Abstract:
A pot experiment was conducted at the net house of the Department of Agricultural
Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, during Boro rice
cropping season of the year of 2017-2018 to investigate the role of magnesium to
alleviate damaging effect of salt stress on development and yield performance of rice
plant (Oryza sativa L.). The experiment was conducted using two salinity levels with
magnesium viz. S
0
= Control, S
1
= 4 dSm
-1
salt, S
1
Mg
1
= 4 dSm
-1
salt + 80 ppm
magnesium, S
1
Mg
2
= 4 dSm
-1
salt + 160 ppm magnesium, S
2
= 6 dSm
=
6 dSm
-1
salt + 80 ppm magnesium, S
2
Mg
2
= 6 dSm
-1
salt + 160 ppm magnesium. The
experiment was set in Randomized Complete Block Design (RCBD) having one
factor with three replications. The results on the effect of morphological and yield
contributing characters indicated that plant height; numbers of tillers, leaf length, leaf
breath, and SPAD value, effective tiller, number of non effective tiller, panicle length
and filled grain, unfilled grain, thousand seed weight grain yield were influenced by
salinity and magnesium. Among the 3 salinity level (0,4 & 6dSm
-1
), the damaging
effect was found more in higher stress (6dSm
-1
salt).But magnesium supplementation
along with salt greatly reduced the damaging effect of salt. Out of 2 level of
magnesium, 160 ppm magnesium
Significantly reduced the damaging effect of salt.
Therefore, for cultivation of BRRI dhan67 under the saline condition magnesium
application could be a better practice for getting higher yield.
.
-1
salt, S
2
Mg
1
Description:
A Thesis
Submitted to the Department of Agricultural Botany
Sher-e-Bangla Agricultural University, Dhaka, in partial
fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE/2018
