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EVALUATION OF BRINJAL (Solanum melongena L.) GERMPLASM FOR ELITE ACCESSIONS

KrishiKosh

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Title EVALUATION OF BRINJAL (Solanum melongena L.) GERMPLASM FOR ELITE ACCESSIONS
 
Creator MADHAVI GARAPATI
 
Contributor Dr.M. RAJASEKHAR
 
Subject variability, heritability, genetic gain, character ,genotypes
 
Description A study was carried out to know variability, heritability, genetic gain, character association and direction of relationship between highly heritable characters, genetic divergence and reaction to shoot and fruit borer and wilt in brinjal (Solanum melongena L.) genotypes. Forty seven genotypes were evaluated in RBD with two replications using the variety Gulabi as check during kharif, 2012 at Horticultural Research Station, Venkataramannagudem, Dr. Y. S. R. Horticultural University, West Godavari district, Andhra Pradesh.
The study revealed significant differences among genotypes for different characters studied. Among all the genotypes studied, genotype IC261772 recorded the highest yield per ha. The genotypes IC261772 (Yield per plant and yield per ha), IC099676 (Fruit weight), IC112991(Fruit length), IC354135 (Resistance to shoot and fruit borer), IC090785 (Fruit length) and IC285140 (Fruit length and Yield per plant) were found to be elite for different characters.
Characters like number of flowers per inflorescence, number of fruits per cluster, per cent fruit set in medium, short and pseudo short styled flowers, number of fruits per plant, fruit diameter (cm), fruit girth (cm), fruit length (cm), fruit weight (g), calyx length (cm), fruit yield per plant (kg), yield per ha (t/ha), per cent shoots and fruits infested with shoot and fruit borer and per cent plants infected with wilt recorded high magnitude of PCV and GCV revealing the presence of distinct genetic variation among the accessions under study and hence greater scope for improvement through selection.
High heritability combined with high genetic advance as per cent of mean was observed for all traits under study except for days to final picking and number of harvests. Hence, these characters can be fixed by simple selection procedures like pure line selection, mass selection as additive genes play a major role in inheritance of these characters and there is wide scope for improvement through breeding methods like hybridization etc.
Number of flowers per inflorescence, number of fruits per cluster and number of fruits per plant associated positively and significantly at both genotypic and phenotypic levels with fruit yield per plant denoting the importance of these characters as yield attributing traits which are reliable for improvement through selection.
Plant spread (cm), per cent fruit set in long styled flowers, number of fruits per plant, fruit girth (cm), fruit length (cm), calyx length (cm), days to first picking, total number of harvests, per cent fruits infested with shoot and fruit borer exerted high positive direct effect on fruit yield per plant (kg). Direct selection of these characters would be effective in genetic improvement of brinjal.
Analysis for divergence using D2 statistic revealed highly significant differences for different traits, grouping the 48 genotypes into 7 clusters. Maximum inter cluster D2 values were noticed between clusters I and VII, followed by clusters IV and VII indicating the presence of distinct genetic divergence while maximum intra cluster distance was recorded in cluster VI. Fruit weight (g), days to final picking and number of fruits per plant were chief contributors towards total divergence denoting the role of these characters in selection of parents from distinct clusters for hybridization programme. Selection of parents from clusters I and VII provide high chance of feasible cross combinations for producing new recombinants.
Evaluation for shoot and fruit borer incidence revealed that five genotypes viz., IC285140, IC354135, IC421194, IC545893 and local check variety Gulabi showed moderate resistance to shoot and fruit borer suggesting their utilization in further breeding programmes especially for resistance breeding. Eleven genotypes showed tolerance to shoot and fruit borer.
 
Date 2016-07-25T11:58:04Z
2016-07-25T11:58:04Z
2013-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69727
 
Language en
 
Format application/pdf
 
Publisher Dr. Y. S. R. HORTICULTURAL UNIVERSITY