Data/hora: 09/06/2024 11:58:51

Provedor de dados: | 52
País: | Brazil
Título: | A method to improve leaf succulence quantification
Autores: | Mantovani,André.
Data: | 1999-01-01
Ano: | 1999
Palavras-chave: | Leaf succulence; Water relations; Leaf anatomy; Araceae; Ecophysiology.
Resumo: | Leaf succulence has important physiological and ecological implications. Currently it is quantified by Delf's index (fresh weight/leaf area) and fresh weight/ dry weight ratio. Both indeces are reconsidered and a new index is proposed. Shade and sun leaves from terrestrial, hemiepiphytic and epiphytic aroids were studied. Delf's formula, which does not consider dry weight, overestimated leaf succulence. As fresh weight / dry weight ratio (fw / dw) does not consider leaf area, plants with the same fw / dw ratio were more than five times different in area. The last case was only possible with a decrease in surface / volume ratio and a increase of mesophyll thickness, components not measured by fw / dw ratio. The new index proposed here, which takes into consideration dry weight and leaf area, showed a high correlation to mesophyll thickness.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100002
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89131999000100002
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.42 n.1 1999
Fonte: | info:eu-repo/semantics/openAccess