Aspectos morfológicos do processo germinativo de Maximiliana maripa (Aublet) Drude

Abstract

Knowledge on the morphology of the germination process is essential for analysis of the vegetative cycle of species. Seeds of Maximiliana maripa (Aublet) Drude were germinated with the objective of describing the morphological aspects at different germination stages. Four hundred fruits were collected: 300 for the morphometric study of the pyrenes and their seeds, and 100 for the germination process description. Four replications of 25 pyrenes were used in the germination tests. Germination of M. maripa was characterized as remote tubular. Protrusion of the germination bud occurred nineteen days after sowing. Shortly after, there was a white cylindrical beam of the cotyledon petiole; and seven days later, there was a beige cylindrical primary root. After that, the secondary and adventitious roots, the fi rst and second sheaths, and the fieuphyll (plantule) emerged. Simple, lanceolate plantules with parallel venation were formed forty days after sowing.