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University of Agricultural Sciences, Raichur (2012)

COMBINING ABILITY STUDIES IN GROUNDNUT (Arachis hypogaea L.)

RAMESH TAMAGOND

Titre : COMBINING ABILITY STUDIES IN GROUNDNUT (Arachis hypogaea L.)

Auteur : RAMESH TAMAGOND

Université de soutenance : University of Agricultural Sciences, Raichur

Grade : Master of Science (MS) 2012

Résumé partiel
Investigation was undertaken on combining ability studies in groundnut (Arachis hypogaea L.) to assess combining ability, gene action and heterosis for yield and yield related traits at University of Agricultural Sciences, Raichur. Twenty eight hybrids obtained by crossing eight selected parents in diallel mating without reciprocals along with their parents and a check (TMV-2) were evaluated in a Randomized Block Design in three replications during Kharif 2011. Analysis of variance revealed a significant difference for parents and hybrids for 13 characters indicated that the parents and hybrids were genetically different. Predominance of non additive gene action was evident for all the characters studied owing to < 1.00 ratio of GCA to SCA. However, character, kernel yield per plant (gm) where the ratio was > 0.5 indicated that they are under control of both additive and non-additive gene action. Among the parents, R-2001-2 (21.76gm), ICGV-00350 (21.47gm) and R-8808 (19.23gm) recorded higher per se performance. The crosses, R-8808 x ICGV-00350 (30.43gm), R-2001-2 x R-8808 (29.83gm), R-2001-2 x ICGV-00350 (28.87gm) and R-8808 x R-2001-3 (25.50gm) recorded higher per se performance. So the cross (R-8808 x ICGV-00350) exhibited highest and significant heterosis to an extent of 49.55, 41.77 and 110.85 per cents over mid parent, better parent and widely grown check (TMV-2) respectively

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