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| Girardi,Eduardo Augusto; Brandão,Andréa Dias; Coelho,Rubens Duarte; Couto,Hilton Thadeu Zarate do; Buckeridge,Marcos Silveira; Mourão Filho,Francisco de Assis Alves. |
| Abstract Drought tolerance is a major trait for the selection of citrus rootstocks in breeding programs. PEG 4000 solution at 110 g L-1 (osmotic potential of -376 kPa) was used to evaluate biometric, physiological, and biochemical responses of grafted citrus plants in pots. ‘Valencia’ sweet orange plants grafted onto ‘Rangpur’ lime (drought tolerant) rootstock showed greater plant growth compared to that on ‘Swingle’ citrumelo (drought sensitive) rootstock, regardless of PEG-induced stress; however, biological responses to PEG were similar on both rootstocks. Plant dry weight, gas exchange, and leaf and root starch concentrations were reduced by PEG. Water potential at 2:00 p.m. and Fe and Mn leaf concentrations increased with severe phytotoxic symptoms.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Citrus limonia; Citrus paradisi x Poncirus trifoliata; Osmotic agent; Rootstock; Water deficit. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000601001 |
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