Heterotic potential and combining ability of Coffea arabica L
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 7, 2025
The
use
of
hybrid
vigor
or
heterosis
in
Coffea
arabica
L.
cultivation
has
gradually
been
commercially
explored
worldwide
since
research
evolved
understanding
this
phenomenon
and
the
vegetative
propagation
techniques
male-sterility
making
its
viable.
Additionally,
coffee
producers
adopting
technology
have
continuously
increased.
Therefore,
we
studied
existence
magnitude
estimate
combining
ability
parents
bi-parental
crosses.
experiment
was
installed
2019
using
a
randomized
block
design
with
three
replications,
experimental
plot
consisting
six
plants.
treatments
consisted
90
hybrids
34
parental
lines
which
grain
yield
bags
processed
per
hectare
evaluated
according
to
cumulative
result
first
harvests.
Significant
differences
were
observed
between
124
treatments,
mean
accumulated
productivity
values
best
surpassing
those
four
most
used
commercial
cultivars
by
more
than
74
hectare.
average
64.2%,
varying
from
-
26.1
184.4.
Both
general
(GCA)
specific
(SCA)
statistically
significant,
best-performing
identified
as
potential
being
'Acauã
Novo',
'IAC
125
RN',
'MGS
Liberdade',
'Catiguá
MG2',
'Sarchimor
MG
8840'.
Promising
for
exploitation
productive
advantage
30%
relative
standard
cultivar,
reinforcing
C.
future.
Язык: Английский
Insights into the Genetics Underlying the Resistance to Root-Knot Nematode Reproduction in the Common Bean Ouro Negro
Plants,
Год журнала:
2025,
Номер
14(7), С. 1073 - 1073
Опубликована: Апрель 1, 2025
Root-knot
nematodes
(RKNs,
Meloidogyne
spp.)
have
become
the
major
yield-limiting
biological
factor
in
common
bean
production
many
warmer-climate
regions
such
as
south
of
Europe.
Broadening
genetic
base
resistance
elite
cultivars
is
most
effective
and
environmentally
friendly
method
for
managing
this
disease.
Toward
goal,
F1,
F2,
F3
populations
from
crosses
between
susceptible
snap
beans
(Helda
Perona)
resistant
Ouro
Negro
cultivar
were
phenotyped
M.
incognita
javanica-induced
root-galling
(GI)
egg
mass
(EM)
controlled
growth
chamber
infection
assays.
F1
progenies
showed
a
response
to
both
RKN
isolates,
with
high
GI
EM
values,
indicating
recessive
inheritance
nematode
resistance.
The
estimates
broad-sense
heritability
F2
Helda
×
population
infected
0.62
0.54,
respectively.
largely
by
partial
overdominant
effects
that
susceptibility
leads
minimum
number
genes
involved
was
estimated
be
about
two
or
three.
In
agreement,
analysis
segregating
supported
duplicate
epistasis
pattern
provided
cultivar.
an
important
resource
broadening
cultivars.
Язык: Английский
Nonadditive gene expression contributing to heterosis in partially heterozygous maize hybrids is predominantly regulated from heterozygous regions
New Phytologist,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
Summary
Hybrids
often
perform
better
than
their
homozygous
parents,
a
phenomenon
that
is
commonly
referred
to
as
heterosis.
Heterosis
widely
utilized
in
modern
agriculture,
although
its
molecular
basis
not
very
well
understood.
In
this
study,
we
backcrossed
an
intermated
recombinant
inbred
line
population
of
maize
(
Zea
mays
L.)
with
parental
lines
B73
and
Mo17.
The
resulting
hybrids
exhibited
different
degrees
heterozygosity
We
identified
nonadditively
expressed
genes,
which
are
differently
from
mid‐parental
level.
addition,
surveyed
regulation
by
investigating
expression
quantitative
trait
loci
(eQTL).
Nonadditively
genes
explain
up
27%
heterotic
variance
the
backcross
hybrids.
Furthermore,
regulated
almost
exclusively
heterozygous
regions
genome.
observed
nonadditive
patterns
distinctly
depending
on
genetic
origin
higher
parent.
As
consequence,
these
regulatory
regimes
lead
gene
activity
most
demonstrated
contribute
heterosis
mode
might
translate
phylogenetic
distance
into
vigorous
Based
our
results,
hypothesize
diverging
preferences
beneficial
for
selecting
combinations
hybrid
breeding.
Язык: Английский
Hybrid Prediction in Horticulture Crop Breeding: Progress and Challenges
Plants,
Год журнала:
2024,
Номер
13(19), С. 2790 - 2790
Опубликована: Окт. 4, 2024
In
the
context
of
rapidly
increasing
population
and
diversified
market
demands,
steady
improvement
yield
quality
in
horticultural
crops
has
become
an
urgent
challenge
that
modern
breeding
efforts
must
tackle.
Heterosis,
a
pivotal
theoretical
foundation
for
plant
breeding,
facilitates
creation
superior
hybrids
through
crossbreeding
selection
among
variety
parents.
However,
vast
number
potential
presents
significant
breeders
efficiently
predicting
selecting
most
promising
candidates.
The
development
refinement
effective
hybrid
prediction
methods
have
long
been
central
to
research
this
field.
This
article
systematically
reviews
advancements
crops,
including
roles
marker-assisted
genomic
phenotypic
forecasting.
It
also
underscores
limitations
some
predictors,
like
genetic
distance,
which
do
not
consistently
offer
reliable
predictions.
Looking
ahead,
it
explores
integration
phenomics
with
technologies
as
means
elevate
accuracy
within
actual
programs.
Язык: Английский
Regulation of heterosis-associated gene expression complementation in maize hybrids
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 2, 2024
Abstract
The
dominance
model
of
heterosis
explains
the
superiority
F
1
-hybrids
via
complementation
unfavorable
by
beneficial
alleles
in
many
genes.
Consistent
with
this
model,
genes
active
only
one
parent
and
hybrid
display
single-parent
expression
(SPE)
complementation.
Here
we
demonstrated,
that
SPE
can
explain
up
to
29%
heterotic
variance
maize
(
Zea
mays
L.).
Moreover,
quantitative
trait
loci
(eQTL)
revealed,
genotype
determines
regulation
mode
patterns
cis
or
trans
,
which
might
how
phylogenetic
distance
translates
transcriptomic
diversity
hybrids.
Furthermore,
showed
most
eQTL
are
located
heterozygous
regions
genome
a
controls
activity
gene
regulates
lateral
root
density
We
anticipate
our
study
will
stimulate
further
research
elucidating
molecular
mechanisms
underlying
heterosis.
Язык: Английский
Structural variations contribute to genetic diversity and heterosis in rice
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 3, 2024
Abstract
The
contributions
of
structural
variants
(SVs)
to
rice
heterosis,
which
has
significantly
boosted
crop
yield,
remain
largely
unexplored.
In
this
study,
we
assembled
12
high-quality
genomes
and
revealed
that
SVs
are
pivotal
in
the
evolution
variation
indica
japonica
.
Our
findings
indicate
trigger
gene
expression
changes
explain
variance
heterosis
17
traits,
highlighting
importance
harnessing
heterosis.
Язык: Английский