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A neutral, independent encyclopedia and open conservation database for landrace cannabis populations, their genetics and the traditional knowledge that sustains them.

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Critical 78High 108Medium 175Low 33Not yet assessed 9

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403Landrace accessions

22Growing areas

11Growing regions

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46%of documented landrace accessions are assessed as critical or high conservation priority. Help document them

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An accession is a sample or observation recorded at a specific place and time. An appellation is a locally recognised name tied to place and tradition.

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Featured accessionZOM-THA-WES-0420250001

Thailand Collected 2024 Landrace Critical priority

Kroeng Krawia General Population 2024 is a domesticate landrace cannabis accession collected by Éloïse of the Zomia Collective in Kanchanaburi Province, Thailand.

PopulationShort-day

CollectionSeedsPoint of Origin

PreservationZomia Genetic Library

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Places

Featured growing regions and areas

Growing region

The Dooars

Eastern Plains

Terai belt region where traditional cannabis cultivation faces modernization pressures

Chamurchi-Laxmi Duar

The Dooars

Chapramari

The Dooars

Gorumara

The Dooars

Jaldapara

The Dooars

All 11 growing regions · All 22 growing areas

Featured article

Phylogenetics of Cannabis is the reconstruction of the evolutionary relationships of the genus Cannabis from molecular data. It addresses three questions: the placement of Cannabis among the genera of the family Cannabaceae, the genetic structure within the genus, and the genomic signatures left by domestication. Successive methods resolve these relationships at different depths, and the picture has sharpened as whole-genome sequencing has replaced the biochemical and marker-based approaches used earlier.

Molecular evidence informs the long-running dispute over how many species the genus contains, but has not settled it; recent genomic reviews lean toward a single species while treating the question as open, and the rank debate itself is covered in Cannabis taxonomy. How much phylogenetic structure can be recovered is limited by two features of the plant: the genus is fully interfertile, so gene flow between lineages is easy, and four decades of intentional hybridisation between drug-type populations have overwritten much of the older structure in cultivated material. read more →

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Research

18 Jul 2026 · Journal of Cannabis Research

Terroir-driven phenolic chemotypes and antioxidant/antimicrobial activities of Beldia (Cannabis sativa L.) seed extracts

Abstract Geographical variation in the phenolic composition and bioactivity of Moroccan Beldia (Cannabis sativa L.) seeds remains insufficiently characterized, limiting their rational valorization as bioactive resources. This study investigated aqueous extracts from defatted seeds collected in Ketama, Taounate, and Ouazzane using HPLC–DAD phenolic profiling, antioxidant and antimicrobial assays, and molecular docking. Data are reported as mean ± SD (n = 3), and regional differences were evaluated by one-way ANOVA followed by Tukey’s test when applicable. Clear regional discrimination was observed. Ouazzane gave the highest extraction yield (8.08 ± 0.24%), total phenolic content (16.13 ± 0.48 mg GAE/100 g DM), total flavonoid content (6.78 ± 0.20 mg QE/100 g DM), and total antioxidant capacity (565.80 ± 5.90 mg AAE/g), whereas Ketama showed the strongest DPPH scavenging activity (IC₅₀ = 10.25 ± 0.03 µg/mL). HPLC–DAD revealed distinct chemotypes dominated by 4-hydroxybenzoic acid (33.26–36.63%), with Taounate enriched in vanillic acid (35.00%) and caffeic acid (20.44%). Antimicrobial assays showed the best MIC values against Micrococcus luteus (0.50 ± 0.01 mg/mL) and Geotrichum candidum (0.12 ± 0.00 mg/mL). Docking highlighted flavonoid-type constituents as the most plausible active contributors, with catechin hydrate and rutin showing the strongest affinity toward CYP51 (-9.6 kcal/mol). Moroccan terroir strongly shapes the functional profile of Beldia seed extracts and supports region-guided sourcing for future bioactive applications.

Source

1 Jul 2026 · Plant Disease

Screening Diverse Cannabis sativa Germplasm for Resistance to Golovinomyces ambrosiae

Source

30 Jun 2026 · Acta Theologica

Cannabis Sativa, religion and society: Historical, medicinal, legal, and sacramental perspectives

Source

28 Jun 2026 · International Journal of Drug Policy

Value capture in the emerging medical cannabis global value chain: insights from South Africa

Source

19 Jun 2026 · bioRxiv

Sex chromosome-aware GWAS reveals XY-linked agronomic architecture and breeding targets in cannabis