CHEMOTAXONOMIC EVALUATION OF THE PAPAVER SECTION MACRANTHA

P. Tétényi
The section Macrantha conforming Goldblatt's consists of three species: P. orientale L; P. bracteatum Lindl.; P. pseudo-orientale (Fedde) Medw. Later Soviet botanists and Cullen reverted to the earlier systematic separations of Fedde (1909) i.e. there must be existing five taxa. Differences between data of experiences and opinions show that there is a need to systematize chemotaxonomically the section.

It must be taken into account the infraspecific polychemism given by the diversity of biosynthetic ways to build up alkaloids. Both physiological interventions can be realized: differentiated plant taxa choose alternatives of routes and can exert blockage too on these routes. This combination of alternations and blockings developed to various chemosyndromes whose similarities lead to systematize chemotaxonomically the totality of this section. Chemical differences of ontogenetic stages are associated with chemical differentiation of taxa, to get a unified biological phenomenon.

By reason of their chemotaxa P. orientale should be considered as more ancestral. Younger species, however, are able to block their biosynthetic routes. Most differentiated chemotaxa are to found with P. pseudo-orientale, but P. bracteatum and P. lasiothrix Fedde are well-developed, also; their alkaloid chemistry is able to realize blocking of biosynthetic ways.

Tétényi, P. (1986). CHEMOTAXONOMIC EVALUATION OF THE PAPAVER SECTION MACRANTHA. Acta Hortic. 188, 35-48
DOI: 10.17660/ActaHortic.1986.188.3
https://doi.org/10.17660/ActaHortic.1986.188.3

Acta Horticulturae