Abstract:
One of the most exaggerated factors which are liable for diminishing crop yield is
abiotic stress that comes up as a potent intimidation to worldwide food security in
proceeding decades. Soil waterlogging in cultivated areas is a common abiotic stress
which has severe influences on soybean composition and production worldwide.
Focusing on that issue, an experiment was carried out at Sher-e-Bangla Agricultural
University, during the month from August to November 2019 to screen out the
waterlogging tolerance and yield performances of selected soybean genotypes. The
experiment was laid out in a completely randomized design with three replications.
The experiment consisted of 2 water level conditions (control and waterlogging) and
12 genotypes (Sohag, BARI Soybean-5, BINAsoybean-1, BINAsoybean-2,
BINAsoybean-3, BINAsoybean-5, BINAsoybean-6, SGB-1, SGB-3, SGB-4, SGB-5,
GC-840). On 15
th
days after sowing (DAS), plants were revealed to waterlogging for
12 days period. The waterlogging stress reduced plant height, relative water content
(RWC), above-ground fresh weight plant
-1
, above-ground dry weight plant
, SPAD
value, leaf area plant
-1
, number of leaves plant
iii
-1
, number of branches plant
, number
of pods plant
-1
, number of seeds pod
-1
, 100-seed weight, seed yield plant
, stover
yield, biological yield, whereas increased mortality rate and electrolyte leakage. The
waterlogged plants showed delayed flowering and maturity than their respective
control plants. It can be concluded that waterlogging remarkably declined the growth
and yield of all the soybean genotypes in comparison with the control plants. Among
the 12 genotypes Sohag, BARI Soybean-5, GC-840, BINAsoybean-1, BINAsoybean2
performed
better
than
the
other
genotypes
under
waterlogging.
These
genotypes
showed
a
greater
number
of
adventitious
roots
in
their
stem
under
waterlogging
stress,
which
probably
helps
the
plants
to
thrive
under
waterlogging
condition.
Description:
A Thesis
Submitted to the Department of Agronomy, Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka in partial
fulfillment of the requirement for the degree of
MASTER OF SCIENCE (MS)
IN
AGRONOMY
