Data/hora: 21/06/2024 05:23:17

Biblioteca(s): | Embrapa Milho e Sorgo.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 05/11/2019
Data da última atualização: | 24/01/2020
Autoria: | CASARI, R. A.; PAIVA, D. S.; SILVA, V. N. B.; FERREIRA, T. M. M.; SOUZA JUNIOR, M. T.; OLIVEIRA, N. G.; KOBAYASHI, A. K.; MOLINARI, H. B. C.; SANTOS, T. T.; GOMIDE, R. L.; MAGALHAES, P. C.; SOUSA, C. A. F. de.
Afiliação: | Raphael A. C. N. Casari; Dayane S. Paiva; Vivianny N. B. Silva, Universidade Federal de Lavras; Thalita M. M. Ferreira, Universidade Federal de Lavras; MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE; Nelson G. Oliveira, Universidade Federal de Lavras; Adilson K. Kobayashi; HUGO BRUNO CORREA MOLINARI, CNPAE; THIAGO TEIXEIRA SANTOS, CNPTIA; Reinaldo Lucio Gomide, Pesquisador aposentado- CNPMS; PAULO CESAR MAGALHAES, CNPMS; CARLOS ANTONIO FERREIRA DE SOUSA, CPAMN.
Título: | Using thermography to confirm genotypic variation for drought response in maize.
Ano de publicação: | 2019
Fonte/Imprenta: | International Journal of Molecular Sciences, v. 20, n. 9, article 2273, 2019.
DOI: | 10.3390/ijms20092273
Idioma: | Inglês
Conteúdo: | The feasibility of thermography as a technique for plant screening aiming at drought-tolerance has been proven by its relationship with gas exchange, biomass, and yield. In this study, unlike most of the previous, thermography was applied for phenotyping contrasting maize genotypes whose classification for drought tolerance had already been established in the field. Our objective was to determine whether thermography-based classification would discriminate the maize genotypes in a similar way as the field selection in which just grain yield was taken into account as a criterion. We evaluated gas exchange, daily water consumption, leaf relative water content, aboveground biomass, and grain yield. Indeed, the screening of maize genotypes based on canopy temperature showed similar results to traditional methods. Nevertheless, canopy temperature only partially reflected gas exchange rates and daily water consumption in plants under drought. Part of the explanation may lie in the changes that drought had caused in plant leaves and canopy structure, altering absorption and dissipation of energy, photosynthesis, transpiration, and partitioning rates. Accordingly, although there was a negative relationship between grain yield and plant canopy temperature, it does not necessarily mean that plants whose canopies were maintained cooler under drought achieved the highest yield.
Palavras-Chave: | Déficit de água; Estresse abiótico; Fenotipagem de plantas; Imagem térmica; Temperatura do dossel.
Thesagro: | Zea Mays.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/197552/1/Artigo-termografia.pdf
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (28977-1) - UPC - AP - DD -  -  -  - DIS