Effect of salt stress on morpho-physiology vegetative growth and yield of rice

Selection
of
salt
tolerant
rice
varieties
has
a
huge
impact
on
global
food
supply
chain.
Five
Malaysian
rice
(
Oryza
sativa
L.)
varieties,
MR33,
MR52,
MR21
1,
MR219
and
MR232
were
tested
in
pot
experiment
under
dif
ferent
salinity
levels
for
their
response
in
term
of
vegetative
growth,
physiological
activities,
development
of
yield
components
and
grain
yield.
Rice
varieties,
BRRI
dhan29
and
IR20
were
used
as
a
salt-sensitive
-1
control
and
Pokkali
was
used
as
a
salt-tolerant
control.
Three
dif
ferent
salinity
levels
viz.
4,
8,
and
12
dS
m
were
used
in
a
randomized
complete
block
design
with
four
replications
under
glass
house
conditions.
T
wo
Malaysia
varieties,
MR21
1
and
MR232
performed
better
in
terms
of
vegetative
growth
(plant
height,
leaf
-1
-1
-1
area
plant
,
number
of
tillers
plant
,
dry
matter
accumulation
plant
),
photosynthetic
rate,
transpiration
rate,
yield
components,
grain
yield
and
injury
symptoms.
While,
MR33,
MR52
and
MR219
verities
were
able
to
withstand
salinity
stress
over
salt-sensitive
control,
BRRI
dhan29
and
IR20