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Gas exchange and plant growth after defoliation on Leandra lacunosa, a cerrado woody species with continuous leaf production BABT
Damascos,Maria Angélica; Ronquim,Carlos Cesar; Prado,Carlos Henrique Britto Assis.
Morphological and physiological leaf traits were studied on control and defoliated potted Leandra lacunosa young plants. After defoliation, remaining bottom leaves showed no significant change in net photosynthesis and stomatal conductance values with time, but the leaf transpiration rate was higher. The production of the new leaves was greater after defoliation in top defoliated plants. Bottom defoliated plants increased stem extension rates and net photosynthesis transitorily. Two months after defoliation, control and defoliated plants did not differ in stem length and root dry mass values. In spite of smaller area and photosynthetic capacity, remaining bottom leaves were able to compensate top leaves elimination. The effectiveness of this compensatory...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Compensatory photosynthesis; Herbivory; Leaf age; Leaf phenology; Leandra lacunosa.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800013
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