Allele frequencies in the VRN-A1, VRN-B1 and VRN-D1 vernalization response and PPD-B1 and PPD-D1 photoperiod sensitivity genes, and their effects on heading in a diverse set of wheat cultivars (Triticum aestivum L.)
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Tartalom: http://link.springer.com/article/10.1007%2Fs11032-014-003...
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published





Type = Article
Cím:
Allele frequencies in the VRN-A1, VRN-B1 and VRN-D1 vernalization response and PPD-B1 and PPD-D1 photoperiod sensitivity genes, and their effects on heading in a diverse set of wheat cultivars (Triticum aestivum L.)
Létrehozó:
Kiss, Tibor
Balla, Krisztina
Veisz, Ottó Bálint
Láng, László
Bedő, Zoltán
Karsai, Ildikó
Dátum:
2014
Téma:
QH301 Biology / biológia
QH3015 Molecular biology / molekuláris biológia
QK Botany / növénytan
QK10 Plant physiology / növényélettan
SB Plant culture / növénytermesztés
Tartalmi leírás:
Heading of cereals is determined by
complex genetic and environmental factors in which
genes responsible for vernalization and photoperiod
sensitivity play a decisive role. Our aim was to use
diagnostic molecular markers to determine the main
allele types in
VRN
-
A1
,
VRN
-
B1
,
VRN
-
D1
,
PPD
-
B1
and
PPD
-
D1
in a worldwide wheat collection of 683
genotypes and to investigate the effect of these alleles
on heading in the field. The dominant
VRN
-
A1
,
VRN
-
B1
and
VRN
-
D1
alleles were present at a low
frequency. The
PPD
-
D1a
photoperiod-insensitive
allele was carried by 57 % of the cultivars and was
most frequent in Asian and European cultivars. The
PPD
-
B1
photoperiod-insensitive allele was carried by
22 % of the genotypes from Asia, America and
Europe. Nine versions of the
PPD
-
B1
-insensitive
allele were identified based on gene copy number
and intercopy structure. The allele compositions in
PPD
-
D1
,
PPD
-
B1
and
VRN
-
D1
significantly influ-
enced heading and together explained 37.5 % of the
phenotypic variance. The role of gene model increased
to 39.1 % when
PPD
-
B1
intercopy structure was taken
into account instead of overall
PPD
-
B1
type (sensitive
vs. insensitive). As a single component,
PPD
-
D1
had
the most important role (28.0 % of the phenotypic
variance), followed by
PPD
-
B1
(12.3 % for
PPD
-
B1
_overall, and 15.1 % for
PPD
-
B1
_intercopy) and
VRN
-
D1
(2.2 %). Significant gene interactions were
identified between the marker alleles within
PPD
-
B1
and between
VRN
-
D1
and the two
PPD1
genes. The
earliest heading genotypes were those with the pho-
toperiod-insensitive allele in
PPD
-
D1
and
PPD
-
B1
,
and with the spring allele for
VRN
-
D1
and the winter
alleles for
VRN
-
A1
and
VRN
-
B1
. This combination
could only be detected in genotypes from Southern
Europe and Asia. Late-heading genotypes had the
sensitivity alleles for both
PPD1
genes, regardless of
the allelic composition of the
VRN1
genes. There was
a 10-day difference in heading between the earliest
and latest groups under field conditions.
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Kiss, Tibor and Balla, Krisztina and Veisz, Ottó Bálint and Láng, László and Bedő, Zoltán and Karsai, Ildikó (2014) Allele frequencies in the VRN-A1, VRN-B1 and VRN-D1 vernalization response and PPD-B1 and PPD-D1 photoperiod sensitivity genes, and their effects on heading in a diverse set of wheat cultivars (Triticum aestivum L.). MOLECULAR BREEDING, 34 (2). pp. 297-310. ISSN 1380-3743
Kapcsolat:
ADAPTAWHEAT EU-FP7