Heterobeltiosis and Inbreeding Depression in Tomato (Solanum lycopersicumL.) for Yield, Yield Attributes and Quality

A total of 45 experimental hybrids generated by diallel mating design (without reciprocals). using 10 parents and evaluated with 2 checks (Siri and US-618) during Rabi 2010-11 at Vegetable Research Station, Rajendranagar, Hyderabad (Dr. YSRHU) to study the heterobeltiosis and inbreeding depression. Four best F1’s and F2’s were selected and evaluated along with their parents for inbreeding depression for sixteen characters viz., plant height (cm), number of primary branches per plant, days to 50% flowering, number of flowers per cluster, number of fruits per cluster, fruit length (cm), fruit width (cm), average fruit weight (g), fruit yield per plant (kg), number of locules per fruit, pericarp thickness (mm), TSS (°Brix), titrable acidity (%), ascorbic acid content (mg/100 g), total sugars (%) and lycopene content (mg 100/ g).