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    ThesisItemOpen Access
    Line X Tester Analysis in Brinjal (Solanum Melongena L.)
    (Birsa Agricultural University, Ranchi, 1995) Ramesh Kumar; K.K.Prasad
    Studies on line X tester analysis for combining ability and heterosis were conducted in Brinjal (Solanum melongene L.) . Twelve crosses from three lines and four testers with the seven parents were evaluated for combining ability , heterosis and wilting for eleven quantitative characters. Highly significant difference among the treatment were obtained in the analysis of variance for number of flower cluster per plant, number of flower per plant , days to 50 per cent flowering, number of branches per plant, plant height at harvest, fruit yield per plant, number of fruit/plants, fruit weight, fruit length, fruit girth and days to list occurrence of wilt. Significance heterosis was observed over mid parent, better parent and best parent in majority of the characters studied , except for fruit weight and days to first occurrence of wilt. Heterosis manifested for fruit yield was largely due to heteosis for number of flower cluster and number of fruits per plant .Five of the crosses viz : sm-6 xPK, SM-6 X PPL, Sm-6 X T-3 , Sm-6 and Ps X T-3 were the outstanding for heterosis in fruit yield per plant. The line X tester analysis revealed considerable variations among lines, testers and hybrids. Combining ability analysis showed SM-6 and BB-9 to be good general combiners for important yield contributing characters and among tested T-3 was observed to be good general combination for many of the yield attributes. The crosses SM-6 x PPL, BB-9 x ph-4 and ps x T-3 showed high specific combining ability for many of the yield contributing characters. A clear cut relationship between the general combining abilitly effects and specific combining ability effects could not be found, but the preponderance of non additive components of variations for all characters studied except plan t height was observed. Majority of the crosses having high specific combining ability effects showed significant heterosis for respective yield attributes.