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Landrace.wiki

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

The landrace map

Accessions, coloured by the status of their seed lots, with growing places and archaeological sites. Another 571 accessions have no coordinates yet.

Interactive map of landrace accessions, growing places and archaeological sites. It is unavailable here; browse the accession list instead.
Seed lot status
UrgentAt riskSecureHeld in a genebank, not distributedNo data yet, or too little to rateWhat these mean
364of the 1144 accessions on this map have a seed lot rated Urgent. See which populations to grow out first
Places
Growing region
Eastern Ghats
India
Hill districts on both sides of the Andhra Pradesh–Odisha border where cannabis is grown for ganja
Chamarajanagar
Karnataka · India
Chamoli
Western Himalayas · India
Champasak
Southern Laos · Laos
Changzhi
Shanxi · China
A cannabis plant in flower photographed close up, its leaves and bracts sharp against a blurred green hillside
Picture of the day
Landrace cannabis cultivated by locals in the village fields of Atolang.
Atolang (appellation) · Éloïse, 13 October 2022 · About this photograph
Research

Latest publications

Venue: Agriculture and Natural Resources
30 Sep 2026
Compares selfing with intercrossing for producing feminized seed from two Thai landrace accessions of Hang Kra Rok cannabis, one from Bangkok and one from Sakon Nakhon. Female cuttings were treated with colloidal silver to induce male flowers, and the progeny were grown in a plant factory with artificial lighting. Both selfed lines and the Sakon Nakhon by Bangkok cross gave 100% female plants, while the reciprocal cross produced one hermaphrodite (5.6%). Dry inflorescence weight did not differ between treatments. The Bangkok selfed line had the highest THC content at 6.58%. The plants were grown under artificial light, so the chemistry is not field chemistry.
Map of reported cannabis events. The interactive map is unavailable here; see the current events portal instead.
New here

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Learn what an accession is, how to read its fields and maps, and what the status of its seed lot means.

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