SCREENING OF SALT TOLERANT GENOTYPES OF SOYBEAN
Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF AGRONOMY
Abstract
An experiment was carried out in the central laboratory of Sher-e-Bangla
Agricultural University, Dhaka during January to March 2017 for screening salt
tolerant genotypes of soybean. The experiment consisted of 15 soybean genotypes
viz, V
1
(Shohagh), V
(BD-2326), V
6
2
(BARI soybean 5), V
(BD-2337), V
7
(BD-2346), V
ii
3
(BARI soybean 6), V
8
(BD-2349), V
9
4
(BD-2324), V
(BD-2351), V
(BD2352),
V
11
(BD-2353), V
12
(BD-9402), V
13
(BD-9418), V
14
10
(BD-9420) and V
(BD-9426). Seeds of 15 genotypes were collected from Bangladesh Agricultural
Research Institute (BARI). The performance of the genotypes was tested under 5
levels of salinity viz. Control (No salt), 5, 10, 15 and 20 dSm
-1
. The experiment
was laid out in Completely Randomized Design (CRD) with five replications.
There are significant differences observed among the different levels of salinity in
case of almost all the parameters. For all the soybean genotypes used in the study,
the highest seedling emergence rate was observed under control condition where
no salinity stress was imposed. Salinity stress both at 15 dSm
-1
and 20 dSm
NaCl
significantly reduced the seedling emergence rate for all soybean genotypes. The
highest germination rate (85.88%) was found from V
(BARI soybean 6) followed
by V
2
(BARI soybean 5) and V
9
3
(BD-2351) which were 83.64 and 69.98%
respectively at control and the lowest germination rate was found from V
(BD2326)
(18.97%) followed by V
11
(BD-2353) (24.09%), V
(BD-2352) (30.10%)
and V
14
(BD-9420) (29.65%) at 20 dSm
-1
10
. Accordingly, more or less similar trend
was found on shoot length, root length, fresh weight plant
-1
-1
5
, dry weight plant
,
relative water content, turgid weight, water retention capacity, water saturation
deficit and vigour index. Among 15 soybean genotypes V
(BARI soybean 5) and V
9
3
(BARI soybean 6), V
(BD-2351) are salt tolerant which are attributed to
higher germination rate, shoot length, root length, dry weight, relative water
content, water retention capacity and vigour index and rest of the soybean
genotypes were found to be sensitive to salt stress.
Description
A Thesis
Submitted to the Department of Agronomy,
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
Keywords
SCREENING OF SALT TOLERANT,, GENOTYPES OF SOYBEAN