Allelopathic effects of Cecropia pachystachya Trecul on germination and seedling growth of Lactuca sativa

作者：Pereira C K B; Carvalho C M; Souza I T; Serra N S J; Costa J G; Santana A E G^*

来源：Allelopathy Journal, 2017, 42(2): 263-277.

DOI：10.26651/allelo.j/2017-42-2-1122

• Allelopathic effects
• catechin
• Cecropia pachystachya
• embauba
• epi-catechin
• ethanol extracts
• germination
• Lactuca sativa
• lettuce
• quercetin
• seedling growth

This study evaluated the allelopathic activity of ethanol extracts from the roots, root bark, stems and stem bark of C. pachystachya on seed germination and seedling growth of Lactuca sativa. The ethanol extracts were prepared from dried powdered plant parts and dissolved in solvent mixture water and DMSO (0.1%). The concentration of each extract was calculated according to its solubility. The chemical composition of extract was determined using HPLC-DAD analysis. All extracts had allelopathic effects on lettuce seed germination and seedling growth. Stem and root bark extracts were very inhibitory to the development of radicle; the stem extract was also inhibitory to the development of hypocotyl. The stem bark and stem extracts were very inhibitory to germination. Chromatographic analysis showed the presence of quercetin, catechin and tormentic acid in the root, epicatechin and tormentic acid in the root bark, catechin, quercetin and tormentic acid in the stem and quercetin and tormentic acid in the stem bark extracts. At the tested concentrations, only epi-catechin and catechin inhibited the radicle development.

• 出版日期2017-11