Table No. 4: Reaction of different varieties against CLCuV

when transmitted though petiole graft technique

Verities	Total No. of plants grafted	No. of plants successfully grafted	No. of plants showing symptoms	Duration Days	Scale	Intensity
CIM-599	10	8	8	15	5-6	++
CIM-598	10	7	7	16	4-5	+
CIM-595	10	8	8	14	4-6	+
CIM -573	10	9	9	10	3-6	+++
CIM-557	10	5	5	14	3-5	++
CIM -496	10	8	8	10	5-6	+++
Total	70	52	52	—		~

 0=Immune,      +=Tolerant,    ++=Susceptible,     +++=highly susceptible

CONCLUSION

            It is concluded that the cotton plant is susceptible to cotton leaf curl virus from four to fourteen weeks. Cotton leaf curl virus developed early on susceptible plants. Mature cotton plants effectively avoid cotton leaf curl virus, infection as compared to plants of early age and subsequent losses occur when cotton plants become infected at early age. Cotton leaf curl virus is transmitted by whitefly, as the complete control of whitefly, is not possible due to presence of large number of alternate host e.g. Okra, bringle, citrus, tobacco, chilies, cucurbits tomato and weeds. The most promising option for Cotton Leaf curl virus disease is the development of resistant varieties, attempt to control the virus by insecticides and other mean to control the vector have been ineffective best management practice and resistant varieties should be developed to control this disease.