem rot, Sclerotinia sclerotiorum, Koch’s postulates, pathogenicity, sclerotia.Abstract
Pea (Pisum sativum L.), a vital legume globally and in India, is susceptible to various diseases. Among them, stem rot or white mold, caused by Sclerotinia sclerotiorum, is a major threat, impacting numerous plant species. This study focused on this pathogen, isolating it from infected pea plant parts and sclerotia. Pathogenicity of the fungus and virulence of different isolates of S. sclerotiorum was proved by following
Koch’s postulates. Symptoms emerged within five days of inoculation, starting as water-soaked lesions and progressing to white, fluffy fungal growth followed by sclerotia formation. In in-vitro, the fungus exhibited rapid growth with most isolates covering petri plates within 96 hours. Sclerotia development varied among isolates, with Lucknow isolate showing the highest number and largest size, while Jaunpur isolate produced the fewest and smallest sclerotia
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Manuscript will be accepted on the understanding that their content is original and that permission has been received in writing wherever necessary to produce previously published material (including quotations, data and illustrations) and that the manuscript has not been submitted/ accepted for publication elsewhere. Copyright resides with the Plant Protection Association of India.