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dc.contributorTondelli, Alessandroen_US
dc.contributorRizza, Fulviaen_US
dc.contributorBadeck, Franzen_US
dc.contributorNicosia, Orazio Li Destrien_US
dc.contributorAkar, Taneren_US
dc.contributorGrando, Stefaniaen_US
dc.contributorAl-Yassin, Adnanen_US
dc.contributorBenbelkacem, Abdelkaderen_US
dc.contributorThomas, Williamen_US
dc.contributorvan Eeuwijk, Freden_US
dc.contributorRomagosa, Ignacioen_US
dc.contributorStanca, Antonio Micheleen_US
dc.contributorPecchioni, Nicolaen_US
dc.creatorFrancia, Enricoen_US
dc.identifier.citationEnrico Francia, Alessandro Tondelli, Fulvia Rizza, Franz Badeck, Orazio Li Destri Nicosia, Taner Akar, Stefania Grando, Adnan Al-Yassin, Abdelkader Benbelkacem, William Thomas, Fred van Eeuwijk, Ignacio Romagosa, Antonio Michele Stanca, Nicola Pecchioni. (14/1/2011). Determinants Of Barley Grain Yield In A Wide Range Of Mediterranean Environments. Field Crops Research, 120 (1), pp. 169-178.en_US
dc.description.abstractBarley grain yield in rainfed Mediterranean regions can be largely influenced by terminal drought events. In this study the ecophysiological performance of the 'Nure' (winter) x 'Tremois' (spring) barley mapping population (118 Doubled Haploids, DHs) was evaluated in a multi-environment trial of eighteen site-year combinations across the Mediterranean Basin during two consecutive harvest years (2004 and 2005). Mean grain yield of sites ranged from 0.07 to 5.43 t ha(-1), clearly dependent upon both the total water input (rainfall plus irrigation) and the water stress index (WSI) accumulated during the growing season. All DHs were characterized for possessing molecular marker alleles tagging four genes that regulate barley cycle, i.e. Vrn-H1, Vrn-H2, Ppd-H2 and Eam6. Grain yield differences were initially interpreted in terms of mean differences between genotypes (G), environments (E), and for each combination of genotype and environment (GE) through a full interaction ANOVA model. Variance components estimates clearly showed the greater importance of GE over G, although both were much lower than E. Alternative linear and bilinear models of increasing complexity were used to describe GE. A linear model fitting allelic variation at the four genes explained genotype main effect and genotype x environment interaction much better than growth habit itself. Adaptation was primarily driven by the allelic constitution at three out of the four segregating major genes, i.e. Vrn-H1, Ppd-H2 and Eam6. In fact, the three genes together explained 47.2% of G and 26.3% of GE sum of squares. Grain yield performance was more determined by the number of grains per unit area than by the grain weight (phenotypic correlation across all genotypic values: r = 0.948 and 0.559, respectively). The inter-relationships among a series of characters defining grain yield and its components were also explored as a function of the length of the different barley developmental phases. i.e. vegetative, reproductive, and grain filling stages. In most environments, the best performing (adapted) genotypes were those with faster development until early occurrence of anthesis. This confirmed the crucial role of the period defining the number of grains per unit-area in grain yield determination under Mediterranean environments. (C) 2010 Elsevier B.V. All rights reserved.en_US
dc.publisherElsevier (12 months)en_US
dc.sourceField Crops Research;120,(2010) Pagination 169-178en_US
dc.subjectge interactionen_US
dc.subjectyield adaptationen_US
dc.subjectmediterranean environmenten_US
dc.subjectdevelopmental genesen_US
dc.titleDeterminants Of Barley Grain Yield In A Wide Range Of Mediterranean Environmentsen_US
dc.typeJournal Articleen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerInstitut Technique des Grandes Cultures - ITGCen_US
cg.contributor.centerNational Agricultural Research Center Jordan - NARC Jordanen_US
cg.contributor.centerWageningen University & Research Centre - WURen_US
cg.contributor.centerUniversity of Lleida - UDLen_US
cg.contributor.centerGenomics Research Centreen_US
cg.contributor.centerUniversity of Modena and Reggio Emilia - UNIMREen_US
cg.contributor.centerMinistry of Agriculture and forestry, Field Crops Central Research Institute - TARIMORMAN - CRIFCen_US
cg.contributor.centerScottish Crop Research Institute - SCRIen_US
cg.contributor.centerGenomic Research Centeren_US
cg.contributor.centerPotsdam Institute for Climate Impact Researchen_US
cg.contributor.centerCereal Research Centeren_US
cg.contributor.funderEuropean Union - EU Belgiumen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
cg.journalField Crops Researchen_US

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