Abstract:
The present investigation with seventeen genotypes of bottle gourd was conducted
during Kharif season (March to September) in 2019 at the experimental field of Shere-Bangla
Agricultural
University.
The
experiment
laid
out
in
Randomized
Complete
Block
Design
(RCBD)
with
three
replications.
The
main
objective
of
the
experiment
was
to evaluate the genotypes of bottle gourd in relation to yield and yield
contributing characters. This helped to screen out the suitable bottle gourd genotypes
for future breeding programme. Analysis of variance showed that mean sum of
squares among genotypes was significant for all the traits. PCV were higher than the
GCV for all the characters studied. Number of seed per fruit (98.06), number of
primary branches (90.09), fruit length (87.57) and fruit weight (86.84) showed high
heritability with high genetic advance. Correlation analysis revealed that fruit yield
per plant showed the high positive and significant correlation with number of fruit
per plant (g= 0.792, p= 0.797), fruit weight (g= 0.808, p= 0.713) and seed thickness
(g= 0.655, p= 0.388) at both genotypic and phenotypic level. The path coefficient
analysis revealed that positive and direct effect of fruit yield on days to first male
flowering (0.006), days to first fruit harvest (0.067), number of fruit per plant
(0.680), fruit length (0.043), fruit diameter (0.009) and fruit weight (0.602). The
highest intra cluster distance was found in cluster-II (1.547). Among five clusters the
highest inter cluster distance was observed between cluster-II and cluster-III (14.771)
and the lowest between cluster-III and cluster-IV (4.919).Considering diversity
pattern, genetic status and other agronomic performance, genotype from cluster I, II
and V might be considered better parents for crop improvement programme.
Genotypes BG- Diana, BG- 6818, BG- Arosh, BG- 6309, BG- Tafsi and BG-6527
are recommended to use as parent in hybridization programme as they have variation
in characters like days to first fruit harvest, number of fruits per plant, fruit weight,
number of seed per fruit and fruit yield per plant.
Description:
A Thesis
submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka-1207,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
GENETICS AND PLANT BREEDING
