Germinação de sementes de melão-de-são-caetano sob variação de água, luz e temperatura

• Autor(a) principal: Parreira, Mariana Casari [UNESP]
• Data de Publicação: 2011
• Outros Autores: Cardozo, Nilceu Piffer, Fidelis Giancotti, Paulo Roberto [UNESP], Aguiar da Costa Alves, Pedro Luis [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.seer.ufu.br/index.php/biosciencejournal/article/view/7617; http://hdl.handle.net/11449/1115
• topic: Momordica charantia L; Biology; Weeds

The purpose of this study was to evaluate germination of Momordica charantia L. seeds under different conditions of: water availability (0.0, -0.2, -0.4, -0.6, -0.8 and -1.0 MPa), temperature (10, 15, 20, 25, 30 and 35 degrees C) and quality of incident light (filter dark, red, green, yellow, red off, blue, orange and without filter). For each variable evaluated, experiments were carried out in a completely randomized design with four replicates kept under controlled conditions (germination chamber). There were higher percentages of germination under conditions of mild water restriction (-0.2 MPa) and temperatures around 25 degrees C, regardless of the quality of light. Temperatures below 20 degrees C and above 30 degrees C reduced germination, although lower temperatures had strongly effects on germination. Water availability lower than -0.2 MPa strongly reduced germination, which was inhibited in the treatments of -0.8 and 1.0 MPa.