RT journal article
T1 Phytotoxicity of Cardoon (Cynara cardunculus) Allelochemicals on Standard Target Species and Weeds
A1 Rial Cumbrera, Carlos
A1 Novaes, Paula
A1 González Molinillo, José María
A1 Varela Montoya, Rosa María
A1 González Molinillo, José María
A1 Macías Domínguez, Francisco Antonio
A2 Química Orgánica
K1 Allelopathy
K1 cardoon
K1 aguerin B
K1 cynaropicrin
K1 grosheimin
K1 guaianolide
K1 sesquiterpene lactones
AB Cardoon (Cynara cardunculus L.) is a native plant to the Iberian Peninsula and the European Atlantic coast and invasive in American environments. Different solvents were used to perform cardoon extracts that were tested in phytotoxic bioassays. The ethyl acetate extract had the highest inhibitory activity so this was tested on the germination and growth of standard target species (lettuce, watercress, tomato, and onion) and weeds (barnyardgrass and brachiaria). The ethyl acetate extract was very active on root growth in both standard target species and weeds and it was therefore fractionated by chromatography. The spectroscopic data showed that the major compounds were sesquiterpene lactones. Aguerin B, grosheimin, and cynaropicrin were very active on etiolated wheat coleoptile, standard target species, and weed growth. The presence of these compounds explains the bioactivity of the ethyl acetate extract. The strong phytotoxicity of these compounds on important weeds shows the potential of these compounds as natural herbicide models.
PB JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
YR 2014
FD 2014-06
LK http://hdl.handle.net/10498/20313
UL http://hdl.handle.net/10498/20313
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026