Frontiers in Life Sciences and Related Technologies,
Год журнала:
2024,
Номер
5(1), С. 15 - 23
Опубликована: Апрель 3, 2024
During
its
development
cycle,
lack
of
water
is
one
the
factors
reducing
plant
growth
and
yields,
in
world's
arid
regions.
The
identification
indices
that
characterize
most
tolerant
genotypes
to
drought
very
useful
since
it
allows
us
evaluate
tolerance
large
varieties
collections
within
a
short
early
stage.
This
study
aimed
identify
efficient
indicators
evaluate,
from
stage
development,
germination
parameters
would
be
correlated
with
field.
If
such
correlations
were
identified,
possible
screen
dozens
laboratory
ones
before
moving
into
To
attain
this
objective,
two
tests
carried
out:
first
was
realized
assess
some
(germination
rate,
root
length,
number,
etc.)
sixteen
North
African
barley
(Algerians,
Tunisians,
Egyptians)
at
stage,
under
polyethylene
glycol
(PEG-6000)
induced
stress.
second
test
out
field
measure
grain
yield
same
genotypes,
favorable
limited
conditions.
revealed
significant
differences
between
lengths
(RL)
different
each
regime
treatments
(control
PEG-6000
solution).
obtained
result
showed
superiority
Egyptian
especially
stress
conditions
by
PEG-6000.
trial
also
yields
both
regimes
(stressful
non-stressful
regimes)
pointed
high
performance
majority
genotypes.
calculated
[(STI),
(SSI),
(YSI),
(TOL)]
variable
depending
on
index
used
concluded
STI
YSI
are
best
compared
others.
Among
parameters,
only
length
PEG
positively
yield,
Therefore,
use
parameter
select,
an
drought-tolerant
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Апрель 9, 2025
Chickpea
(Cicer
arietinum
L.),
through
a
series
of
morphological,
physiological,
biochemical,
and
molecular
changes,
would
tolerate
abiotic
stresses
such
as
water
deficiency.
Accordingly,
two
separate
experiments
were
conducted
to
investigate
phytochemical
morphophysiological
traits
various
candidate
chickpea
genotypes
in
response
drought
stress.
In
the
first
experiment,
morphological
evaluated
by
maintaining
pots
at
70%
holding
capacity
(WHC)
applying
gradual
stress
(to
50%
25%
WHC)
four-
six-week-old
seedlings.
second
stressed
plants
exposed
progressive
for
biochemical
measurements,
while
control
irrigated
WHC.
The
highest
photosynthetic
use
efficiency
(9.94
µmolCo2/µmolH2o)
under
belonged
MCC552
genotype,
followed
MCC696
genotype
with
7.25.
chlorophyll
content
(SCMR)
was
recorded
MCC537
(0.99
µg/cm²),
MCC352
(0.89
µg/cm²).
deepest
root
depth
(70.83
cm)
observed
MCC537,
(69.36
cm).
Root
diameter
increase
conditions
compared
normal
only
MCC552.
However,
leaf
area
higher
conditions.
SCMR(μg/cm²)
(1.48),
MCC696(1.32)
MCC80
(1.31).
proline
level
MCC552,
which
increased
severity.
lowest
Malondialdehyde
genotypes,
catalase
found
MCC696,
Based
on
depth,
length,
diameter,
area,
well
phytochemicals
traits,
especially
proline,
identified
most
tolerant
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Сен. 26, 2024
Background
In
recent
years,
more
severe
droughts
have
occurred
frequently
in
many
parts
of
the
world,
drought
stress
is
primary
abiotic
factor
restricting
growth
and
quality
flue-cured
tobacco.
Therefore,
screening
dryland
cultivation-compatible
tobacco
varieties
will
help
reduce
negative
impact
drought.
Methods
Tobacco
were
selected:
Qinyan
96
(Q96),
Zhongyan
101
(Z101),
Yunyan
87
(Y87),
116
(Y116).
A
pot
experiment
was
conducted
with
four
water
supply
gradients:
sufficient,
mild
stress,
moderate
stress.
The
aim
to
analyze
inter-varietal
differences
agronomic
traits,
photosynthetic
reactive
oxygen
species
(ROS)
metabolism,
antioxidant
enzyme
system
under
Additionally,
resistance
evaluated
using
principal
component
analysis
membership
function
analysis.
Results
results
showed
that
intensification
inhibited
seedling
development
across
all
varieties,
Q96
showing
least
decrease
Y116
greatest.
With
increasing
degree
rates
(P
n
),
transpiration
rate
(T
r
stomatal
conduction
(G
s
)
shown
gradually
decreasing
trends,
while
substomatal
cavity
CO
2
concentration
(C
i
a
growing
trend.
Severe
corresponded
lower
chlorophyll
content
decreased
maximal
photochemical
efficiency
(F
v
/F
m
photosystem
II
(PSII),
quenching
coefficient
(qP)
steady-state
non-photochemical
(NPQ)
increased.
Increased
led
significantly
higher
malondialdehyde
(MDA)
accumulation
seedlings.
activities
in,
Q96,
Z101,
Y87
increased
whereas
activity.
Conclusion
ranking
among
as
follows:
>
Z101
Y116.
promising
drought-tolerant
breeding
material
can
be
used
reference
for
cultivation
Agronomy,
Год журнала:
2023,
Номер
13(12), С. 3033 - 3033
Опубликована: Дек. 11, 2023
Foxtail
millet
(Setaria
italica
L.)
is
an
important
crop
grown
worldwide
as
a
food
and
fodder
owing
to
its
potential
nutritional
feed
values.
High-efficiency
herbicide
varieties
crucial
achieving
efficient
weeding
ensuring
successful
foxtail
production.
Herbicides
affect
several
morphological
physiological
indicators
of
millet.
In
this
study
we
aimed
evaluate
the
damage
caused
by
herbicides,
improve
their
effectiveness,
select
that
accurately
reflect
resistance
in
Jingu
21,
which
has
largest
planting
area
Shanxi
province
even
whole
China,
selected
experimental
material
be
sown
field
2022.
A
total
31
herbicides
were
applied,
21
traits,
including
morphological,
physiological,
yield-component
measured
assess
resistance.
Principal
component
analysis
was
employed
transform
these
conventional
traits
into
seven
independent
comprehensive
indexes.
These
indexes
screened
using
regression
analysis,
resulting
selection
following
indicators:
surface
second
leaf
from
top,
peroxidase
activity,
catalase
malondialdehyde
content,
chlorophyll
(a
+
b),
grain
weight
per
ear,
yield.
Through
membership
function
cluster
analyses,
divided
five
categories:
extremely
weakly
resistant,
moderately
strongly
resistant.
exhibited
strong
lactofen,
butachlor,
anilofos.
After
investigation
effectiveness
it
found
eight
had
good
effects.
Sustainability,
Год журнала:
2024,
Номер
16(17), С. 7366 - 7366
Опубликована: Авг. 27, 2024
The
frequent
occurrence
of
localized
and
seasonal
droughts
has
caused
severe
economic
losses
in
maize
production
South
China.
To
promote
sustainable
production,
selecting
breeding
drought-tolerant
varieties
is
vital
for
addressing
water
scarcity.
Drought
stress
affects
all
aspects
crop
morphological
performance.
In
this
study,
the
performance
285
inbred
lines
under
drought
was
investigated
using
D-value
analysis,
correlation
principal
component
cluster
analysis
stepwise
regression
analysis.
All
indicators
were
significantly
different
regular
treatment
compared
to
treatment.
Specifically,
survival
rate,
root
fresh
weight,
dry
plant
root/crown
ratio,
weight
used
as
drought-tolerance
evaluation.
Furthermore,
line
CML323
drought-sensitive
CB2-49-1
screened
by
comprehensively
evaluating
D
values.
exhibits
higher
leaf
relative
content,
chlorophyll
proline
ascorbate
peroxidase
activity
while
having
lower
malondialdehyde
consequently
demonstrating
excellent
tolerance.
This
study
provides
valuable
insights
into
reference
materials
varieties.
Annals of Applied Biology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 28, 2024
Abstract
Plants
exposed
to
drought
not
only
have
cope
with
a
shortage
of
water,
but
also
simultaneous
decrease
in
nutrient
availability.
In
this
greenhouse
experiment,
the
responses
antioxidants
and
key
metabolites
2
or
4
days
water
limitation
immediately
prior
harvest
were
compared
effect
continued
supply
lettuce
leaves.
Water
led
faster
increase
stress
intensity
than
limitation.
While
moderate
slight
antioxidant
compounds
studied,
there
was
concomitant
sharp
starch
content.
Under
limitation,
an
content
ascorbic
acid,
proportion
reduced
acid
phenolic
compounds,
flavonoids,
soluble
sugars
observed
mild
phase
stress.
These
results
suggest
that
reducing
availability
shortly
before
could
be
suitable
means
improving
nutritional
value
crops
through
cultivation
practices
as
opposed
breeding.
