1Department of Plant Pathology, University of Agricultural Sciences, GKVK, Bangalore-560065.
2Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore-560065.
3Natural Resources Institute, University of Greenwich, ChathamMaritime, Kent ME4 4TB, UK.
Abstracts of the papers presented at the 16th Annual Convention and International Symposium of Indian Virological Society on “Management of Vector-Borne Viruses” at International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru-502324, Hyderabad, India, February 7–10, 2006.
Tomato leaf curl virus (ToLCV) disease is a major constraint in tomato production. Host plant resistance is an effective and environmentally acceptable means of managing the disease. This was attempted through the production of hybrids by involving three ToLCV resistant varieties (Sankranthi, Nandi and Vybhav) with promising inbred lines having good horticultural characters viz, fruit shape, size and ascorbic acid content. Thirty-two hybrids were produced and evaluated along with ToLCV tolerant commercial hybrids (Mruithyunjaya-2, Sasya 9449 and Laxmi) during summer 2005. Of the 32 hybrids tested, 16 hybrids showed resistant reaction to ToLCV. Four hybrids viz., Sankranthi x PKM-1, Sankranthi x Arka Meghali, LCR-9 x Vybhav and Vybhav x PKM-1 were found more promising with respective to resistance, yield and other horticultural characters. The fruit yield of the promising hybrids ranged between 51.51 to 66.89t/ha, which was on par with the commercial hybrids evaluated.
