Data/hora: 12/06/2024 16:53:06

Provedor de dados: | 52
País: | Brazil
Título: | Temporal dynamics of stomatal conductance of plants under water deficit: can homeostasis be improved by more complex dynamics?
Autores: | Souza,Gustavo Maia; Oliveira,Ricardo Ferraz de; Cardoso,Victor José Mendes.
Data: | 2004-07-01
Ano: | 2004
Palavras-chave: | Beta vulgaris; Complexity; Helianthus annus; Stability; Time series analyses; Water deficit.
Resumo: | In this study we hypothesized that chaotic or complex behavior of stomatal conductance could improve plant homeostasis after water deficit. Stomatal conductance of sunflower and sugar beet leaves was measured in plants grown either daily irrigation or under water deficit using an infrared gas analyzer. All measurements were performed under controlled environmental conditions. In order to measure a consistent time series, data were scored with time intervals of 20s during 6h. Lyapunov exponents, fractal dimensions, KS entropy and relative LZ complexity were calculated. Stomatal conductance in both irrigated and non-irrigated plants was chaotic-like. Plants under water deficit showed a trend to a more complex behaviour, mainly in sunflower that showed better homeostasis than in sugar beet. Some biological implications are discussed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300013
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000300013
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.3 2004
Fonte: | info:eu-repo/semantics/openAccess