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dc.contributor.authorRoyo, Conxita
dc.contributor.authorAmmar, Karim
dc.contributor.authorAlfaro, Christian
dc.contributor.authorDreisigacker, Susanne
dc.contributor.authorGarcía del Moral, Luis Fernando
dc.contributor.authorVillegas, Dolors
dc.contributor.otherAgrosistemes i Medi Ambientca
dc.date.accessioned2019-03-27T15:37:30Z
dc.date.available2019-03-27T15:37:30Z
dc.date.issued2017-06-21
dc.identifier.citationRoyo, Conxita, Karim Ammar, Christian Alfaro, Susanne Dreisigacker, Luis Fernando García del Moral, and Dolors Villegas. 2018. "Effect Of Ppd-1 Photoperiod Sensitivity Genes On Dry Matter Production And Allocation In Durum Wheat". Field Crops Research 221: 358-367. Elsevier BV. doi:10.1016/j.fcr.2017.06.005.ca
dc.identifier.issn0378-4290ca
dc.identifier.urihttp://hdl.handle.net/20.500.12327/222
dc.description.abstractUnderstanding the effect of genetic factors controlling flowering time is essential to fine-tune phenological development and to maximize yield. Thirty-four spring durum wheat genotypes classified in five allelic combinations for Ppd-A1/Ppd-B1 loci were grown for two years at three contrasting latitudes: Mexico-North, SpainSouth and Spain-North. In all them, a delay in flowering date due to the presence of photoperiod sensitivity alleles Ppd-A1b and Ppd-B1b resulted in lower yields. The number of days to flowering, determined by an increasing number of photoperiod sensitivity alleles, accounted in all sites for more than 80% of the variation in the contribution of translocation of pre-flowering assimilates to grain yield. In Mexico and Spain-North lateflowering resulted in decreased harvest index as influenced by high temperatures during grain filling. In Mexico, where grain filling occurred under high temperatures and solar radiation, translocation of pre-flowering assimilates accounted from 55 to 63% of yield, independently of the flowering date of the genotype. In SpainNorth, where water was available during grain filling, current photosynthesis was the main contributor to yield (57–73%), with independence of the allelic combination at Ppd loci. In Spain-South, the relative contribution of photosynthesis and translocation depended on the allelic composition at Ppd loci, with translocation increasing by 24% in the latest-flowering genotypes compared with the earliest ones. In all sites the limiting factor for attaining high yields was the capacity of the plant canopy to photosynthesize after anthesis. This study suggests that the expression of genes Ppd-A1 and Ppd-B1 regulating the response to photoperiod modulates the physiological strategy adopted by durum wheat to fill its grains, underlining the importance of phenology fitting in maximizing grain yield.ca
dc.format.extent10ca
dc.language.isoengca
dc.publisherElsevierca
dc.relation.ispartofField Crops Researchca
dc.rightsAttribution 4.0 Internationalca
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleEffect of Ppd-1 photoperiod sensitivity genes on dry matter production and allocation in durum wheatca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versionreprintca
dc.embargo.termscapca
dc.relation.projectIDINIA/Programa Nacional de Proyectos de Investigación Fundamental/RTA2009-00085-00-00/ES/Bases fenológicas y genéticas de los patrones de adaptación del trigo duro a diversas condiciones fototérmicas y su utilidad para el desarrollo de germoplasma en el marco de la relación España-CIMMYT/ca
dc.relation.projectIDINIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2015-00038-00-00/ES/La constitución alélica para genes responsables de la adaptación fenológica como estrategia para minimizar las limitaciones ambientales al rendimiento del trigo. Casos de estudio en ambientes objetivo de ambos hemisferios/PHENOFITTINGca
dc.relation.projectIDINIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2012-37217/ES/HERRAMIENTAS PARA LA MEJORA DEL TRIGO DURO FRENTE A LOS RETOS DEL CAMBIO CLIMATICO/ca
dc.identifier.doihttps://doi.org/10.1016/j.fcr.2017.06.005ca
dc.contributor.groupCultius Extensius Sosteniblesca


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