Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

LIGHT AND SCANNING ELECTRON MICROSCOPY ON Colletotrichum capsici – A FRUIT ROT PATHOGEN AND INTERACTION WITH A SUSCEPTIBLE CHILLI VARIETY (Pages : 22 - 25)

Light and scanning electron microscopy was done on fruit rot pathogen Colletotrichum capsici for a susceptible chilli (Capsicum annuum) variety in relation to rapid pathogenesis and host pathogen interaction. It was observed that the pathogen produced spherical, hemispherical and irregular acervuli 100-180 ?m in diameter which was associated with many conspicuous setae of 93-110 ?m length. Each acervulus was filled up with numerous curve conidia with 18-25 ?m length. After inoculation conidia of the pathogen adhered intimately on the curved fruit surface and germinated within 24 hours to produce germ tube and formed sub-globose appressoria for initiating infection. Infected host cells became discoloured or dead in addition to extensive degradation of cell wall. Protruding fruiting bodies of the pathogen caused easy disruption of epidermal layers of host tissues.Download