Vol. 11, Issue 2 (2022)

Author(s):
Pooja K Bhajantri, Dr. RM Hosamani, Dr. O Sridevi and Dr. MS Biradar

Abstract:
An experiment was conducted on “Combining ability analysis in double cross hybrids of tomato” at the University of agricultural Sciences, Dharwad, India, during rabi 2021. Crossing was done using half diallel mating design using ten single cross F₁’s to obtain 45 double cross hybrids. Ten single cross F₁’s, 45 double cross F₁’s, one commercial check and one local check were used to study combining ability analysis in double cross hybrids of tomato. The estimates of GCA variance was higher for the characters number of branches per plant, fruit length and fruit width. The estimates of SCA variance was higher for the characters plant height, fruit length, fruit width, single fruit weight and yield per hectare. Parents, ‘Varuna’ (0.24) and ‘Indus 11-05’ (0.21) for yield per plant, ‘JK Desi’ (3.80) and ‘Mithili-NTH-1348’ (1.46) for number of fruits per plant, ‘Mahy-701’ (3.17) for plant height, ‘Mahy-701’ (0.39) exhibited highest significant positive gca effects. For plant height, the highest significant positive sca effect was depicted by ‘Swathy × Indam 1006’ (17.03). For number of flowers per inflorescence, sca effect was found to be highest in the cross ‘S-85 × Varuna’ (1.26). For number of fruits per cluster, the highest significant positive sca effect was exhibited by ‘Abhilash × Indam Rohini’ (1.06). For number of fruits per plant, the positive sca effect was found in the cross Abhilash × Varuna. For yield per plant, sca effect was found to be highest in Varuna × Indam Rohini (0.97).