Potencial alelopático de Tynanthus micranthus Corr. Mello ex. Schum. (Bignoniaceae) sobre diásporos de Lactuca sativa L. / Allelopathic effects of Tynanthus micranthus Corr. Mello ex. Schum. (Bignoniaceae) on diaspores of Lactuca sativa L.
Cansian, Fernanda Colombi; Lima, Cristina Peitz de; Zortéa, Francis Merino; Miguel, Obdulio Gomes; Miguel, Marilis Dallarmi.
Rev. ciênc. farm. básica apl
; 34(1)mar. 2013.
Artigo
em Português
| LILACS | ID: lil-672229
Allelopathic agents are secondary metabolites produced by plants and microorganisms that have positive or negative effects on the growth and development of biological systems. The aim this study was to assess the allelopathic effects of Tynanthus micranthus on diaspores of Lactuca sativa L. The germination speed indices of the diaspores and the percent growth of seedlings were determined in the presence of various concentrations of the samples. The chloroform fraction of the stem inhibited germination at a concentration of 0.8 mg and a hydroalcoholic fraction of the leaves increased germination at all concentrations analyzed. The chloroform fraction of the stem stimulated hypocotyl growth at all concentrations tested. These results suggest that the species has active compounds capable of interfering with biological systems.
Biblioteca responsável:
BR33.1
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