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Variability studies in Bitter gourd

KrishiKosh

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Title Variability studies in Bitter gourd
 
Creator Sahoo, Subhasmita
 
Contributor Mishra, H.N
 
Subject Variability, Bitter Gourd
 
Description The genetic parameters were estimated for 15 quantitative characters in 23 genotypes
(germplasms) of Bitter gourd at Department of Vegetable Science, College of Agriculture,
Bhubaneswar, Orissa University of Agriculture and Technology following Randomized Block
Design having three replications during the kharif season 2014.
The genotypes showed a wide range of variation for all the characters studied.
Among the genotypes evaluated, CO-1, Phule Greengold, IIVR-2, Meghana-1 and Japani
Green Kalara are identified as the ideal varieties to be grown in Bhubaneswar (Odisha)
condition. High estimates of genotypic coefficient of variation (GCV), heritability (broad
sense) and genetic advance as percentage of mean altogether at a glance were observed for
the characters such as seed/flesh ratio, yield per plant, number of fruits per plant, fruit weight,
fruit length and vine length suggesting additive gene action for expression of these characters.
So, selection based on these characters will be more effective in improvement of fruit yield of
bitter gourd. Correlation studies among the traits indicated that there is a strong inherent
association between yield per plant with characters like leaf area, number of fruits per plant,
fruit weight, fruit length and 100 seed weight both at phenotypic and genotypic levels
depicting that these are important correlated characters contributing towards yield. Path
analysis study of yield and its components revealed that number of fruits per plant had the
maximum positive direct effect followed by leaf area and number of primary branches per
plant while, vine length exhibited the highest negative direct effect on fruit yield in bitter
gourd. Genotypes studied in this trial were grouped into seven different clusters by using D2
statistics and Tocher’s methods. Cluster VI (three parents) and VII (eight parents) showed
highest inter-cluster distances were the most divergent ones and hybridization involving
parents from these two clusters would be result oriented. Pusa Domousumi and Thusi are the
two most divergent parents. The characters such as seed/flesh ratio yield per plant and fruit
weight predominantly contributed towards genetic divergence among the parents. So,
selection of parents from the present set of genotypes under study differing in these
quantitative characters may be useful for developing hybrids in bitter gourd.
 
Date 2017-01-03T15:13:18Z
2017-01-03T15:13:18Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/94199
 
Language en
 
Relation Th;4401
 
Format application/pdf