Grain yield, anthesis-silking interval and drought tolerance indices of tropical maize hybrids

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dc.creatorSantos, Álvaro de Oliveira
dc.creatorVon Pinho, Renzo Garcia
dc.creatorSouza, Vander Fillipe de
dc.creatorGuimarães, Lauro José Moreira
dc.creatorBalestre, Márcio
dc.creatorPires, Luiz Paulo Miranda
dc.creatorSilva, Carlos Pereira da
dc.date.accessioned2020-09-22T17:58:07Z
dc.date.available2020-09-22T17:58:07Z
dc.date.issued2020-03
dc.description.abstractWater deficit stress is the abiotic factor with the highest impact on crop yield. The objective of this study was to evaluate grain yield (GY), the anthesis-silking interval (ASI) and drought tolerance indices in maize hybrids. We evaluated GY and the ASI of 86 hybrids under two moisture levels (normal irrigation and water stress) for three consecutive years. The stress susceptibility index, water stress tolerance, drought resistance coefficient, drought resistance index, stress tolerance index and harmonic mean were evaluated. There were significant hybrid x environment interactions for GY and the ASI. Differences in the ASI among environments ranged from 0 to 5 days. The hybrids P3862, 1I873, 1I923, 1I862 and 1J1211 showed high GY, associated with the highest drought tolerance indices. The stress tolerance index and harmonic mean indices can be used to identify higher-yielding maize hybrids in environments with and without water restriction.pt_BR
dc.identifier.citationSANTOS, A. de O. et al. Grain yield, anthesis-silking interval and drought tolerance indices of tropical maize hybrids. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 20, n. 1, e176020110, 2020. DOI: https://doi.org/10.1590/1984-70332020v20n1a10.pt_BR
dc.identifier.urihttps://repositorio.ufla.br/handle/1/43155
dc.languageenpt_BR
dc.publisherCrop Breeding and Applied Biotechnologypt_BR
dc.rightsacesso abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceSociedade Brasileira de Melhoramento de Plantaspt_BR
dc.subjectStress tolerancept_BR
dc.subjectWater stresspt_BR
dc.subjectWater deficitpt_BR
dc.subjectZea mayspt_BR
dc.subjectGrãos - Rendimentopt_BR
dc.subjectMilho - Silagempt_BR
dc.subjectPlantas - Tolerância à secapt_BR
dc.subjectEstresse hídricopt_BR
dc.subjectDéficit hídricopt_BR
dc.titleGrain yield, anthesis-silking interval and drought tolerance indices of tropical maize hybridspt_BR
dc.typeArtigopt_BR

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