GENETIC DIVERGENCE STUDIES IN TOMATO (Solanum lycopersicumL.)
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Date
2015
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UHF,NAUNI
Abstract
ABSTRACT
Tomato (Solanum lycopersicum L.) is one of the most important warm season fruit
vegetable widely produced and consumed in the world both for fresh market and for
processed food industries. The present investigation entitled “Genetic divergence studies in
tomato (Solanum lycopersicum L.),” was carried out at the Vegetable Research Farm,
Department of Vegetable Science, Dr. Y. S. Parmar University of Horticulture and Forestry,
Solan (HP) during Kharif, 2014. Fifty-six genotypes including check variety Solan Lalima
were evaluated to ascertain the extent of variability, correlation and path analysis for yield
and other horticultural traits alongwith estimation of genetic divergence among genotypes.
The experiment was laid out in Randomized Complete Block Design with three replications.
The present studies revealed significant variation among genotypes for all the traits. A wide
range of variability was observed for all the traits. High genetic variability was recorded for
number of fruits per plant, average fruit weight, lycopene content and yield per plant while
low genetic variability was recorded for days to first picking. High estimates of heritability
and high genetic gain was recorded for number of fruits per plant, average fruit weight,
lycopene content, locular wall thickness and yield per plant indicating possibility of their
effective selection. Fruit yield per plant was significantly and positively correlated with
average fruit weight, plant height, inter-nodal distance, pericarp thickness and locular wall
thickness. Path analysis revealed that average fruit weight followed by number of fruits per
plant had maximum positive direct effect towards fruit yield per plant. Genetic divergence
studies revealed that hybridization between genotypes of cluster IV and V would be more
rewarding for getting superior progeny.
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