Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae)
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Data
2001-01-01
Autores
Leite, ITD
Takaki, M.
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Editor
Inst Tecnologia Parana
Resumo
The temperature range of germination of seeds of Muntingia calabura L. was 15-35 degreesC and the optimum temperature at 35 degrees where more seeds germinated at short period. The fluence response curves demonstrated the involvement of phytochrome in the control of germination through the low fluence response. The effect of photoperiod showed that the species need long daily exposures to white light and that shade light inhibited completely seed germination, confirming as pioneer species that colonized only large gaps in the forest.
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seed germination, phytochrome, light, temperature, Muntingia calabura
Como citar
Brazilian Archives Of Biology And Technology. Curitiba-parana: Inst Tecnologia Parana, v. 44, n. 3, p. 297-302, 2001.