“Heterosis, combining ability and gene action studies in cherry tomato (Solanum lycopersicum L. var. cerasiformae)

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dc.contributor.advisorKumar, Dharminder
dc.contributor.authorkaplex, Abhishek
dc.date.accessioned2023-03-16T08:57:09Z
dc.date.available2023-03-16T08:57:09Z
dc.date.issued2021-11-22
dc.description.abstractThe present investigation entitled “Heterosis, combining ability and gene action studies in cherry tomato (Solanum lycopersicum L. var. cerasiformae)” was carried out at vegetable farm located at Regional Horticultural Research and Training Station, Dr. YS Parmar University of Horticulture and Forestry, Jachh (Nurpur), DistrictKangra (H.P.) during the year 2020 and 2021. The experimental material for the present study comprised of five parents and ten crosses, developed by crossing these five diverse tomato lines in half diallel design (excluding reciprocals). ). All the parents and their hybrids along with the standard check (Cheramy) were planted in a Randomized Complete Block Design for their evaluation in Summer, 2021. The observations were recorded on days to first flowering, days to marketable maturity, average fruit weight (g), number of fruits per cluster, number of fruit clusters per plant, harvest duration (days), number of fruits per plant, fruit yield per plot (kg), plant height (cm), number of locules per fruit, pericarp thickness (mm), total soluble solids (oBrix), fruit colour and observation on insect pest (if any). The analysis of variance indicated highly significant differences among the genotypes for all the traits studied. Experimental results revealed that two lines viz., Punjab Red Cherry and Punjab Sona Cherry were found superior on the basis of mean performance and general combining ability studies. Three cross combinations viz., Solan Red Round × Punjab Sona Cherry, Pusa Cherry Tomato-1 × Punjab Sona Cherry and Punjab Red Cherry × Punjab Kesar cherry were found best on the basis of mean performance, specific combining ability and heterosis studies. Hence, these hybrid combinations can be tested further at multiplications before recommendation for commercial cultivation in Himachal Pradesh and in India as well. Gene action studies indicated predominance of dominance effects in governing most of the traits suggesting exploitation of hybrid vigour and developing hybrids for improvement of these traits in cherry tomato on the basis of present studies..en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810195303
dc.keywordsHeterosis, combining ability, Cherry tomato, Diallel analysisen_US
dc.language.isoEnglishen_US
dc.pages77en_US
dc.publisherCollege of Horticulture and Forestry Neri, Hamirpur (H.P.)en_US
dc.subVegetable Scienceen_US
dc.themeEstimate the magnitude of heterosis for important horticultural traits in cherry tomatoen_US
dc.these.typeM.Scen_US
dc.title“Heterosis, combining ability and gene action studies in cherry tomato (Solanum lycopersicum L. var. cerasiformae)en_US
dc.typeThesisen_US
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