Cytogenetic Characterization of Three Populations of Hedeoma multiflorum Benth. (Lamiaceae) Native from Cordoba, Argentina

摘要

Hedeoma multiflorum (Lamiaceae) commonly known as "tomillito de las sierras" is a native aromatic herb used in folk medicine for its stimulant and digestive properties. Plants are collected in the wild; their uncontrolled exploitation exceeds their rate of natural regeneration leading to the risk of genetic erosion. The aims of this work were to determine the chromosome number of three populations of Hedeoma multiflorum native to Cordoba (Argentina) and characterize them from the meiotic point of view. Most of the somatic cells observed showed the chromosome number 2n=72. In relation to their meiotic behavior, irregularities as presence of univalent, laggards, micronucleus and occurrence of cytomixis were observed. The characterization of the native germoplasm of this valuable aromatic and medicinal species is fundamental to achieve its sustainable handling and conservation.