Fig. 4a–fFrom: Morphological development of sclerotia by Sclerotinia sclerotiorum: a view from light and scanning electron microscopySclerotium at maturation stage, after 8 days of incubation. a Rounded structure. b Mycelium covering the sclerotium surface. c Membranous layer developing on the sclerotium surface. d Hyphae protruding into the outer surface. e–f Swelling cells (c) of hyphal tipsBack to article page