Genetic resources of Cannabis sativa L. at the Institute of Natural Fibres and Medicinal Plants in Poznań

GRAŻYNA MAŃKOWSKA, LIDIA GRABOWSKA

Abstract

Hemp (Cannabis sativa L.) species belongs to the Hemp family (Cannabaceae), Cannabis genus. Hemp is considered as a species easily adapting to the changing environment conditions. It is characterized by plentiful of forms showing considerable biological and morphological differences and different economical value. Development of such big differentiation took place under the effect of geographical, climatic and soil conditions as well as human activity which aimed at developing and stabilizing important qualities of hemp. The collection of hemp genus held at the Institute of Natural Fibres in Poznań contains about 150 accessions. The collection holds both mono- and dioecious forms of hemp from zones represented by different soil and climatic conditions, local ecotypes and breeding lines with stabilized genotype that are exceptional in respect of one parameter, for instance Δ9THC, yield, quality of fiber, composition of fatty acids, etc. In 2000, the INF genetic resources were transferred to new facilities providing excellent conditions of storage. The long-term storage of seeds requires low air temperature, low seed moisture content (7–8%) and proper relative air humidity (below 55%). The air-dried seeds (7% of moisture content) are packed hermetically in a thermo-sealed aluminum foil and sent to core collection stored in a chamber at +4.0oC or to reserve bank where the 5-g samples are stored for a long time. Key words: genetic resources, monoecious hemp, dioecious hemp, accession, collection, accession evaluation
Number of visits: 1995194