PLANT PATHOLOGY AND NEMATOLOGY Resistance to Cotton Leaf Curl Virus (CLCuV) in a Mutant Cotton Line

Cotton leaf curl virus (CLCuV) is one of the major biotic constraints of cotton production in Pakistan. Cultivation of resistant cotton genotypes is the most effective method of reducing yield losses due to CLCuV. PIM-76-8/5 is a new CL-CuV-resistant line developed through the use of induced mutation. It exhibited a highly resistant response when artificially inoculated by grafting and produced yields significantly greater than the susceptible cultivar S-12. PIM-76-8/5 was field immune when naturally infected by the whitefly (Bemisia tabaci Genn.), the vector of CLCuV. At a few locations where a new strain of CLCuV has emerged and all of the previously developed resis