Publication: Densidades de palha e condições de luminosidade na germinação de sementes de Euhphorbia heterophylla
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Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Universidade Estadual de Londrina (UEL)
Type
Article
Access right
Acesso aberto
Abstract
It was studied the influence of sugarcane straw density and light conditions on the germination of seeds of Euphorbia heterophylla under controlled conditions. The experimental design was completely randomized design with four replications of 50 seeds, and the treatments were arranged in a 6 x 5 factorial, with six amount of sugarcane straw (0, 8, 10, 12, 14 and 16 t ha(-1)) and 5 types of light (constant light, constant darkness, alternating light and dark, short red and far red). The seeds were germinated in plastic type boxes covered by overlapping layers of straw and kept in germination. Assessments of germination were daily computing the normal seedlings, when they presented protusion roots visible and calculated the germination speed index (IGS). It was observed that the increase of different densities of straw and different wave lengths provided germination ranged from 83 to 97% and IGS between 9.85 to 15.36. The different densities of straw and wavelength did not suppress the germination of E. heterophylla. Therefore, the species was insensitive to light, so the presence of raw sugarcane system can't be considered a potential tool for controlling this species.
Description
Keywords
Wild poinsettia, raw sugarcane, seedlings, short red, far red
Language
Portuguese
Citation
Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 33, n. 3, p. 867-872, 2012.
