Here are a few suggestions on how to use RSC heirloom lines to create your own medical cannabis strain
CBD is now seen by many experts and afficionados as the most important of the cannabinoids for the relief and treatment of medical conditions, most importantly for treating pain.
GW Pharmaceutical's research has lead to their using an approx 1:1 ratio THC:CBD medical formulation called Sativex, which has been approved in several countries for the treatment of many types of pain.
Breeders and collectors looking for cannabis strains with good CBD content will be interested in:
1. Pure Heirloom Hashish and Charas Cultivars
For example strains from Afghanistan, Pakistan, Lebanon, Greece, Turkey, Morocco and the Western Himalaya of India...
Often there are three chemotypes which can be found in hashish and charas plant genepools: pure THC plants, pure CBD plants and mixed THC/CBD plants
The Real Seed Company has several strains which are worth investigating for CBD:
Mazar-i-Sharif - Cannabis indica var. afghanica
Shiberghan - Cannabis indica var. afghanica
Lebanese - Cannabis indica var. ?
Malana - Cannabis indica var. indica
Parvati - Cannabis indica var. indica
"Pahari Farmhouse" (Kumaoni) - Cannabis indica var. indica
In addition to the cultivated Himalayan charas genepool are the feral jungli indicas - these are likely to have very good % of CBD and are available in the Jungli Three Pack which includes three jungli lines from the Himalayan regions of Kullu, Kumaon and Nepal
2. Chinese indicas - aka Cannabis indica var. chinensis are a second cultivar type worth investigating --- these typically average a 2.5:1 THC:CBD ratio...
The Real Seed Company Golden Triangle Akha is a Cannabis indica var. chinensis cultivated by the Akha for ganja - it has good trichome density, quite dense buds and good smoking flavour. ACE Seeds also offer a Cannabis indica var. chinensis from Yunnan, China. The RSC chinensis line originates on the Lao side of the Golden Triangle, opposite the Yunnanese homeland of the Akha highlanders.
Some breeders might be interested in a third option:
3. Fibre Hemp Landraces - Turkish hemp can have good CBD %, but is hemp, not ever bred for smoking; wild Austrian "ruderalis" has shown a good myrcene content. Myrcene is a terpenoid with powerful pain relief effects.
Western modern strains seldom contain significant levels of CBD. There are no doubt exceptions to this. Memory says that G13 may contain some CBD. Other afghanica strains like Deep Chunk, Pine Tar Kush and any pure Hindu Kush you can find may be worth a look.
Myrcene, in particular Beta-myrcene, is a terpenoid which is also very important for pain relief. Beta-myrcene has a potent analgesic (pain-relieving) action, and seems to work by an opioid mechanism. White Widow is a modern cultivar which has been shown to have very high levels of myrcene. Ortega indica is another modern line likely to have high levels of medicinal terpenoids.
With the above info, basic breeding skills involving keeping mother and father plants, cloning and crossing, you should have enough info to begin creating a very nice med strain of your own for the purposes of pain relief --- with good CBD and myrcene levels, and a THC level to suit your tastes.
Namkha
[edit: I am using modern Cannabis taxonomy where all drug types are indica e.g. Thai would be an NLD (Narrow Leaflet Dominant) Cannabis indica var. indica]
