A new sunflower high oleic mutation confers stable oil grain fatty acid composition across environments

Authors
Alberio, Constanza; Izquierdo, Natalia Gabriela; Galella, Teresa; Zuil, Sebastian; Reid, Roberto; Zambelli, Andres Daniel; Aguirrezábal, Luis Adolfo Nazareno
Publication Year
2016
Language
English
Format
article
Status
Published version
Description
The oil industry demands sunflower oils with high oleic acid content. New varieties producing high oleic oils independently of the growing environment are needed as growers could receive an extra prime for offering them. Oil fatty acid composition of high oleic sunflower hybrids currently available carrying the Pervenets mutation could however be affected by the temperature during the grain filling period. A new high oleic mutation has been obtained to attain oils with ultra-high oleic levels (>90%oleic acid content). This new structural mutation would be able to reduce the variation in oleic acid percentage to changes in the minimum night temperature (MNT). The aim of this work was to assess the response of oil fatty acid composition of the new high oleic mutation to MNT compared to traditional and Pervenets genotypes. Field experiments in different sowing dates and locations and one growth chambers experiment were performed to explore a wide range of temperatures (11.8-23.2°C) during grain filling. The oleic acid percentage in traditional and high oleic Pervenets genotypes varied between 15.0-50.9% and 87.4-91.2%, respectively, while the new mutation genotype presented values of oleic acid between 91.3 and 92.5%. Moreover, the oleic acid percentage of traditional and Pervenets genotypes showed a linear and positive response to temperature (slopes 2.95 and 0.28%oleic acid °C-1, respectively). No response to temperature was detected in the new mutation genotype. The ultra-high oleic quality from the new high oleic sunflower mutant could be obtained in a wide range of environments as the fatty acid composition was not affected by temperature during grain filling, representing an advantage over the high oleic Pervenets and traditional genotypes.
Fil: Alberio, Constanza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina
Fil: Izquierdo, Natalia Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata; Argentina
Fil: Galella, Teresa. Advanta Semillas S.A.I.C.; Argentina
Fil: Zuil, Sebastian. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Santa Fe. Estación Experimental Agropecuaria Reconquista; Argentina
Fil: Reid, Roberto. Advanta Semillas S.A.I.C.; Argentina
Fil: Zambelli, Andres Daniel. Advanta Semillas S.A.I.C.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Aguirrezábal, Luis Adolfo Nazareno. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Subject
GRAIN FILLING
OIL COMPOSITION
TEMPERATURE
ULTRA-HIGH OLEIC MUTANT
Agricultura
Agricultura, Silvicultura y Pesca
CIENCIAS AGRÍCOLAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/38005