Using Thermography to Confirm Genotypic Variation for Drought Response in Maize
| Autor: | Sousa Caf, Silva Vnb, Molinari Hbc, Souza Junior Mt, Paiva Ds, Nelson Geraldo de Oliveira, R. L. Gomide, Adilson Kenji Kobayashi, Ferreira Tmm, Casari Racn, Paulo César Magalhães, T. T. Santos |
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| Přispěvatelé: | RAPHAEL A. C. N. CASARI, CNPAE, DAYANE S. PAIVA, CNPAE, VIVIANNY N. B. SILVA, THALITA M. M. FERREIRA, MANOEL TEIXEIRA SOUZA JUNIOR, CNPAE, NELSON G. OLIVEIRA, CNPAE, ADILSON KENJI KOBAYASHI, CNPAE, HUGO BRUNO CORREA MOLINARI, CNPAE, THIAGO TEIXEIRA SANTOS, CNPTIA, REINALDO LUCIO GOMIDE, CNPMS, PAULO C. MAGALHÃES, CARLOS ANTONIO FERREIRA DE SOUSA, CPAMN., Raphael Augusto das Chagas Noqueli Casari, Bolsista da Embrapa Agroenergia, Dayane S. Paiva, Bolsista da Embrapa Agroenergia, Vivianny N. B. Silva, Bolsista da Embrapa Agroenergia, Thalita M. M. Ferreira, Bolsista da Embrapa Agroenergia, Nelson G. Oliveira, Bolsista da Embrapa Agroenergia, HUGO BRUNO CORREA MOLINARI, CNPAE. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Canopy Biomass Fenotipagem de plantas 01 natural sciences lcsh:Chemistry Yield (wine) Photosynthesis Zea Mays Water content lcsh:QH301-705.5 Spectroscopy Transpiration water deficit Temperature abiotic stress General Medicine Computer Science Applications Droughts canopy temperature Thermography Déficit hídrico Genotype Drought tolerance thermal image Zea mays Catalysis Article Inorganic Chemistry 03 medical and health sciences plant phenotyping Stress Physiological Physical and Theoretical Chemistry Molecular Biology Organic Chemistry Water Abiotic stress Plant Leaves 030104 developmental biology Agronomy lcsh:Biology (General) lcsh:QD1-999 Environmental science Edible Grain 010606 plant biology & botany |
| Zdroj: | International Journal of Molecular Sciences, Vol 20, Iss 9, p 2273 (2019) Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA International Journal of Molecular Sciences Volume 20 Issue 9 |
| ISSN: | 1422-0067 |
| Popis: | 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. Made available in DSpace on 2019-06-22T00:34:48Z (GMT). No. of bitstreams: 1 SEG05.12.12.001.00.05HUGO3ijms2002273v2.pdf: 6315240 bytes, checksum: ff562dd27405293d1747a55605057985 (MD5) Previous issue date: 2019 |
| Databáze: | OpenAIRE |
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