Avaliação alelopática de extratos etanólicos de Copaifera sabulicola sobre o desenvolvimento inicial de Lactuca sativa, Lycopersicum esculentum e Zea mays

Biotemas

Farley Silva Santana²  Rafael Soares Pozzi Malheiros²  Manoel Viana Linhares Neto¹  Ana Maria Mapeli²  Luciana Lucas Machado² 

[1] Universidade Federal da Bahia (UFBA) - Instituto de Ciências Ambientais e Desenvolvimento Sustentável (ICADS);Instituto de Ciências Ambientais e Desenvolvimento Sustentável (ICADS) - Universidade Federal da Bahia.

关键词: Bioensaios;    Cerrado;    Germinação;    Metabólitos secundários;   

DOI  :  

学科分类：生物科学（综合）

来源: Universidade Federal de Santa Catarina * Centro de Ciencias Biologicas

【 摘 要 】

http://dx.doi.org/10.5007/2175-7925.2014v27n3p23 This paper aimed to evaluate the allelopathic potential of ethanol extracts from stem and leaves ofCopaifera sabulicolaon seed germination and seedling growth ofLactuca sativaandLycopersicum esculentum , as well as to evaluate the allelopathic effect of these extracts on seedling germination and growth ofZea mays , through bioassays under laboratory conditions. The extracts were tested at the concentrations 0, 250, 500, and 1,000 mg.L -1 . We evaluated the germination percentage, germination average speed, germination speed index, and seedling average length. All parameters underwent variance analysis, and the mean values were compared by means of Scott-Knott test (p �? 0.05). We found out that, inL. sativa , the extract from stem promoted significant stimuli on germination percentage and root growth, while the extract from leaves only stimulated root growth. InL. esculentum , the extract from stem promoted significant stimulus on hypocotyl and root growth, in turn, the extract from leaves stimulated only root growth. InZ. mays , both extracts significantly inhibited germination. Therefore, we found out the allelopathic potential of ethanol extracts ofC. sabulicolaonL. sativaandL. esculentum , as well as inhibitory allelopathic effect onZ. mays .

【 授权许可】

Unknown