Melaleuca alternifolia Cheel. is an aromatic species of high economic interest due to the presence of essential oil in its leaf tissue. However, its seeds have low germinative potential, which has made difficult the obtaining of new genetic materials and the technological advance for production in Brazil. The present work aimed to determine a suitable methodology to evaluate the germinative potential of Narrow-leaved Paperbark seeds. Thus, two experiments were carried out, one under lab conditions and other in greenhouse, in order to evaluate different treatments to stimulate seed germination. Experimental design was completely randomized, with four replicates; nine treatments were used in the lab and other seven in greenhouse. Means were compared by the Tukey's test at 5% significance. The obtained results suggest that pre-imbibition of seeds for 18h in water is the most suitable procedure to evaluate the germinative potential of Narrow-leaved Paperbark seeds. Under greenhouse conditions, this treatment can be used with the substrates sand or Plantmax®.
dormancy; physiological quality; gibberellin
