Germinação de sementes de maracujá-doce (Passiflora alata Curtis): Fases e efeito de reguladores vegetais
Year: 2008
Type: article
Abstract: Sweet passion fruit (Passifl ora alata Curtis) germination: Phases and effect of plant growth regulator. This work aimed to characterize Passifl ora alata germination phases and evaluate the effects of GA3 and GA4+7, associated with phenylmethylaminepurine, on P. alata seed germination. Two experiments were conducted. In the fi rst, two treatments were carried out: seeds submerged in distilled water in a Becker and seeds conditioned in containers on fi lter paper soaked in distilled water; fi ve replications of 25 seeds were used. The moisture level and the percentage of germination (%G) were evaluated. In the second, six treatments and fi ve replications of 25 seeds for each regulator were used. The seeds were imbibed in 0, 50, 100, 150, 200 and 250mg.L-1 of GA3 and GA4+7, associated with to phenylmethylaminepurine, for 11 hours. The seeds were sown in black containers and deposited in to the germination chamber. The numbers of germinated and dormant seeds were evaluated daily. The percentage of germination, the percentage of dormant seeds, and the mean germination time (TMG) were estimated. Signifi cant differences in the germination phases between the methods were verifi ed. The germination was affected by the regulators with an increase in the percentage of germination and a reduction in the mean germination time. The highest values were observed with 250mg.L-1 of GA4+7 plus phenylmethylaminepurine.
Source: Biotemas
Institution: Universidade Estadual Paulista (Unesp)
Language: Portuguese
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $66
OpenAlex ID: W2078061782