Sclerotia begin to
develop after 7-8 days mycelial growth of S .rolfsii. Initialy a
felty white appearance, sclerotia quickly melanize to dark
brown coloration. Narsimha rao also reported that, fungus
Sclerotium rolfsii showed characteristics with white, radiating
abundant mycelial growth on the affected portion of plant and
tuber. Initially sclerotia exhibited white colour later turn to
chocolate brown (Narasimha, 2000).