Molecular mapping in tropical maize (Zea mays L.) using microsatellite markers. 2. Quantitative trait loci (QTL) for grain yield, plant height, ear height and grain moisture

dc.creatorSibov, ST
dc.creatorDe Souza, CL
dc.creatorGarcia, AAF
dc.creatorSilva, AR
dc.creatorGarcia, AF
dc.creatorMangolin, CA
dc.creatorBenchimol, LL
dc.creatorDe Souza, AP
dc.date2003
dc.date2014-11-17T01:34:19Z
dc.date2015-11-26T16:02:38Z
dc.date2014-11-17T01:34:19Z
dc.date2015-11-26T16:02:38Z
dc.date.accessioned2018-03-28T22:52:02Z
dc.date.available2018-03-28T22:52:02Z
dc.identifierHereditas. Blackwell Munksgaard, v. 139, n. 2, n. 107, n. 115, 2003.
dc.identifier0018-0661
dc.identifierWOS:000189122000004
dc.identifier10.1111/j.1601-5223.2003.01667.x
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57788
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/57788
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57788
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1265109
dc.descriptionA previous genetic map containing 117 microsatellite loci and 400 F-2 plants was used for quantitative trait loci (QTL) mapping in tropical maize. QTL were characterized in a population of 400 F-2:3 lines, derived from selfing the F-2 plants, and were evaluated with two replications in five environments. QTL determinations were made from the mean of these five environments. Grain yield (GY), plant height (PH), ear height (EH) and grain moisture (GM) were measured. Variance components for genotypes (G), environments (E) and G x E interaction were highly significant for all traits. Heritability was 0.69 for GY, 0.66 for PH, 0.67 for EH and 0.23 for GM. Using composite interval mapping (CIM), a total of 13 distinct QTLs were identified: four for GY, four for PH and five for EH. No QTL was detected for GM. The QTL explained 32.73% of the phenotypic variance of GY, 24.76% of PH and 20.91% of EH. The 13 QTLs displayed mostly partial dominance or overdominance gene action and mapped to chromosomes 1, 2, 7, 8 and 9. Most QTL alleles conferring high values for the traits came from line L-14-4B. Mapping analysis identified genomic regions associated with two or more traits in a manner that was consistent with correlation among traits, supporting either pleiotropy or tight linkage among QTL. The low number of QTLs found, can be due to the great variation that exists among tropical environments.
dc.description139
dc.description2
dc.description107
dc.description115
dc.languageen
dc.publisherBlackwell Munksgaard
dc.publisherCopenhagen
dc.publisherDinamarca
dc.relationHereditas
dc.relationHereditas
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectEuropean Flint Lines
dc.subjectNonstress Environments
dc.subjectFacilitated Investigations
dc.subjectMorphological Traits
dc.subjectDifferent Testers
dc.subjectGenomic Regions
dc.subjectLinkage Maps
dc.subjectInbred Lines
dc.subjectIdentification
dc.subjectComponents
dc.titleMolecular mapping in tropical maize (Zea mays L.) using microsatellite markers. 2. Quantitative trait loci (QTL) for grain yield, plant height, ear height and grain moisture
dc.typeArtículos de revistas


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