RT Journal Article
T1 Deciphering Main Climate and Edaphic Components Driving Oat Adaptation to Mediterranean Environments
A1 Canales, Francisco J.
A1 Montilla Bascón, Gracia
A1 Gallego Sánchez, Luis Miguel
A1 Flores Gil, Fernando
A1 Rispail, Nicolas
A1 Prats, Elena
AB Oat, Avena sativa, is an important crop traditionally grown in cool-temperate regions.However, its cultivated area in the Mediterranean rim steadily increased during thelast 20 years due to its good adaptation to a wide range of soils. Nevertheless,under Mediterranean cultivation conditions, oats have to face high temperatures anddrought episodes that reduce its yield as compared with northern regions. Therefore,oat crop needs to be improved for adaptation to Mediterranean environments. In thiswork, we investigated the influence of climatic and edaphic variables on a collection of709 Mediterranean landraces and cultivars growing under Mediterranean conditions.We performed genotype–environment interaction analysis using heritability-adjustedgenotype plus genotype–environment biplot analyses to determine the best performingaccessions. Further, their local adaptation to different environmental variables and thepartial contribution of climate and edaphic factors to the different agronomic traitswas determined through canonical correspondence, redundancy analysis, and variationpartitioning. Here, we show that northern bred elite cultivars were not among thebest performing accessions in Mediterranean environments, with several landracesoutyielding these. While all the best performing cultivars had early flowering, thiswas not the case for all the best performing landraces, which showed differentpatterns of adaption to Mediterranean agroclimatic conditions. Thus, higher yieldinglandraces showed adaptation to moderate to low levels of rain during pre- and postflowering periods and moderate to high temperature and radiation during post-floweringperiod. This analysis also highlights landraces adapted to more extreme environmentalconditions. The study allowed the selection of oat genotypes adapted to different climateand edaphic factors, reducing undesired effect of environmental variables on agronomictraits and highlights the usefulness of variation partitioning for selecting genotypesadapted to specific climate and edaphic conditions
PB Frontiers Media
SN 1664-462X
YR 2021
FD 2021-11
LK http://hdl.handle.net/10272/21131
UL http://hdl.handle.net/10272/21131
LA eng
NO Canales, F. J., Montilla-Bascón, G., Gallego-Sánchez, L. M., Flores, F., Rispail, N., & Prats, E. (2021). Deciphering Main Climate and Edaphic Components Driving Oat Adaptation to Mediterranean Environments. In Frontiers in Plant Science (Vol. 12). Frontiers Media SA. https://doi.org/10.3389/fpls.2021.780562
NO This work was supported by the grant PID2019-104518RBI00 funded by MCIN/AEI/10.13039/501100011033. FC andLMG-S are holder of a FPI fellowship (BES-2014-071044) and(BES-2017-080152), respectively, from the Spanish Ministry ofEconomy and Competitiveness. GM-B is holder of a Junta deAndalucia grant for Doctors [DOC_00394].We thank CRF and USDA for supplying the seeds
DS Repositorio Institucional de la Universidad de Huelva
RD 2 jun 2026