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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 15, No. 1, 2005, pp. 87-92 		Bioline Code: cf05008
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 15, No. 1, 2005, pp. 87-92

 en EFFECTS OF LIGHT AND TEMPERATURE ON Tabebuia serratifolia check for this species in other resources (Vahl) Nich, Tabebuia chrysotricha check for this species in other resources (Mart. ex DC.) Standl. AND Tabebuia roseo-alba check for this species in other resources (Ridl) Sand – Bignoniaceae SEED GERMINATION
dos Santos, Débora Leonardo; Sugahara, Viviana Yoshie & Takaki, Massanori

Abstract

Tabebuia serratifolia, Tabebuia chrysotricha and Tabebuia roseo-alba (Bignoniaceae), are an important ornamental and wood trees in Brasil. The effects of light and temperature in the germination of Tabebuia serratifolia, Tabebuia chrysotricha and Tabebuia roseo-alba seeds were studied in the present work. The results indicated that the species present light insensitive seeds the and optimum temperature was between 20° and 30°C, the maximum temperature between 35° and 40°C and minimal temperature between 10° and 15°C for Tabebuia chrysotricha and Tabebuia roseo-alba and below 10°C for Tabebuia serratifolia.

Keywords
Tabebuia; seed germination; temperature

 
 pt EFEITOS DA LUZ E DA TEMPERATURA NA GERMINAÇÃO DE SEMENTES DE Tabebuia serratifolia check for this species in other resources (Vahl) Nich, Tabebuia chrysotricha check for this species in other resources (Mart. ex DC.) Standl. E Tabebuia roseo-alba check for this species in other resources (Ridl) Sand - Bignoniaceae
dos Santos, Débora Leonardo; Sugahara, Viviana Yoshie & Takaki, Massanori

Resumo

As espécies de ipê ( Tabebuia serratifolia check for this species in other resources , Tabebuia chrysotricha check for this species in other resources e Tabebuia roseo-alba check for this species in other resources ) são árvores de interesse econômico madeireiro, ornamental e indicadas em programas de reflorestamentos. Neste trabalho, foram testadas as temperaturas constantes de 10°C a 40°C, em condições de luz e escuro dentro de germinadores. Os resultados indicaram que as sementes das três espécies de Tabebuia são indiferentes à luz, com a faixa de temperatura ótima entre 20° e 30°C, a temperatura máxima entre 35° e 40°C e a temperatura mínima entre 10°e 15°C para Tabebuia chrysotricha e Tabebuia roseo-alba e abaixo de 10°C para Tabebuia serratifolia.

Palavras-chave
Tabebuia; germinação de sementes; temperatura.

 
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