GENETIC STUDIES FOR YIELD AND QUALITY TRAITS IN SUMMER SQUASH (Cucurbita pepo L.)

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dc.contributor.advisorDharminder Kumar
dc.contributor.authorPRATIBHA SINGH
dc.date.accessioned2024-05-08T12:41:01Z
dc.date.available2024-05-08T12:41:01Z
dc.date.issued2023-12-27
dc.description.abstractThe present investigation “Genetic studies for yield and quality traits in summer squash (Cucurbita pepo L.)” was conducted at the experimental farm of Regional Horticultural Research and Training Station, Jachh, Kangra, Himachal Pradesh during the rabi season 2022-23. Twenty-one diverse genotypes of summer squash lines along with a check Australian Green were evaluated in Randomized Complete Block Design with three replications to estimate the extent of genetic variability, heritability, correlation and path coefficient analysis for yield and other horticultural traits along with the estimation of genetic divergence among the genotypes. Significant variations were observed among all the genotypes for all the studied characteristics, as indicated by the analysis of variance. Based on overall performance JSO-17, JSO-1, JSO-18 were found superior for yield per plant and other important horticultural traits. The prospect of incorporating them into future breeding programs is encouraging, given their potential as valuable parents. The estimates of PCV and GCV were high for traits like fruit weight, fruit length and β-carotene. High heritability estimates were also recorded for the traits fruit weight, fruit length and β-carotene. The correlation studies revealed that yield per plant had positive and significant correlation with fruit weight, fruit length, number of fruits per plant both at genotypic and phenotypic level. The path coefficient analysis revealed that the most significant positive direct effect on yield per plant was contributed by fruit weight followed by number of fruits per plant and TSS. Under genetic divergence studies, 21 genotypes were grouped into seven clusters and the highest intra-cluster distance was in cluster V while, the minimum intra- cluster distance was present in cluster I. The highest maximum intercluster distance was observed between cluster VII and cluster V. Whereas, the minimum inter-cluster distance between cluster VI with cluster IV. Finally, it was concluded that genotypes JSO-17, JSO-1 and JSO-18 may be further tested in multi-locational and multi-year trials so that stability and adaptability of these genotypes can be worked out and recommended for commercial cultivation.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810208822
dc.keywordsGENETIC STUDIES FOR YIELD AND QUALITY TRAITS IN SUMMER SQUASH (Cucurbita pepo L.)
dc.language.isoEnglish
dc.pages68
dc.publisherUHF Nauni
dc.subVegetable Science
dc.themeGenetic studies for yield and quality traits in summer squash (Cucurbita pepo L.)
dc.these.typeM.Sc
dc.titleGENETIC STUDIES FOR YIELD AND QUALITY TRAITS IN SUMMER SQUASH (Cucurbita pepo L.)
dc.typeThesis
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