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Genetic variability studies in elite genotypes of tomato (Lycopersicon esculentum Mill.)

KrishiKosh

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Title Genetic variability studies in elite genotypes of tomato (Lycopersicon esculentum Mill.)
 
Creator Jatav, Pradeep Kumar
 
Contributor Panghal, V.P.S.
 
Subject Proteins, Enzymes, Ghee, Solutes, Animal husbandry, Concentrates, Acidity, Milk products, Economic systems, Protein products
 
Description The present investigation entitled “Genetic variability studies in elite genotypes of tomato
(Lycopersicon esculentum Mill.)” was carried out at Research Farm of the Department of Vegetable
Science, CCS Haryana Agricultural University, Hisar during spring summer season of 2014-15 to study
the genetic variability present in twenty-three tomato genotypes. The genotypes were evaluated on the
basis of plant height, number branches, days to 50% flowering, number of trusses per plant, number of
flowers per cluster, number of fruits per truss, number of fruits per plant, fruit yield per plant, average
fruit weight, equatorial and polar diameter of fruit, number of locules per fruit, total soluble solids,
acidity, ascorbic acid content and days to harvesting, which differentiate the tomato genotypes.
Analysis of variance studies indicated significant difference among all the genotypes for all the
characters under study. Genetic variability studies showed high PCV and GCV values for total fruit
yield per plant, number of fruits per plant and number of fruits per truss, indicating that a greater
amount of genetic variability was present for these characters and thus, there is greater scope for further
improvement by genetic manipulation. High heritability coupled with high genetic advance as percent
of mean was observed for fruit yield per plant, number of fruits per plant, number of fruits per truss and
average fruit weight, which indicated that these traits were under the strong influence of additive gene
action, and hence, simple selection based on phenotypic performance would be more effective. The
total yield per plant had positive and highly significant correlation with average fruit weight, number of
locules per fruit, acidity and days to ripening. It indicated that the improvement in these traits leads to
increase in total yield. The highly positive direct effect on total yield was shown by number of fruits
per plant, number of flowers per cluster, equatorial diameter of fruit, number of branches per plant,
number of locules per fruit and days to ripening, suggested that direct selection based on these
characters would result in higher breeding efficiency for improving the yield in tomato.
 
Date 2016-10-25T10:00:42Z
2016-10-25T10:00:42Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81701
 
Language en
 
Format application/pdf
 
Publisher CCSHAU