Combining ability and heterosis of maize genotypes under water stress during seed germination and seedling emergence

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorAbreu, Viviane Maria de-
Autor(es): dc.creatorVon Pinho, Édila Vilela de Resende-
Autor(es): dc.creatorMendes-Resende, Marcela Pedroso-
Autor(es): dc.creatorBalestre, Márcio-
Autor(es): dc.creatorLima, Aline Caroline-
Autor(es): dc.creatorSantos, Heloisa Oliveira-
Autor(es): dc.creatorVon Pinho, Renzo Garcia-
Data de aceite: dc.date.accessioned2026-02-09T12:39:28Z-
Data de disponibilização: dc.date.available2026-02-09T12:39:28Z-
Data de envio: dc.date.issued2019-03-29-
Data de envio: dc.date.issued2019-03-29-
Data de envio: dc.date.issued2018-10-31-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/33334-
Fonte completa do material: dc.identifierhttps://dl.sciencesocieties.org/publications/cs/abstracts/59/1/33-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1165698-
Descrição: dc.descriptionEarly characterization of maize (Zea mays L.) genotypes, as well as the study of the genetic control of traits associated with water deficit tolerance, can provide information to guide breeders in the selection of cultivars adapted to drought environments. The aim of this study was to estimate heterosis and combining ability of maize genotypes under water stress during seed germination and seedling emergence. Four inbred lines previously characterized as water stress tolerant were crossed with four nontolerant lines in partial diallel scheme to obtain 16 hybrids and 16 reciprocals. Seeds were germinated in trays with sand in two environments, with and without water stress, with field capacity adjusted to 10 and 70% of humidity. The traits evaluated were seedling emergence, emergence speed index, shoot length, root length, number of seminal roots, and shoot and root dry weights. The heterosis effect, general combining ability, specific combining ability, and reciprocal effects were estimated for each trait using a partial diallel mixed model. The nonadditive effects were more important, and heterosis was observed in all cases, more expressively for root traits. The reciprocal effects were significant, highlighting the importance of the correct choice of the female parent to obtain maize hybrids tolerant to water stress.-
Idioma: dc.languageen-
Publicador: dc.publisherCrop Science Society of America-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceCrop Breeding & Genetics-
Palavras-chave: dc.subjectWater stress-
Palavras-chave: dc.subjectHeterosis-
Palavras-chave: dc.subjectSeed germination-
Palavras-chave: dc.subjectSeedling emergence-
Palavras-chave: dc.subjectMaize - Genetic Improvement-
Palavras-chave: dc.subjectEstresse hídrico-
Palavras-chave: dc.subjectHeterose-
Palavras-chave: dc.subjectGerminação das sementes-
Palavras-chave: dc.subjectEmergência de mudas-
Palavras-chave: dc.subjectMilho - Melhoramento Genético-
Título: dc.titleCombining ability and heterosis of maize genotypes under water stress during seed germination and seedling emergence-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

Não existem arquivos associados a este item.