Abstract:
A pot experiment was conducted in the net house of the Department of
Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka1207,
during the months of November 2018 to March 2019 to observe the
performances of ten chilli genotypes under three different drought treatments.
Two factorial experiment included 10 chilli genotypes viz. G
1
(Surjamukhi IMP), G
3
(HP 1029), G
4
xiv
(SRCO 1), G
5
(SRCO 2), G
6
(SRCO 9),
G
7
(SRCO 13), G
8
(CO 613), G
9
(SRCO 5) and G
10
(Hot morich of Bogura)
and three drought treatments viz. T
1
(Control), T
2
(20 days withholding of
water) and T
3
(40 days withholding of water) were outlined in Completely
Randomized Design (CRD) with three replications. The results showed that
both, the different chilli genotypes and drought treatments had significant
influence independently and also in interaction on agromorphogenic,
physiological and nutritional traits of chilli plant. Among interactions of chilli
genotypes and drought treatments, the tallest plant (117.33 cm) was observed
in G
10
T
1
whereas the shortest plant (26.00 cm) was found from G
7
, maximum
number of fruits (93.67 /plant) were obtained from G
10
T
1
whereas minimum
number of fruits (0.00 /plant) was found in G
8
T
3
, Maximum yield (0.12
kg/plant) was obtained from while minimum yield (0.00 kg/plant) from G
8
,
Maximum proline content in chilli (684.94 µg/g) was obtained from G
2
while
minimum (227.19 µg/g) from G
2
T
1
and the highest % Brix content as obtained
from G
3
T
2
(3.63 %), G
3
T
3
(3.63 %) and G
5
T
3
(3.63 %) whereas the lowest %
Brix was found in G
4
T
1
(1.00 %) and G
1
T
1
(1.00 %). Almost all traits
responded negatively as the drought level increased except days to first
flowering, maturity, proline and brix (%). Considering the yield and yield
contributing characters, genotype G
1
, G
2
and G
8
showed tolerance at moderate
drought stress and G
1
and G
2
showed tolerance at prolonged and severe drought
stress. Regarding nutritional traits, G
4
showed tolerance at moderate drought
stress period and G
1
and G
4
showed tolerance at prolonged and severe drought
stress. These genotypes could be recommended to the farmers for cultivation in
the drought prone areas of Bangladesh and also could be used in future
hybridization or other gene transfer programs.
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 SCIENCE
IN
GENETICS AND PLANT BREEDING
