Tomatoes crop and yield is suffered every year due to number of fungal diseases. Important fungal diseases limiting tomato production. Diseases caused by fungus is develop through soil-borne, above-ground infections and in some instances are transmitted through pest and insect feeding. Conventional breeding and the molecular biological approaches to understand the biology of host-pathogen interaction so that the disease can be managed and crop loss prevented.
Mutation is defined as sudden and extreme heritable change in gene which is not perceptible or ascribable to segregation or recombination. Variation in the individuals either induced by environment or due to the hereditary change during genetic recombination.