Genetic characterization and divergence studies in bottle gourd [Lagenaria siceraria (Mol.) Standl.]
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Date
2017
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CCSHAU
Abstract
A field experiment entitled “Genetic characterization and divergence studies in bottle gourd
[Lagenaria siceraria ( Mol.) Standl. ]” comprising of 37 genotypes was conducted at Research Farm of
the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar during rainy 2016.
The genotypes were planted in randomized block design with three replications. The data recorded
were subjected to statistical analysis. Considerable amount of variability was noticed for the 16
quantitative traits as indicated by the analysis of variance. High estimates of GCV and PCV were
recorded diameter of fruit, length of fruit, weight of 100 seeds, no. of fruits per vine, number of
primary branches, nodes to first male flower, fruit yield per vine, leaf length, nodes to first female
flower and fruit yield per vine. High heritability coupled with high genetic advance as percent of mean
was observed for diameter of fruit, length of fruit and weight of hundred seed that these traits were
under the strong influence of additive gene action The fruit yield per vine and per hectare had positive
and highly significant correlation with most of the characters viz., number of primary branches, vine
length, number of fruits per vine and length of fruit. Fruit yield per vine and yield per hectare were also
positively correlated with each other at both genotypic and phenotypic level. Path coefficient days to
first female flower opening, number of primary branches, leaf width, days to fruit harvest, nodes to first
female flower, fruit yield per plant, number of fruits per vine and weight of seeds. The maximum intercluster
distance was observed between clusters within a range of 9.75 to 22.49. Cluster VII and cluster
VIII showed maximum inter cluster distance of 21.37, indicating that in these clusters had maximum
divergence. Hence hybridization between the genotypes included in these different clusters may give
high heterotic responses and thus better segregants. The lowest inter cluster distance was noticed
between cluster II and IV (14.87), followed by that presented between cluster IV and V (14.99),
indicating the close relationship among the genotypes included in these clusters. The genotypes viz.,
GH-48, GH-54, GH-58, Rajender Chamatkar and GH-55 based on yield and yield contributing
characters were found promising for future improvement programme.
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