Kavita Yadav and Prabhat Kumar Yadav

In our country, tomato (Lycopersicon esculentum Mill) is cultivated throughout the year because of the favourable agroclimatic conditions in our part or another. They also prefer warm growing season. High humidity and high temperature makes the tomato plants susceptible towards foliage diseases. Mechanical transmission will occur if virus concentration in plant sap and virus stability are high. Grafting has been important in flowering research. Leaves or shoot from plants induced to flower can be grafted on to uninduceds plants and transmit a floral stimulus that induces them to flower. It is evident from the table 2 that the virus was transmitted by cleft and leaf graft showed 100 percent transmission. Virus was transmitted by cleft and leaf graft showed 100 percent transmission. And the insect transmission and virus-vector relationship in the preliminary screening, it was found that none of the above mentioned insects best M. persieae could transmit the virus.

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