Chromosomal Characteristics and Occurrence of Main Alkaloids inDatura stramoniumandDatura wrightii

Abstract

The population of Datura stramonium L. var. tatula Torr and Datura wrightii Regel was heterogenous in the numerical and structural composition of karyotypes. Datura wrightii Regel contained, as well as aneuploid sets, a 35% karyotype with a diploid set of chromosomes (2n = 24); there were no chromosomes with satellites and there were 1-2 microchromosomes in 29.6% of the metaphases. Datura stramonium L. var. tatula Torr included biotypes with a chromosome number of 21-25; in 88.5% of the metaphases there were chromosomes with satellites and 60% of the metaphases contained 1-3 microchromosomes. According to the content of the main alkaloids Datura stramonium L. var. tatula Torr can be considered a predominantly hyoscyamine type, Datura wrightii Regel also containing scopolamine.

Scopolia carniolica var. hladnikiana: Alkaloidal Analysis and Potential Taxonomical Implications

“…ANOVA p values were 0.800, 0.399, and 0.844 for scopolamine, atropine, and total alkaloids, respectively. Previous research with related plants showed demonstrably different alkaloidal levels between varieties grown in the same conditions, so this is either not a trait seen in S. carniolica , or the effect is concealed by other (random or environmental) effects, or the two varieties are not distinct [ 26 , 27 ].…”

Détermination des teneurs en atropine et scopolamine de différentes espèces sauvages et ornementales du genreDatura

“…Une étude de 1981 fait mention de teneurs en hyoscyamine et scopolamine élevées pour Datura wrightii dans les racines et de teneurs en scopolamine importantes dans les feuilles [15]. Les dosages ont été effectués par une méthode semi-quantitative par chromatographie sur couche mince mais Au contraire, les rapports d'intoxication avec Datura stramonium, Datura inoxia ou même avec certaines espèces de brugmansias sont nombreux.…”