This work evaluated in Paranavaí and Londrina, PR, Brazil, the vegetative growth fluxes of branches of 'Folha Murcha' orange on 'Rangpur' lime (Citrus limonia Osb.), 'Volkamer' lemon (Citrus volkameriana Ten. & Pasq.), 'Sunki' mandarin (Citrus sunki Hort. ex Tan.), 'Cleopatra' mandarin (Citrus reshni Hort. ex Tan.), and 'Pêra' orange on 'Rangpur' lime rootstock. Six growth flushes were observed in Paranavaí, and seven were observed in Londrina, in winter, spring, summer, and autumn, for all scion/rootstock combinations. The final length of the branches (121.2 mm to 151.6 mm) was not influenced by the scion/rootstock combinations in Londrina; in Paranavaí, however, the 'Pêra'/'Rangpur' lime combination produced longer branches than the others. The growth period of branches ranged from 25.5 to 37.8 days and was shorter in Paranavaí than in Londrina, for all scion/rootstock combinations. The results are discussed with regard to the edaphic-climatic characteristics of both sites.
Citrus sinensis; fluxes; tree growth
