Abstract:
An experiment was conducted with 17 F hybrids of pointed gourd obtained by
crossing a male parent to 17 female parents at the experimental farm of Regional
Agricultural Research Station, Ishurdi of Bangladesh Agricultural Research Institute.
Significant differenecs were observed among the parents and hybrids for most of the
34 characters studied except fruit width. A top cross analysis was performed to
evaluate the F1 s. The average performances of the top crosses were lower than that of
the parents for length of internode at first harvest, days to first flowering, fruit
development period and harvest interval. l)ifferent parents showed superiority in
respect of different characters. The parent PGO09 was superior female parent giving
higher fruit yield per harvest (g). The parent 116006 had the highest breeding value in
respect of yield per harvest (g) followed by l'0009. P6006 was also the best parent
for number of fruits per plant, number of fruits per harvest, harvest length and pulp:
seed ratio. Both positive and negative heterosis was found for different characters in
different hybrids. Highly significant and positive heterosis was found in hybrid
PCi02IXM2 for fruit weight, pulp weight, dry mailer content and yield per harvest.
While, significant and negative heterosis for early first flowering was observed in
PCi020XM2, for first flower bearing node number in PG007XM2. These hybrids
might be used in future breeding program to exploit heterosis for better yield in
pointed gourd.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCJENCE
IN
GENETICS AND PLANT BREEDING
SEMESTER: JANUARY— JUNE, 2006
