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Asymmetrical leaves induced by water deficit show asymmetric photosynthesis in common bean
Provedor de dados: Brazilian Journal of Plant Physiology
Autores: Souza,Gustavo Maia; Viana,Juliana de Oliveira Fernandes; Oliveira,Ricardo Ferraz de.
In this study we tested the hypothesis that leaf asymmetric growth induced by water deficit in common bean (Phaseolus vulgaris L.) might be correlated with different net photosynthesis rates between the two opposed leaflets (right and left) considering a bilateral symmetric plane. In order to induce developmental instability, the drought-sensitive common bean genotype "Jalo Precoce" was subjected to periods of suspended irrigation during its vegetative growth. Developmental instability was evaluated by measurements of leaflets asymmetry, and the effects of drought on gas exchanges were taken in both symmetrical leaflets (right and left) in relation to the central leaflet. Water deficit induced an increase of 80 % in leaf asymmetry. Net photosynthesis of P....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Developmental instability; Leaf symmetry; Water deficit.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200005