Water relations in physic nut according to climatic seasonality, in semiarid conditions
| Autor: | Bruno Monteiro Rodrigues, Gabriela Burle Arcoverde, Antônio Celso Dantas Antonino, Mauro Guida Santos |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Pesquisa Agropecuária Brasileira, Vol 46, Iss 9, Pp 1112-1115 (2011) |
| Druh dokumentu: | article |
| ISSN: | 1678-3921 0100-204X |
| DOI: | 10.1590/S0100-204X2011000900020 |
| Popis: | The objective of this work was to determine the effect of climatic seasonality on physic nut (Jatropha curcas), in field, under semiarid climate conditions. Stomatal conductance (g s), transpiration (E), soluble leaf carbohydrates (SLC), free amino acids (FAA) and total proteins (TP) were measured in leaves, in a commercial plantation in Northeast Brazil, during the summer and autumn. Plants showed high g s and E, as well as SLC, FAA and TP contents in the summer, which gradually decreased with the lower temperatures and photosynthetically active radiation during the autumn, despite the higher water availability. Even in conditions of adequate water availability, the combination of low temperatures and reduced light drastically decreased foliar metabolism. |
| Databáze: | Directory of Open Access Journals |
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