Effect of pre-germination treatments on seed germination of Passiflora setacea DC (Passifloraceae)


 setacea seeds without aril, were submitted to pre-germination treatments: T1(control); T2 (pre-soaking in Promalin® solution [gibberellin (GA4+7) + N-(phenylmethyl)-1H-purine 6-amine (6-benzyladenine) both at a concentration of 18.8 g.L-1] bainMarie, 45 °C/20 min.; T3 (osmopriming with KNO3 2.6g.L-1 H2O, 25 °C/1 day, aeration); T4 2.6g.L- 1 °C/2 days, T5 (T3 followed by T2) and T6 (T4 T2). The initial moisture contents, ranging from 6.7% 8% did not differ each other (α 0.05). highest fresh mass increment 168h the content end germination test achieved T2, 40.9% 44.3%, respectively. lowest was T1 (13.1%). Osmopriming aeration contributed better water absorption than T1, but stimulate performance seeds. percentages speed indexes obtained (92% 8, 4595), (96% 11.7438) (94% 11.6728) as well mean times (11.73 days), (9.49 days) (8 .81 which statistically However, process took less time for seeds, 21 days. combination aryl removal phytohormone bain-marie °C/20min. or osmopriming stimulated P. seeds.