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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. 24, No. 1, 2014, pp. 79-85
Bioline Code: cf14008
Full paper language: English
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 24, No. 1, 2014, pp. 79-85

 en Araucaria angustifolia check for this species in other resources (Bertol.) Kuntze ALLELOPATIC ACTIVITY ON GERMINATION AND INITIAL GROWTH OF Lactuca sativa check for this species in other resources L.
Denardin da Silveira, Bruna; Tuyoshi Hosokawa, Roberto; Carlos Nogueira, Antonio & Padoin Weber, Veridiana

Abstract

The present study aimed to evaluate the possible allelopathic activities effects from Araucaria angustifolia check for this species in other resources on Lactuca sativa check for this species in other resources germination and initial growth. For this trial, lettuce seeds were used and aqueous extract extracted from the leaves of araucaria, with concentrations of 10%, 7.5%, 5.0% and 2.5%. The effect of these four concentrations was compared with distilled water (concentration 0%). Based on the collected data, percentage of germination (G%), germination speed index (GSI), average germination time (t), seedlings length and dried mass were determined. Results showed that aqueous extract from araucaria leaves has an inhibitory property on germination, germination speed index and initial growth in Lactuca sativa check for this species in other resources .

Keywords
tree seeds; allelopathy; forest management

 
 pt ATIVIDADE ALELOPÁTICA DE Araucaria angustifolia check for this species in other resources (Bertol.) Kuntze NA GERMINAÇÃO E CRESCIMENTO INICIAL DE Lactuca sativa check for this species in other resources L.
Denardin da Silveira, Bruna; Tuyoshi Hosokawa, Roberto; Carlos Nogueira, Antonio & Padoin Weber, Veridiana

Resumo

O presente estudo teve por objetivo avaliar as possíveis atividades alelopáticas de Araucaria angustifolia check for this species in other resources na germinação e crescimento inicial de Lactuca sativa check for this species in other resources . No experimento foram utilizadas sementes de alface e extrato aquoso extraído das folhas de araucária, com concentrações de 10%, 7,5%, 5,0% e 2,5%. O efeito destas quatro concentrações foi comparado com o de água destilada (concentração 0%). A partir dos dados coletados, determinou-se a percentagem de germinação (G%), índice de velocidade de germinação (IVG), tempo médio de germinação (t), comprimento e massa seca das plântulas. Os resultados demonstraram que o extrato aquoso das folhas de araucária possui propriedade inibitória na germinação, velocidade de germinação e no crescimento inicial de Lactuca sativa check for this species in other resources .

Palavras-chave
sementes florestais; alelopatia; manejo florestal

 
© Copyright 2014 - Ciência Florestal
Alternative site location: http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/index

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