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Evaluation of hydration indexes in kale leaves 61
Calbo,Adonai G.; Ferreira,Marcos D..
Hydration indexes are practical variables for quantifying plant water stress and can be useful for agronomic purposes. Three adapted hydration indexes based on relative water content, volumetric hydration, and leaf turgor pressure were evaluated in kale (Brassica oleracea var. acephala) leaf segments. Relative water content and volumetric hydration were measured in leaf segments after a water infiltration procedure with the aim of filling its large intercellular volumes (@18%v/v). The infiltration was done using a hydrostatic weighing procedure and with the aid of vacuum to fully hydrate the leaf segments. These two relative indexes were proportional to the transpiration-induced leaf water loss. The third index, turgor pressure, was measured with a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brassica oleracea; Intercellular air volume; Volumetric hydration; Relative water content; Turgor pressure; Leaf volumetric elastic modules; Wiltmeter.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000200006
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