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Drought stress is one of the greatest problems facing agriculture in the semiarid regions and affects immediately the physiological processes and plant production. For that, irrigation is an essential practice to minimize effects of water deficit. Its appropriate management can to increase the farm income. This study aimed to evaluate to analyze the photochemical and productive performance of passion fruit (Passiflora edulis) hybrid ‘BRS Gigante Amarelo’ irrigated in a Brazilian semiarid region. It was studied four water replacement rates (33, 66, 100 and 133% of ETo) at the field conditions. A randomized blocks experimental design it was used with five replications. The fluorescence of chlorophyll a, yield and fruit quality it were studied. The photochemical efficiency of photosystem II have been changed along the day at high temperatures. Occurred vidential damage in PHS II. Water replacement between 100 and 133% of ETo (1032 mm year-1) promotes the best production rates and quality of the fruit, but the fruit size and productivity are reduced in replacements over 100% of ETo.

PHOTOCHEMICAL AND PRODUCTIVE PERFORMANCE OF YELLOW PASSION FRUIT IRRIGATED IN THE BRAZILIAN SEMIARID