Genetic variability in bottle gourd (Lagenaria siceraria (Mol.) Standl.) in relation to yield and yield attributes
Loading...
Files
Date
1999
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Department Of Olericulture, College Of Horticulture, Vellanikkara
Abstract
The research project 'Genetic. variability in bottle gourd (Lagenaria
siceraria [Mol.] Standl.) in relation to yield and yield attributes' was earned out in
the College of Horticulture, Kerala Agricultural University, Vellanikkara, Thrissur
during the period 1998-99. The major objectives of the study were to genetically
catalogue the available germplasm and to study the genetic variability, divergence,
heritability, genetic gain and correlation of different traits with yield. Twenty eight
accessions collected from different parts of the country were grown in randomised
block design with two replications.
The 28 accessions were catalogued based on the descriptor for bottle
gourd. Significant differences for the characters vine length, number of primary
branches, days to first female flower opening, nodes to first female flower, sex
ratio, number of fruits per plant, fruit yield per plant, length of fruit, girth of fruit,
100 seed weight, number of seeds per fruit and crude fibre content were noticed
among the accessions. The accession LS 14 was found to be the highest yielding
and accession LS 23 was found to be the earliest flowering.
Highest genotypic coefficient of variation and phenotypic coefficient of
variation was observed for number of fruits per plant. High heritability coupled
with genetic gain was noted for vine length, number of primary branches, nodes to
first female flower, length of fruit, girth of fruit and number of seeds per fruit.
Yield was found to be significantly and positively correlated with duration of crop
and number of fruits per plant. The 28 accessions were grouped into eight clusters
and no parallelism between geographical d~stribution and genetic diversity was
noted.
A selection model was formulated consisting of the characters yield per
plant, fruit set percentage and duration of crop. Accession LS 14 was identified as
the most superior one followed by accessions LS 23, LS 8 and LS 4.
Description
PG
Keywords
null
Citation
171448