000			02521nam a22002057a 4500
003			OSt
005			20250703162920.0
008			250703b |||||||| |||| 00| 0 eng d
040			_cUniversity of Agricultural Sciences, Dharwad
041			_aEnglish
082			_a635 _bKIL
100			_aKilliindu
245			_aCombining Ability Analysis in Double Cross Hybrids of Tomato (solanumlycopersicuml.)
250			_aM Sc (Agri)
260			_aDharwad _bUniversity of Agricultural Sciences, Dharwad _c2025
300			_a91 _c32 Cms
520			_aTomato (Solanum lycopersicum L.) is a vegetable crop that belongs to the Solanaceae family is appreciated for both fresh consumption and processing. A research is conducted to explore the combining ability and heterosis in double-cross F1 hybrids of tomato to meet the growing demand for high-yielding and high-quality tomato varieties. Employing a full-diallel mating scheme with seven single-cross F1 hybrids, the study focused on evaluating heterosis, combining ability, and identifying superior hybrid combinations for enhanced yield and quality traits.Significant genetic variability across the traits studied, with certain hybrid combinations demonstrating notable heterotic effects were found. The best-performing double-cross hybrid, ‘NTH 3072 × Darsh’, achieved impressive yields of 3.45 kg/plant. It showed highest positive significance for mid, better and commercial heterosis for yield per plant.Combining ability analysis showed a dominant influence of both additive and non- additivegeneticeffects,withtraitssuchasplant height,numberofprimarybranches,andfruit width exhibiting significant general combining ability (GCA) variance. The combination of genotypes rather than the direction of the cross is the primary factor influencing the trait expression. ‘Darsh’ showed the highest positive GCA effect for yield per plant whereas ‘Darsh × Utsav’exhibited the highest positive SCA effect.Yield per plant demonstrated a significant positive correlation with the fruit weight, fruit length, fruit width and number of fruits per plant. The yield was positively influenced directly by fruit weight and number of fruits per plant at both phenotypic and genotypiclevels.Remarkably, 44.00 per cent of the plants displayed transgressive segregants for yield per plant, and the ‘NTH 3072 × Darsh’cross had 80.00 per cent of its segregants exhibiting superior traits.
700			_aPatil R V
942			_cTH _eM Sc (Agri) _h635 _kKIL _n0 _6635_000000000000000
999			_c71100 _d71100