Artículos de revistas
Overcoming dormancy and establishment of normal and abnormal seedlings for seedling production of Ochroma pyramidale (Cav. ex Lam.) Urb
Fecha
2016-01-01Registro en:
Iheringia Serie Botanica. Porto Alegre: Fundacao Zoobotanica Rio Grande Sul, Museu Ciencias Naturais, v. 71, n. 3, p. 269-276, 2016.
0073-4705
WOS:000392502800006
Autor
Universidade Estadual Paulista (Unesp)
Inst Nacl de Pesquisas da Amazonia
Universidade Federal de Santa Catarina (UFSC)
Universidade Federal de Mato Grosso do Sul (UFMS)
Univ Estado Mato Grosso
Institución
Resumen
Ochroma pyramidale (Cav. ex Lam.) Urb has great economic importance due to fast growth have, tegument dormancy, and variation in the germination process, where dormancy overcoming is fundamental in the study of seedlings. The aim of this study was to describe the external morphology of early stage development and test pre-germination treatments with hot water and sulfuric acid, under presence and absence of light, at different temperatures, as well, as to assess the establishment of normal and abnormal seedlings. For this there were five methods of scarification, three conditions of temperatures associated with two light regimes, and in nursery; the establishment of normal and abnormal seedlings was evaluated. Germination was classified as epigeal phanerocotylar, the treatment with immersion in water 80 degrees C and H2SO4 120 '' was the most suitable to overcome dormancy, the optimal temperature was 30 degrees C. Normal and abnormal seedlings have high capabilities of establishment.