Effects of Drought Stress on Flower Number in ‘Summer Queen’ Passion Fruit

To determine the effects of drought stress, especially light on flower number in passion fruit, one-year-old fruit plants grown 7.5 L plastic pots were subjected to different soil water content treatments, namely wetness, drought, and heavy for two months. Average, maximum, minimum contents (v/v) 44, 47, 41% wetness treatment, 23, 40, 11% treatment 11, 33, 6% treatment. Flower decreased as strength stress increased, although nodes buds did not. Flowering periods from June 27 July 19 26 16 with three peaks around 1, 6, 13. In flowering period was 11 18 one peak. The bud not affected by stress. Light suppress vegetative growth, such vine length, leaf number, or photosynthetic rate, did. Stomatal conductance suppressed only at 12:00PM throughout day. Leaf potential 3:00PM, but drought. visible wilting observed, wilted before irrigation, they recovered about 15 min after irrigation. conclusion, even which reduced fruit. Drought development differentiation.