ESTIMATION OF COMBINING ABILITY AND GENE ACTION IN CHILLI

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dc.contributor.advisorAmit Vikram
dc.contributor.authorAKSHAY D A
dc.date.accessioned2024-08-24T06:38:22Z
dc.date.available2024-08-24T06:38:22Z
dc.date.issued2024-07-06
dc.description.abstractThe present study titled “Estimation of Combining Ability and Gene Action in Chilli” was carried out during the Kharif, 2022 and 2023 at the Experimental Farm, Department of Vegetable Science, College of Horticulture, Dr YSPUH&F, Nauni-173 230, Solan (HP), India to study the information on the extent of mean performance, heterosis, combining ability, nature and magnitude of gene action for various horticultural traits. In experiment Ⅰ material consisted of 45 genotypes comprising of 9 diverse parents and 36 F1 hybrids developed from half diallel mating design. The genotypes were evaluated in a field trial conducted in Randomized Complete Block Design with three replications during Kharif, 2023. The observations were recorded on days to 50% flowering, plant height (cm), number of branches per plant, plant spread (cm), fruiting habit, days to ripe fruit maturity, pedicel length (cm), fruit length (cm), fruit width (mm), fruit weight (g), number of fruits per plant, fresh ripe fruit yield per plant (g), average dry fruit weight, dry weight recovery (%), dry fruit yield per plant (g), number of seeds per fruit, 1000 seed weight (g), capsaicin (%) and oleoresin (%). The analysis revealed that all the genotypes possessed wide spectrum of variability and showed significant differences for parents and hybrids for the traits under studied. The parents UHFCHI-10 (471.68g), C-9 (460.20g) and G-1-1 (414.75g) whereas, cross combinations Him Palam Mirch 2 × UHFCHI-10 (658.92 g), UHFCHI-10 × Anugraha (594.98 g), Him Palam Mirch 2 × G-1-1 (563.80 g) and UHFCHI-10 × G-1-1 (551.03) recorded the high fresh ripe fruit yield per plant. These hybrid combinations exhibited heterosis over check ranging from -8.98% (C-9 × Kullu Local) to 145.41% (Him Palam Mirch 2 × UHFCHI-10) and heterobeltiosis ranging from -46.89% (C-9 × Kullu Local) to 65.68% (UHFCHI-5 × DKC-8) for fresh ripe fruit yield per plant. For yield and component traits, the parental lines, UHFCHI-10 (61.83), G-1-1 (45.77) and Him Palam Mirch 2 (36.84) had exhibited good gca effect for fresh ripe fruit yield per plant. These genotypes with high gca can be used in multiple crosses and their segregating population can be used to develop superior recombinants. Among the cross combinations, the top five high yielding hybrid combinations with significant positive sca effects for fruit yield were G-1-1 × Kullu Local (131.57), Him Palam Mirch 2 × UHFCHI-10 (130.38), UHFCHI-5 × DKC-8 (124.93), C-9 × UHFCHI-12 (116.39) and UHFCHI-10 × Anugraha (98.29). Estimates of genetic variance revealed the preponderance of non-additive gene action for all the characters except plant height, number of branches per plant, fruit width, fruit weight, and 1000 seed weight where these traits were found to be governed by additive gene action. In experiment ⅠⅠ, two hybrid combinations used for generation mean analysis, Him Palam Mirch 2 × C-9 and UHFCHI-10 × G-1-1. Of the four traits under study, plant height, fruit length, width, and weight, dominance was predominant in both the crosses, some traits like fruit width and plant height showed additive gene action predominantly
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810213680
dc.keywordsCHILLI
dc.keywordsESTIMATION OF COMBINING ABILITY AND GENE ACTION IN CHILLI
dc.language.isoEnglish
dc.pages132+iii
dc.publisherUHF Nauni
dc.subVegetable Science
dc.theme“Estimation of Combining Ability and Gene Action in Chilli
dc.these.typePh.D
dc.titleESTIMATION OF COMBINING ABILITY AND GENE ACTION IN CHILLI
dc.typeThesis
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