The aim of this work was to verify the best period to collect the pollen of Passiflora alata, with respect to its greater viability. Were collected 35 flower buds, 7 from each horary of collect (8h40, one day before anthesis, 8h40, 10h45 and 16h00 , in the day of anthesis and 8h40, one day after anthesis). The tests were made by coloring and in vitro germination. It was used the completely randomized design with 5 treatments and 7 repetitions and the averages were compared by Tukey´s test at 5% of probability. The test of viability by coloring ranged of 69,64 (in the day of the anthesis, 16h00) to 75,91 % (one day before anthesis, 8h40). The percentage of germination ranged from 49,18 (24 hours after anthesis) to 62,65 % (in the day of antese, 10h45). The best moment of collecting the pollen, with respect to the best viability and germination, is 10h45, in the day of anthesis.
germination of the pollen tube; pollination; Alexander Test
