Registro completo |
Provedor de dados: |
BABT
|
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
|
Direitos: |
info:eu-repo/semantics/openAccess
|