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BIBTEX RIS

PHYTOTOXIC POTENTIAL OF THE GEOPROPOLIS EXTRACTS OF THE JANDAIRA STINGLESS BEE ( Melipona subnitida ) IN WEEDS

2017; UNIVERSIDADE FEDERAL RURAL DO SEMI-ARIDO; Volume: 30; Issue: 4 Linguagem: Inglês

10.1590/1983-21252017v30n407rc

ISSN

1983-2125

Autores

Daniel S. Pereira, João Paulo de Holanda Neto, Mozaniel Santana de Oliveira, Natanael Santiago Pereira, Patrício Borges Maracajá, A. P. da S. Souza Filho,

Tópico(s)

Phytochemistry Medicinal Plant Applications

Resumo

ABSTRACT The objective of the present research is to characterize the phytotoxic activity of geopropolis from the Jandaira bee (Melipona subnitida Ducke) in the state of Ceará in Northeast Brazil and to analyze its effects. Extracts were prepared in 80% v/v grain alcohol at 0.25, 0.5, 0.75, and 1.0%. Their effects were determined on seed germination, radicle elongation, and hypocotyl growth of the pasture weeds malícia (Mimosa pudica) and mata-pasto (Senna obtusifolia). Extract phytotoxicity varied as functions of plant species, application dosage, and plant organ. M. pudica was more sensitive to the inhibitory effects of geopropolis than S. obtusifolia. There was a phytotoxic effect of 50% (PE50) for S. obtusifolia in terms of seed germination and in rootlet development near the maximum applied concentrations. M. pudica had PE50 and PE90 at the minimum concentration (0.25%) and near the maximum (1.00%), respectively. Thus, geopropolis extracts from the Jandaira bee (M. subnitida) are potentially phytotoxic to certain plant species.

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