Resumo

PEREZ-AMADOR, MC et al. Phototoxic compounds in 3 Dyssodia species (Asteraceae): (with 1 figure). Phyton (B. Aires) [online]. 2004, vol.73, pp.115-117. ISSN 1851-5657.

From the root of Dyssodia tagetoides T. & G. two phototoxic compounds were isolated,a polyacetylene ester and a thiophene ester, which were used as markers of the genus.    On the other hand, an intraspecific and interspecific comparison of the chromatografic profiles of D. porophylla (Cav.) Cav. and D. papposa (Vent.) Hitche stems and roots was made. The profiles showed great similarity as well as the spots corresponding to the markers thus establishing a relationship between the 3 species.

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