Orientador: Priscila Lupino Gratão / Coorientador: Carlos Alberto Martínez Huamán / Abstract: Drought and heat stresses are considered the main climatic factors damaging the plant growth. In addition, according to Intergovernmental Panel on Climate Change (IPCC), the effect of combined drought and heat stresses will also be exacerbated in the next years, resulting in crop yield and economic losses. In spite of the consequences of the drought and heat combinations, the investigations to reduce its detrimental effects are scarce, particularly under climate change conditions. In this sense, we carried out two experiments in field conditions to determine the plant antioxidant responses to drought (wS), elevated temperature (+2 °C above air temperature) (eT) and combined drought and elevated temperature stresses. We used Panicum maximum during the first experiment and Stylosanthes capitata during the second one. In order to increase the temperature, we used the Temperature Free-Air Controlled Enhancement (T-FACE) facility. Samplings of P. maximum were taken 13, 19 and 37 days after the treatments have begun in the first experiment; meanwhile, the samplings of S. capitata were taken 17, 24 and 46 days in the second experiment. In both experiment, the samplings were taken at 6:00 am and 12:00 pm. The following combined stresses displayed an increase of chlorophyll and carotenoid contents in P. maximum (particularly at 19 days after the treatments have begun). Furthermore, the occurrence of precipitation after the second sampling reflecting induced the decreased in MDA and ca... (Complete abstract click electronic access below) / Doutor
| Identifer | oai:union.ndltd.org:UNESP/oai:www.athena.biblioteca.unesp.br:UEP01-000918081 |
| Date | January 2019 |
| Creators | Borjas Ventura, Ricardo Roberto. |
| Contributors | Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências Agrárias e Veterinárias. |
| Publisher | Jaboticabal, |
| Source Sets | Universidade Estadual Paulista |
| Language | Portuguese |
| Detected Language | English |
| Type | text |
| Format | v, 100 p. : |
| Relation | Sistema requerido: Adobe Acrobat Reader |
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