Alternaria porri en ajo pdf

Dssa found 75% similarities with alternaria porri genomic dna ln482533. Dec 01, 2016 purple blotch, caused by alternaria porri ellis cifferi, is a serious disease incurring heavy yield losses in the bulb and seed crop of onion and garlic worldwide. It can infect all aboveground parts of the plant in addition to the bulb. Purple blotch of onion angela madeiras, umass extension diagnostic lab purple blotch is caused by the fungus alternaria porri. Efecto in vitro del fungicida iprodione sobre alternaria spp. Initial small, white leaf lesions developing into elliptical, purplish spots up to several cm long. It is an important disease in warm, humid oniongrowing regions around the world. Except where otherwise noted, content on this site is licensed under a creative commons attribution, noncommercial cc bync licence. Porri is the largest section, containing almost all alternaria species with medium to large conidia and long beaks, some of which are important plant pathogens e. Largespored alternaria pathogens in section porri disentangled.

The highest spore production ofstemphylium botryosum f. Garlic and leeks may be affected as well as onions. Homogeneity of the degree of infection was established. Because many of the members of this group have similar morphology, alternaria dauci has also been classified as formae specialis of carrots, or a. Podredumbre del cuello del ajo botrytis neck rot y botrytis rot of. Black fungal sporulation often visible within spot. Sporulation of both pathogens was inhibited by illumination during the entire wetting period or during the last 12 h of it. Effect in vitro of fungicide iprodione on alternaria spp. Morphology of infection of onion leaves by alternaria porri article pdf available in canadian journal of botany 728. Pdf morphology of infection of onion leaves by alternaria porri. Purple blotch is caused by the fungus alternaria porri. Alternaria dauci is included in the porri species group of alternaria, which is classified for having large conidium and a long, slender filiform beak. Effect of light on sporulation of alternaria porri f. A method of experimental evaluation of alternaria porri on.