GENETIC EVALUATION STUDIES IN TOMATO (Solanum lycopersicum L.)
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Date
2017-10
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UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled “Genetic evaluation studies in tomato (Solanum lycopersicum
L.)” was carried out at Vegetable Research Farm, Department of Vegetable Science, Dr YS Parmar
University of Horticulture and Forestry, Nauni, Solan (HP) during kharif season, 2016. The experiment
was laid out in RCBD with three replications comprising of thirty five diverse genotypes of tomato
including Solan Lalima as check variety. The characters studied during the present study were days to 50
% flowering, days to marketable maturity, plant height (cm), number of fruits per cluster, number of fruits
per plant, average fruit weight (g), fruit yield per plant (kg) and per hectare (q), fruit shape index, pericarp
thickness (mm), number of locules per fruit, total soluble solids (°B), ascorbic acid (mg/100 g), fruit color,
harvest duration and incidence of buckeye rot (%). Analysis of variance revealed highly significant
differences among genotypes for all the characters under study. Among all genotypes, Punjab Sartaj was
found promising for yield and yield contributing traits. High phenotypic and genotypic coefficients of
variation were recorded for number of fruits per cluster, fruit yield per plant, number of fruits per plant and
average fruit weight. High heritability coupled with high genetic gain was recorded for number of fruits
per cluster, fruit yield per plant, number of fruits per plant and average fruit weight. Hence, selection for
these traits can prove effective for improvement in fruit yield. A highly positive and significant correlation
of fruit yield per plant with days to marketable maturity, plant height, number of fruits per cluster, average
fruit weight, pericarp thickness and harvest duration was observed, however it showed negative and
significant correlation with total soluble solids. Maximum positive direct effect towards fruit yield per
plant was exerted by average fruit weight followed by days to 50 % flowering, number of fruits per cluster
and harvest duration.
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