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dc.contributorGrando, Stefaniaen_US
dc.contributorKafawin, Omaren_US
dc.contributorTell, A.en_US
dc.contributorCeccarelli, Salvatoreen_US
dc.creatorAl-Yassin, Adnanen_US
dc.identifier.citationAdnan Al-Yassin, Stefania Grando, Omar Kafawin, A. Tell, Salvatore Ceccarelli. (28/6/2008). Heritability estimates in contrasting environments as influenced by the adaptation level of barley germ plasm. Annals of Applied Biology, 147 (3), pp. 235-244.en_US
dc.description.abstractLow heritability estimates in marginal or stress environments have often been used as one of the main justification for conducting selection work in environments with optimum or near‐optimum conditions for plant growth and grain yield. In this study, we have examined the relationships between grain yield and broad‐sense heritability in four groups of recombinant inbred lines (RILs) obtained from four barley crosses derived from parents differing in adaptation to stress. The RILs and the parents were grown in 13 combinations of years and locations (environments) in Syria and Jordan. Grain yields ranged from about 30 kg ha−1 to nearly 4000 kg ha−1 and genotype × environment interactions explained about half of the total variance for environmentally standardised data. Broad‐sense heritability in the individual year–location combinations varied from 0 to 0.68 and both the simple correlation and the rank correlation coefficients between grain yield and heritability were not significant. Genotype × years within individual locations, which measures the repeatability of a location in discriminating between genotypes, was also independent from the yield level, confirming that low‐yielding locations can be reliable selection environments. Also, there was no relationship between the type of cross and the magnitude of heritability in the various environments, but, as expected, the magnitude of heritability was significantly associated with the genetic distance between the parents. It is concluded that, holding all other factors affecting response to selection constant, concerns about the magnitude of heritability at low‐yielding locations are not justified and should not prevent them from being used as selection sites.en_US
dc.publisherWiley (12 months)en_US
dc.sourceAnnals of Applied Biology;147,(2008) Pagination 235-244en_US
dc.subjectmarginal environmentsen_US
dc.subjectgenotype × environment interactionen_US
dc.subjectselection environmenten_US
dc.titleHeritability estimates in contrasting environments as influenced by the adaptation level of barley germ plasmen_US
dc.typeJournal Articleen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerNational Agricultural Research Center Jordan - NARC Jordanen_US
cg.contributor.centerUniversity of Jordan - JUen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_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.journalAnnals of Applied Biologyen_US

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