GENETIC ANALYSIS OF YIELD AND CONTRIBUTING TRAITS IN TOMATO (Solanum lycopersicum L.)
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Date
2022-11
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UHF,NAUNI
Abstract
ABSTRACT
The present study entitled “Genetic analysis of yield and contributing traits in
tomato (Solanum lycopersicum L.)” was carried out at the Experimental Farm, Regional
Horticulture Research and Training Station, Bajaura, Kullu (HP) in summer of 2019, 2020
and 2021. The experiment was laid out in Randomized Complete Block Design with three
replications comprising forty six genotypes to elucidate the information on the extent of mean
performance, heterosis, combining ability, nature and magnitude of gene action for different
horticultural traits. Inheritance of mature fruit colour in tomato was also studied by observing
the segregation pattern of different generations (F2, B1 and B2) using chi- square analysis. The
analysis of variance indicated highly significant differences among all the genotypes for all
the traits studied. Based on GCA effects, the parents viz., Solan Lalima and BajT-4 were the
most promising for fruit yield per plant. Gene action studies indicated predominance for non
additive gene action for almost all the traits except for average fruit weight. The experimental
results revealed that that on the basis of overall mean Solan Lalima × BajT-4, Solan Lalima ×
BajT-11, Arka Meghali × BajT-10, Arka Abha × H-7998, Arka Abha × BT-21, Solan Lalima
× Arka Meghali and H-7998 × BajT-4 performed well for majority of yield and yield
contributing traits and these hybrids can be recommended for cultivation after multilocational
testing. Chi-square analysis revealed that Solan Lalima (red) × BN-7 (yellow)
showed dominance of red colour over yellow colour.