Archana Mishra, A Nandi, GS Sahu, S DAS, IC Mohanty, SK Pattanayak and P Tripathy
The present investigation was undertaken to study the combining ability of parents and crosses for fruit yield and quality components in tomato using 45 hybrids involving 10 parents in half diallel fashion. Forty-five crosses along with ten parents were evaluated in randomized block design with three replications at research farm, Department of Vegetable Science, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, during Rabi season of 2015-16, 2016-17 and 2017-18.
Analysis of variance for combining ability and the estimates of variance components indicated that the mean squares due to parents were significant for all characters which revealed significant contribution of parents towards general combining ability variance components for most of traits. The mean sums of squares were significant for all traits indicating the significant contribution of hybrids for specific combining ability variance components. This indicated the involvement of additive as well as non-additive type of gene actions in the inheritance of these traits.
The best general combiners for various traits were BT-507-2-2 for plant height, branches plant-1, flowers cluster-1, fruits cluster-1, yield plant-1, yield plot-1. Similarly, BT-22-4-1 for number of cluster plant-1, fruits plant-1, diameter of fruit, average fruit weight. Utkal Deepti for days to 1st flowering, TLCV incidence while BT-317 for days to 50% flowering, acidity content; BT-21 for fruit length; BT-19-1-1-1 for pericarp thickness; BT-1 for number of locules fruit-1, total soluble solid content, ascorbic acid content and BT-17-2 for bacterial wilt incidence.
Best cross combinations viz., Utkal Kumari x BT-22-4-1, BT-19-1-1-1 x BT-3, Utkal Kumari x BT-19-1-1-1, BT-22-4-1 x BT-3 and BT-19-1-1-1 x BT-507-2-2 were found to be best specific combiners for yield plant-1.
Archana Mishra, A Nandi, GS Sahu, S DAS, IC Mohanty, SK Pattanayak and P Tripathy. Studies of combining ability in tomato (Solanum lycopersicum L.) for vegetative growth, yield and quality traits. J Pharmacogn Phytochem 2020;9(1):466-473.