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Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913On-line version ISSN 1678-4324

Abstract

SOCOLOWSKI, Fábio  and  TAKAKI, Massanori. Germination of Jacaranda mimosifolia (D. Don - Bignoniaceae) seeds: effects of light, temperature and water stress. Braz. arch. biol. technol. [online]. 2004, vol.47, n.5, pp.785-792. ISSN 1678-4324.  http://dx.doi.org/10.1590/S1516-89132004000500014.

Investigations were carried out to study the effect of light, temperature and water stress on the germination of seeds of Jacaranda mimosifolia which showed the minimum and maximum germination temperature at 15 and 40º C, respectively. The optimum temperature was 25º C with high percentage and germination rate. Slight promotive effect of white light was observed. Under water stress conditions the effect of light was high but at optimum temperature no effect of light was observed. At -0.9MPa few seeds germinated.

Keywords : Jacaranda mimosifolia; seed germination; phytochrome; water stress; light sensitivity.

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