Record Details

Genetic variability and corerelation studies in Biparental mating populations of tomato (Solanum lycopersicon (Mill.) Wettsd)

KrishiKosh

View Archive Info
 
 
Field Value
 
Title Genetic variability and corerelation studies in Biparental mating populations of tomato (Solanum lycopersicon (Mill.) Wettsd)
 
Creator K..Shivaprasad
 
Contributor O.Sridevi
 
Subject Genetics and Plant Breeding
 
Description An investigation was carried out during kharif and Summer seasons of 2007-08 at
Botany Garden, College of Agriculture, University of Agricultural Sciences, Dharwad to
study the nature and magnitude of variability generated and character association for different
quantitative traits in the populations (J/S, S/J, J/G, G/J) obtained by attempting biparental
mating among the selected plants of F2 generation of three commercial tomato hybrids i.e.
J.K. Desi (J), Shivaji (G) and Sasya-54 (S).
In general, all populations exhibited high PCV, GCV for number of primary branches,
fruits per plant, locules per fruit and fruit yield per plant, indicating scope for selection.
Association of high heritability with moderate to high genetic advance for plant height,
number of primary branches, number of fruiting clusters, fruit shape index, locules per fruit
and pericarp thickness suggested the role of additive gene action and improvement through
visual selection. Population G/J exhibited high PCV, GCV, heritability and GA for main
yield attributing traits, whereas, J/G for fruit related characters. Other two populations J/S and
S/J did not differ much between themselves. Populations involving the parents J and G
exhibited the highest between and within family variance for many traits, indicating the
potentiality of these cross combinations to release variability. Whereas, the population S/J
showed the lowest between and within family variance for fruit related traits. Per cent
superior progenies was more in the populations J/G and G/J.
Correlation studies revealed that plant height, number of primary branches, number of
fruiting clusters per plant, fruits per truss, fruits per plant, average fruit weight and pericarp
thickness exhibited high significant positive correlation with fruit yield, suggesting that these
characters should be considered while selecting plants for fruit yield improvement. Path
coefficient analysis revealed that number of fruits per plant and average fruit weight had high
direct and indirect effect in all the populations.
 
Date 2016-10-27T15:29:21Z
2016-10-27T15:29:21Z
2008
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/82576
 
Format application/pdf
 
Publisher UAS, Dharwad