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Physiological parameters in sugarcane cultivars submitted to water deficit Braz. J. Plant Physiol.
Graça,José Perez da; Rodrigues,Fabiana Aparecida; Farias,José Renato Bouças; Oliveira,Maria Cristina Neves de; Hoffmann-Campo,Clara Beatriz; Zingaretti,Sonia Marli.
To investigate the processes involved in the susceptibility of sugarcane plants to water deficit, several physiological parameters were evaluated in drought tolerant (SP83-2847 and CTC15) and sensitive (SP86-155) cultivars. The water deficit affected the photosynthetic apparatus of all the plants in different ways, within and among cultivars. The photosynthetic rate and stomatal conductance decreased significantly in all cultivars submitted to water deficit. In control plants of the tolerant cultivars (SP83-2847 and CTC15) the photosynthetic rate was higher than in the sensitive cultivar (SP86-155). Cultivar CTC15 showed the highest relative water content during the dry period. The quantum efficiency photosystem II of cultivar SP83-2847 was more stable in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Photosynthetic efficiency; Relative water content; Saccharum; Water stress; Drought.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000300006
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