LINGAIAH, H. BMURTHY RAMIREDDY, S. R. K2016-12-302016-12-3040865Th-9889http://krishikosh.egranth.ac.in/handle/1/93720The study entitled Line x Tester analysis for yield and bacterial wilt resistance in green brinjal (Solanum melongena L.) with the objectives of estimating magnitude of heterosis, combining ability effects and to identify the resistant sources for bacterial wilt resistance. The experimental material comprised of three lines viz., Arka Shirish, Mattugulla and Arka Kusumakar and four testers viz., IIHR-3, IIHR-7, WCGR and SM6-6 in Line x Tester mating design. Wide range of heterosis was manifested by the 12 F1 hybrids for all the characters. Among the 12 hybrids, 7, 4 and 1 hybrids exhibited significantly positive heterosis for fruit yield per plant over mid parent, better parent and commercial check, respectively. Maximum positive significant heterosis was observed in the cross Arka Shirish x WCGR (84.93%) over mid parent, Arka Shirish x WCGR (60.71%) over better parent and Arka Shirish x IIHR-7 (31.02%) over commercial check. The hybrid Mattugulla x WCGR exhibited highly significant heterosis for number of fruits/cluster and number of flowers per cluster while the same hybrid Mattugulla x WCGR showed significant heterosis for average fruit weight. Combining ability analysis revealed that the majority of the characters were under the control of non additive gene action as SCA variances were greater than GCA variances. Highly significant variation was observed due to genotypes and environments for all the 16 characters studied. Both gca and sca variances showed significant interactions. The genotypes Arka Shirish, Arka Kusumakar, IIHR-7 and SM6-6 were found to be good general combiners and Arka Shirish x IIHR-7 was identified as best specific combiners for fruit yield and other related traits as it showed high sca effect and per se performance (2.01 kg). For bacterial wilt disease, Mattugulla x WCGR and Mattugulla x SM6-6 were identified as best as they showed high resistant reactionenThesis