Year 2014http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/28212024-03-28T16:47:57Z2024-03-28T16:47:57ZINFLUENCE OF SOWING TIME AND PHOSPHORUS ON THE GROWTH AND YIELD PERFORMANCE OF CUCUMBERAKTER, SUFIAhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/29332019-10-31T06:40:42Z2014-12-01T00:00:00ZINFLUENCE OF SOWING TIME AND PHOSPHORUS ON THE GROWTH AND YIELD PERFORMANCE OF CUCUMBER
AKTER, SUFIA
The study was conducted at the Horticultural Farm of Sher-e-Bangla Agricultural University,
Dhaka during the period from March to July, 2013. The experiment consisted with two
factors. Factor A: Sowing time
1
: Sowing on 20 March, T
2
: 5 April, T
: 20 April,
T
4
: 5 May and also Factor B: Phosphorus
0
: 0 kg P
2
O
5
/ha
: 30 kg
P
2
O
5
/ha, P
2
: 60 kg P
2
O
5
/ha and P
3
: 90 kg P
2
O
/ha. The present study was laid out in a
Randomized Complete Block Design (
2
5
treatment, whereas the lowest was recorded from T
treatment.
On the other hand, the maximum number of fruits per plant
treatment, while the lowest was
recorded from P
0
2
2
P
2
, while the lowest were
treatment combination, respectively. The highest benefit cost ratio
2
P
2
and the lowest
4
P
treatment combination. In the present study,
combination of T
2
P
2
0
showed more profitable than rest of the combinations in cucumber
cultivation.
4
3
1
4
P
0
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE
HORTICULTURE
SEMESTER: JULY-DECEMBER, 2014
2014-12-01T00:00:00ZASSESSMENT OF SALINITY TOLERANCE CAPACITY OF PROMISING TOMATO GENOTYPESMONIRUZZAMAN, MOHAMMEDhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/29322019-10-31T06:37:21Z2014-12-01T00:00:00ZASSESSMENT OF SALINITY TOLERANCE CAPACITY OF PROMISING TOMATO GENOTYPES
MONIRUZZAMAN, MOHAMMED
An experiment on tomato was conducted at the Net House Premises of Soil Science
Division, Bangladesh Agricultural Research Institute; Gazipur during the winter
season from Nov.2013 - Feb. 2014. The major objective of the study was to assess the
salinity tolerance ability of promising tomato genotypes for the identification of salt
tolerant ones. Six levels
-1
2
3
1
3
gave the highest fruit yield
equivalent to
55.25 t ha
-1
2
concentration was highest for the V
as 14.56, 3.09, 0.25 and 199.75
mol m
-2
s
-1
, respectively. Potassium: sodium ratio for V
3
1
, V
2
and V
was 3.43, 3.55 and
3.72, respectively, which indicates their adaptability under salt stressed situation to a
considerable extent, where the performance of V
3
3
was slightly better over other two
varieties. Increasing levels of salinity resulted in lower SPAD values in leaves
regardless of genotype. Photosynthetic rate, transpiration rate, intercellular CO
concentration showed significant negative linear relationships with electrical
conductivity of the irrigation water. Sodium salt stress showed antagonistic effect on
the absorption N, P, K, Mg and S while it was synergistic for Ca although root Ca
concentration showed declining trend. Considering all studied traits and yield
potentiality, BARI hybrid tomato 8 can be regarded as salt tolerant to some extent.
-1
2
A Thesis
Submitted to the Department of Horticulture,
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE
HORTICULTURE
SEMESTER: JULY - DECEMBER, 2014
2014-12-01T00:00:00ZEFFECT OF SPERMIDINE ON PHYSIOLOGY AND ANTIOXIDANTS UNDER SALINITY STRESS IN ONION SEEDLINGSISLAM, TANJINAhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/29312019-10-31T06:33:55Z2014-12-01T00:00:00ZEFFECT OF SPERMIDINE ON PHYSIOLOGY AND ANTIOXIDANTS UNDER SALINITY STRESS IN ONION SEEDLINGS
ISLAM, TANJINA
In this study, protective role of spermidine (Spd) on NaCl induced oxidative damage in
onion seedlings was investigated for better understanding the salinity tolerance mechanism.
Onion seedlings were subjected to salinity stress of 16 dSm
-1
and 100 µM of Spd were
sprayed twice daily. Data were analyzed on Chlorophyll (Chl), Carotenoid (Car), Leaf
water, Proline, Reactive Oxygen Species (ROS), Methylglyoxal (MG), lipid peroxidation as
Malondialdehyde (MDA), Polyamines, Glutathione and Ascobate related antioxidant
enzymes and Glyoxalase (Gly) systems. Salinity reduced the Chl, Car and Relative Water
Content (RWC) of leaves where foliar spray of Spd reduced the loss of these contents.
Contrary, Spd increased the proline contents in salinity stressed seedlings. The contents of
O
2
•-
, H
2
O
2,
MDA were decreased in the Spd supplied leaves. However, Spd effectively
maintained the ROS and MDA at first 3 day of stress, while Glutathion (GSH), Ascorbic
acid (ASA) and their redox homeostasis were maintained higher throughout the study
period. Higher increments of Polyamine Oxidase (PAO) and Diamine Oxidase (DAO)
activities upto 3 day suggested its protective role via H
2
O
2
signal transduction pathway. In
presence of Spd, higher activities of superoxide dismutase (SOD), Ascorbate Peroxidase
(APX) and Monodehydroascorbate reductase (MDHAR) over salinity during the study
period suggested its ROS scavenging role. However, higher activities of Glutathione
Peroxidase (GPX) and Dehydroascorbatereductase (DHAR) by Spd indicated maintenance
of ROS and ASA, respectively. Similarly, Spd increased activities of Gly-I and Gly-II upto
3 day of stress concurrently with lower MG suggested the improvement of MG
detoxification system. Higher activity of Glutathione-S-Transferase (GST) by Spd in saline
stress seedling might involve in protein stabilization and detoxification role in onion plant.
Since GST activity increased strongly in presence or absence of Spd under salinity, attempt
was taken to test its accumulation. Therefore, from different plant parts it was found that
both root and bulb showed higher GST activity. However, onion bulb was chosen for easy
availability. In chromatographic separation of onion bulb, three component GSTs were
separated among which one GST eluted at 120 mM KCl was found to be accumulated under
salinity in western blotting analysis. Taken together, in short term salinity, foliar spray of
Spd might be useful to reduce the oxidative damage through increment of antioxidants and
glyoxalase system.
A Thesis
Submitted to the Department of Horticulture
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
HORTICULTURE
SEMESTER: JULY-DECEMBER, 2014
2014-12-01T00:00:00ZEFFECT OF BULB SIZE AND DEPTH OF PLANTING ON GROWTH, FLOWERING AND YIELD OF TUBEROSESULTANA, SHABIHAhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/29302019-10-31T06:29:32Z2014-12-01T00:00:00ZEFFECT OF BULB SIZE AND DEPTH OF PLANTING ON GROWTH, FLOWERING AND YIELD OF TUBEROSE
SULTANA, SHABIHA
The study was conducted at the Horticultural Farm of Sher-e-Bangla
Agricultural University, Dhaka during the period from April 2013 to February
2014.The experiment consisted of two factors. Factor A: Three levels of bulb
size: B
1
-Small size, B
2
-Medium size, B
-Large size and Factor B: Three levels
of depth of planting: D
1
-3cm, D
2
3
-5cm and D
-7cm respectively.The experiment
was laid out in a Randomized Complete Block Design with three replications.
Bulb size and depth of planting showed significant variations on most of the
parameters. In case of bulb size highest yield of spike
3
3
and the lowest spike
. In case of depth of planting, the highest yield of spike
1
and lowest spike
1
2
. For combined effect highest yield
of spike
and the
lowest spike
1
D
. The highest
benefit cost ratio (
3
D
2
1
3
D
and lowest
.
So large size bulb planting in 5cm depth was found best for growth, flowering
and yield of tuberose.
2
1
D
1
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 (MS)
HORTICULTURE
SEMESTER: JULY-DECEMBER, 2014
2014-12-01T00:00:00Z