Effects of light and temperature on seed germination in Cecropia hololeuca Miq. (Cecropiaceae)

Brazilian Archives of Biology and Technology

Simone Godoi²  Massanori Takaki¹ 

[1] ,Universidade Metodista de Piracicaba Faculdade de Ciências; Matemáticas e da Natureza Piracicaba SP ,Brazil

关键词: Cecropia hololeuca;    germination;    alternating temperature;    phytochrome;    light;   

DOI  :  10.1590/S1516-89132004000200004

来源: SciELO

【 摘 要 】

Seeds of Cecropia hololeuca were submitted to regimes of constant and alternating temperatures, associated with photoperiods of white light, "shade light" and continuous darkness under controlled conditions in laboratory. Seeds did not germinate at constant temperatures of 10°C to 20°C and above 35°C. Seeds only germinated in the darkness when the temperature was alternated. "Shade light" inhibited germination. We concluded that the regime of alternating temperatures suppressed the light effects on seed germination of this species.

【 授权许可】

CC BY-NC   
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