Fig 1.
Principal Component Analysis (A) and Bayesian clustering with STRUCTURE (B) of individual genotypes from 48 Cannabis accessions. Fibre and drug accessions are displayed in green and red respectively on the PCA. Ellipses illustrate 80% inertia of each accessions. Dots represent individuals, linked to their accessions (labelled within colored squares). On the STRUCTURE barplots, colors show the probability of assignment to each cluster (K = 2), perfectly distinguishing fibres from drugs.
Fig 2.
Genetic diversity within each Cannabis accession.
FIS: inbreeding coefficient; HO: observed heterozygosity; AR: allelic richness (scaled for 8 individuals). For drugs, main documented sativa/indica component are indicated.
Table 1.
Database auto-evaluation by assignment tests of random subsets of fibre and drug samples.
Values indicate the probabilities P of assignment (direct method) and inclusion to either groups (resampling method), as well as their standard deviations among replicate subsets (n = 10).
Table 2.
Assignment trial (direct method) of 340 test samples from known (bird food, known fibres and drugs) and unknown nature (industrial cultivars and police seizure).
We considered assignments “safe” where the probability of assignment P was above 0.95.