The research was carried out with the aim to evaluate the stress caused by water deficiency on a chlorophyll a fluorescence in 'Ponkan' mandarin and 'Tahiti' acid lime plants. The plants were grafted on Rangpur lime submitted to water stress in growth chamber under controlled conditions for induce the flowering. the stress caused by water deficiency submitted in plants of mandarin 'Ponkan' and 'Tahiti' lime decreased the potential quantum efficiency of photosystem II (Fv/Fm). After the irrigation the plants showed fluorescence parameters values similar to those prior to stress submitted by water deficiency.
Citrus reticulata Blanco; Citrus latifolia Tanaka; photosystem II efficiency
