2008
DOI: 10.1590/s1676-06032008000200006
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Effect of light and temperature on seed germination in Tibouchina mutabilis (Vell.) Cogn. (Melastomataceae)

Abstract: TAKAKI, M. 2008. Effect of light and temperature on seed germination in Tibouchina mutabilis (Vell.) Cogn. (Melastomataceae). Biota Neotrop. 8(2): http://www.biotaneotropica.org.br/v8n2/en/ abstract?article+bn00908022008. Abstract:The effect of light and temperature on Tibouchina mutabilis seed germination was analyzed by isothermic incubations in the range of 10 to 40 °C, with 5 °C intervals under both continuous white light (32.85 molm -2 s -1 ) and darkness and alternating temperatures (15-20; 15-25; 15-30;… Show more

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Cited by 14 publications
(9 citation statements)
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References 30 publications
(46 reference statements)
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“…Embryoless seeds seem to be common in Melastomataceae (Zaia & Takaki ; Simão et al . ), and although embryo abortion is the alleged cause (Simão et al . ), the functional significance of embryoless seeds (if any) remains unclear.…”
Section: Discussionmentioning
confidence: 99%
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“…Embryoless seeds seem to be common in Melastomataceae (Zaia & Takaki ; Simão et al . ), and although embryo abortion is the alleged cause (Simão et al . ), the functional significance of embryoless seeds (if any) remains unclear.…”
Section: Discussionmentioning
confidence: 99%
“…), and although embryo abortion is the alleged cause (Simão et al . ), the functional significance of embryoless seeds (if any) remains unclear. By ignoring such high levels of embryoless seeds in T. laniflora , the low germinability values observed here would wrongly lead to the conclusion that seeds are dormant.…”
Section: Discussionmentioning
confidence: 99%
“…Por isso, estas sementes podem ser caracterizadas como fotoblásticas neutras ou indiferentes à luz, por germinarem na presença luz e ausência (Santos et al 2005) As sementes germinaram satisfatoriamente nas seis temperaturas testadas, com exceção da temperatura de 40 °C. No entanto, a faixa entre 25 a 30 °C pode ser considerada ótima, pois possibilitou alta germinabilidade e menor tempo médio de germinação (Camara et al 2008;Simão & Takaki 2008).…”
Section: Discussionunclassified
“…Em geral, a alternância de temperatura é um mecanismo importante para aquelas espécies que não possuem sementes que germinam sob temperatura constante, revelando capacidade de adaptação e sucesso no estabelecimento, no ambiente que ocorrem (Ekstam et al 1999;Abdo & Paula 2006;Simão & Takaki 2008).…”
Section: Discussionunclassified
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