Genetic analysis for forage and quality traits in cowpea [Vigna unguiculata (L.) Walp.

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dc.contributor.advisorDevinder Pal Singh
dc.contributor.authorMaan, Chamkor Singh
dc.date.accessioned2016-09-26T14:16:53Z
dc.date.available2016-09-26T14:16:53Z
dc.date.issued2014
dc.description.abstractCowpea is a warm season, quick growing, single cut, highly nutritious legume. Cowpea is mainly grown for fodder starting from March to July. Due to its fast growing nature, it supplies nutritious and palatable fodder during kharif when there is scarcity of green fodder. The experimental material comprised of 9 parental lines and their 36 crosses in half diallel fashion were evaluated. The estimate of variances due to combining ability showed that the general combining ability variances were higher for the characters like stem girth, leaf:stem ratio, days to flowering, leaf length, leaf breadth, number of leaves per plant, number of branches per plant, green fodder yield per plot, detergent fibre contents which indicated the predominance of additive type of gene effects for these traits whereas variances due to specific combining ability effects were higher for vine length, cowpea mosaic virus, dry matter yield per plot, crude protein content and in vitro dry matter digestibility indicating the predominance of non-additive type of gene effects for these traits. The parent 85-5E was found to be the best general combiner for both green fodder and dry matter yields. The crosses FOS 1 x CL 398 and CL 391 x C 88 were the best specific combiner for green fodder and dry matter yields, respectively. Heterosis breeding offered considerable scope for improving forage and dry matter yields, their components and various quality traits in cowpea as indicated by experimental results of the present invetigation. The cross combination CL 398 x C 88 showed positive significant heterobeltosis for both green fodder yield and dry matter content. The genetiic diversity analysis among ten parental lines revealed that all the genotypes showed more than 70% similarity for all the 41 SSR markers used for the present investigation. The highest value of similarity coeffifient (0.92) was detected between genotypes CL 401 and FOS 1 which indicated the less divergence whereas the lowest value of similarity coefficient was evident between 85-5E and CL 367 indicating more divergence. The analysis revealed narrow genetic base among genotypes used in the study.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/78883
dc.language.isoenen_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.subAnimal Genetics and Breeding
dc.subjectcowpeaen_US
dc.these.typeM.Sc
dc.titleGenetic analysis for forage and quality traits in cowpea [Vigna unguiculata (L.) Walp.en_US
dc.typeThesisen_US
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