2024-03-28T08:15:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1331862022-11-16T08:02:31Zcom_10261_75com_10261_6com_10261_11col_10261_328col_10261_264
Revilla Temiño, Pedro
Rodríguez Graña, Víctor Manuel
Ordás Pérez, Amando
Rincent, Renaud
Charcosset, Alain
Giauffret, Catherine
Melchinger, Albrecht E.
Schön, Chris-Carolin
Bauer, Eva
Altmann, Thomas
Brunel, Dominique
Moreno-González, Jesús
Campo, Laura
Ouzunova, Milena
Álvarez Rodríguez, Ángel
Ruiz de Galarreta, José Ignacio
Laborde, Jacques
Malvar Pintos, Rosa Ana
2016-06-08T11:14:08Z
2016-06-08T11:14:08Z
2016-06
Revilla P, Rodríguez VM, Ordás A, Rincent R, Charcosset A, Giauffret C, Melchinger AE, Schön CC, Bauer E, Altmann T, Brunel D, Moreno-González J, Campo L, Ouzunova M, Álvarez A, Ruíz de Galarreta JI, Laborde J, Malvar RA. Association mapping for cold tolerance in two large maize inbred panels. BMC Plant Biology 16:127 (2016)
1471-2229
http://hdl.handle.net/10261/133186
10.1186/s12870-016-0816-2
1471-2229
http://dx.doi.org/10.13039/501100004837
http://dx.doi.org/10.13039/501100001665
http://dx.doi.org/10.13039/501100002347
http://dx.doi.org/10.13039/501100007273
27267760
Background: Breeding for cold tolerance in maize promises to allow increasing growth area and production in
temperate zones. The objective of this research was to conduct genome-wide association analyses (GWAS) in
temperate maize inbred lines and to find strategies for pyramiding genes for cold tolerance. Two panels of 306
dent and 292 European flint maize inbred lines were evaluated per se and in testcrosses under cold and control
conditions in a growth chamber. We recorded indirect measures for cold tolerance as the traits number of days
from sowing to emergence, relative leaf chlorophyll content or quantum efficiency of photosystem II. Association
mapping for identifying genes associated to cold tolerance in both panels was based on genotyping with 49,585
genome-wide single nucleotide polymorphism (SNP) markers.
Results: We found 275 significant associations, most of them in the inbreds evaluated per se, in the flint panel,
and under control conditions. A few candidate genes coincided between the current research and previous
reports. A total of 47 flint inbreds harbored the favorable alleles for six significant quantitative trait loci (QTL)
detected for inbreds per se evaluated under cold conditions, four of them had also the favorable alleles for the
main QTL detected from the testcrosses. Only four dent inbreds (EZ47, F924, NK807 and PHJ40) harbored the
favorable alleles for three main QTL detected from the evaluation of the dent inbreds per se under cold conditions.
There were more QTL in the flint panel and most of the QTL were associated with days to emergence and ΦPSII.
Conclusions: These results open new possibilities to genetically improve cold tolerance either with genome-wide selection or with marker assisted selection.
eng
http://creativecommons.org/licenses/by/4.0/
openAccess
GWAS
Maize
Cold tolerance
Chilling
QTL
Association mapping for cold tolerance in two large maize inbred panels
artículo