QTL mapping: insights into genomic regions governing component traits of yield under combined heat and drought stress in wheat
Karthik Kumar Manjunath,
Hari Krishna,
Narayana Bhat Devate
и другие.
Frontiers in Genetics,
Год журнала:
2024,
Номер
14
Опубликована: Янв. 10, 2024
Drought
and
heat
frequently
co-occur
during
crop
growth
leading
to
devastating
yield
loss.
The
knowledge
of
the
genetic
loci
governing
component
traits
under
combined
drought
stress
is
essential
for
enhancing
climate
resilience.
present
study
employed
a
mapping
population
180
recombinant
inbred
lines
(RILs)
derived
from
cross
between
GW322
KAUZ
identify
quantitative
trait
(QTLs)
conditions.
Phenotypic
evaluation
was
conducted
across
two
consecutive
seasons
(2021–2022
2022–2023)
late
sown
irrigation
(LSIR)
restricted
(LSRI)
conditions
at
Indian
Council
Agricultural
Research
Institute–Indian
Institute
(ICAR-IARI),
New
Delhi.
Various
physiological
agronomic
importance
were
measured.
Genotyping
carried
out
with
35K
SNP
Axiom
breeder’s
genotyping
array.
linkage
map
spanned
length
6769.45
cM,
ranging
2.28
cM/marker
in
1A
14.21
5D.
A
total
35
QTLs
identified
14
chromosomes
6B
containing
highest
(seven)
number
QTLs.
Out
QTLs,
16
major
explaining
phenotypic
variance
greater
than
10%.
eight
stable
along
hotspots
on
5B.
Five
associated
thousand-grain
weight
(TGW),
normalized
difference
vegetation
index
(NDVI),
plant
height
(PH)
successfully
validated.
Candidate
genes
encoding
antioxidant
enzymes,
transcription
factors,
growth-related
proteins
QTL
regions.
In
silico
expression
analysis
highlighted
higher
transcripts
TraesCS2D02G021000.1,
TraesCS2D02G031000,
TraesCS6A02G247900,
TraesCS6B02G421700
These
findings
contribute
deeper
understanding
architecture
underlying
tolerance
wheat,
providing
valuable
insights
wheat
improvement
strategies
changing
climatic
Язык: Английский
Functional phenomics and genomics: Unravelling heat stress responses in wheat
Plant Stress,
Год журнала:
2024,
Номер
unknown, С. 100601 - 100601
Опубликована: Сен. 1, 2024
Язык: Английский
Analyzing Wheat Production in Jordan: The Role of Population Dynamics, Climate Variability, and GIS-Based Projections
Sustainability,
Год журнала:
2025,
Номер
17(8), С. 3493 - 3493
Опубликована: Апрель 14, 2025
Wheat,
a
cornerstone
of
Jordan’s
food
security
and
agricultural
economy,
has
experienced
fluctuating
production
dynamics.
Population
growth,
climate
variability,
the
gradual
integration
advanced
farming
technologies
drive
these
fluctuations.
As
population
expands,
demand
for
wheat
naturally
escalates,
placing
increased
pressure
on
local
capabilities.
This
study
aimed
to
analyze
impact
demographic
(population)
climatic
parameters
rainfall
maximum
minimum
temperature
in
Jordan
from
1995
2022.
Geographic
Information
Systems
(GIS)
techniques
statistical
analysis
methods,
specifically
utilizing
Geographically
Weighted
Regression
(GWR),
were
used
relationship
between
within
specific
periods;
this
revealed
an
inverse
coefficient
determination
with
(R2
=
−0.56,
−0.78
−0.89)
north,
middle,
south
regions
Jordan,
respectively.
A
direct
is
explored,
especially
southern
areas
0.63
0.81),
Generally,
accounted
(32.26%)
variations
production,
while
contributed
(30.74%).
The
effect
was
less
significant,
explaining
(13.24%).
GWR
tests
confirmed
factors’
independence,
indicating
each’s
production.
However,
total
decrease
2022
comprised
approximately
34.19%
reduction
shown
2022,
recommends
conducting
further
research
delve
deeper
into
interplay
changes,
practices,
exploring
potential
developing
sustainable
strategies
mitigate
decline
ensure
Jordan.
Язык: Английский
Unravelling the Genetic Basis of Moisture Deficit Stress Tolerance in Wheat for Seedling Vigour-Related Traits and Root Traits Using Genome-Wide Association Study
Genes,
Год журнала:
2023,
Номер
14(10), С. 1902 - 1902
Опубликована: Сен. 30, 2023
A
key
abiotic
stress
that
negatively
affects
seed
germination,
plant
development,
and
crop
yield
is
moisture
deficit
stress.
Achieving
higher
vigour
uniform
germination
under
conditions
essential
for
establishment
productivity
to
enhance
the
yield.
Hence,
revealing
wheat's
capacity
withstand
during
early
growth
stages
fundamental
in
improving
its
overall
performance.
However,
genetic
regulation
of
tolerance
phase
remains
largely
unexplored.
In
this
study,
a
total
193
wheat
genotypes
were
subjected
simulated
using
PEG-6000
(-0.4
MPa)
stage.
The
induced
significantly
reduced
various
seedling-vigour-related
traits.
regions
linked
these
traits
found
genome-wide
association
study
(GWAS).
analysis
identified
235
MTAs
with
significance
-log10(p)
value
>4.
After
applying
Bonferroni
correction,
47
unique
single
nucleotide
polymorphisms
(SNPs)
are
candidate
genes
important
trait
interest.
current
emphasises
effectiveness
studies
(GWAS)
identifying
promising
genes,
seedling
root
traits,
offering
information
development
cultivars
tolerant
Язык: Английский
Food and Nutritional Security Under the Changing Climate: Understanding the Established and Indeterminate Factors
Advances in Science, Technology & Innovation/Advances in science, technology & innovation,
Год журнала:
2024,
Номер
unknown, С. 25 - 38
Опубликована: Янв. 1, 2024
Язык: Английский
Wild relatives and new breeding techniques sustain Fe and Zn biofortified crop farming systems under climate change and emergencies
Cogent Food & Agriculture,
Год журнала:
2024,
Номер
10(1)
Опубликована: Май 31, 2024
There
are
about
two
billion
people
suffered
malnourished
because
of
the
failing
global
food
system,
historical
emphasis
on
crop
yield,
notably
lacking
in
Fe
and
Zn.
Breeding
biofortified
staple
crops
is
a
sustainable
strategy
to
tackle
this
issue,
but
it
poses
challenges,
primarily
due
limited
genetic
resources
modern
breeding
populations.
Simultaneously,
climate
change,
marked
by
rising
temperatures
increased
atmospheric
CO2,
threatens
stability
micronutrient
concentrations
harvest
organs,
such
as
gain,
fruit,
root,
tubers
etc.
The
rich
biodiversity
wild
relatives,
including
species,
landraces,
natives,
offers
promising
response
change.
Advanced
technologies,
like
marker-assisted
selection
breeding,
genomic
selection,
gene
editing
provide
opportunities
enhance
Zn
crops,
rice,
maize,
wheat,
cassava,
Genome-wide
association
studies
population
genetics
research
will
help
found
qualitative
genes
major-effect
homeostasis
for
Zn,
which
purpose
uncover
molecular
mechanisms
governing
regulation
crops.
Despite
these
strides,
enhancing
bioavailability
human,
requires
considering
absorption
enhancers
inhibitors,
rather
than
solely
increasing
concentrations.
Absorption
testing
systems
Caco-2
cell
line,
elucidating
meta-process
human
body
should
be
considered
when
through
traditional
breeding.
Язык: Английский