| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
A method to improve leaf succulence quantification
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| Autores: |
Mantovani,André
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| Data: |
1999-01-01
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| Ano: |
1999
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| Palavras-chave: |
Leaf succulence
Water relations
Leaf anatomy
Araceae
Ecophysiology
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000100002
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89131999000100002
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.42 n.1 1999
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| Direitos: |
info:eu-repo/semantics/openAccess
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