Download f1 canada 201112/19/2023 Hemp fibre was used for textile production in China more than 6000 years BP (before present). From its site of domestication in Central Asia, the cultivation of cannabis spread in ancient times throughout Asia and Europe and is now one of the most widely distributed cultivated plants. (marijuana, hemp Cannabaceae) has been used for millennia as a source of fibre, oil- and protein-rich achenes ("seeds") and for its medicinal and psychoactive properties. One of the earliest domesticated plant species, Cannabis sativa L. Its availability will aid the development of therapeutic marijuana strains with tailored cannabinoid profiles and provide a basis for the breeding of hemp with improved agronomic characteristics. The availability of the Cannabis sativa genome enables the study of a multifunctional plant that occupies a unique role in human culture. However, single nucleotide variant analysis uncovered a relatively high level of variation among four cannabis types, and supported a separation of marijuana and hemp. Resequencing the hemp cultivars 'Finola' and 'USO-31' showed little difference in gene copy numbers of cannabinoid pathway enzymes. The exclusive occurrence of Δ 9-tetrahydrocannabinolic acid synthase in the Purple Kush transcriptome, and its replacement by cannabidiolic acid synthase in 'Finola', may explain why the psychoactive cannabinoid Δ 9-tetrahydrocannabinol (THC) is produced in marijuana but not in hemp. Comparison of the transcriptome of Purple Kush with that of the hemp cultivar 'Finola' revealed that many genes encoding proteins involved in cannabinoid and precursor pathways are more highly expressed in Purple Kush than in 'Finola'. We report a draft haploid genome sequence of 534 Mb and a transcriptome of 30,000 genes. We sequenced genomic DNA and RNA from the marijuana strain Purple Kush using shortread approaches. The molecular biology underlying cannabinoid biosynthesis and other traits of interest is largely unexplored. Selective breeding has produced cannabis plants for specific uses, including high-potency marijuana strains and hemp cultivars for fiber and seed production. Cannabis sativa has been cultivated throughout human history as a source of fiber, oil and food, and for its medicinal and intoxicating properties.
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