Economic Botany: Applied Plant Biology
Petefish, Mike , Wenger, Jonathan P , Weiblen, George D .
Inheritance of cannabinoid phenotype in a segregating population of Cannabis sativa.
We examined the inheritance of cannabinoid phenotype in a segregating population of Cannabis sativa by crossing inbred marijuana and hemp cultivars differing in the relative abundance of tetrahydrocannabinol (THC) and cannabidiol (CBD). The marijuana cultivar had a log THC/CBD ratio >1.0, the hemp cultivar had a ratio < -1.0, whereas the F1 population had an intermediate ratio of -0.99-0.99. We selfed a single F1 plant to produce an F2 population. Cannabinoid content in 198 F2 plants segregated in an approximately 1:2:1 frequency (54 drug: 104 intermediate: 40 hemp) as expected under a simple Mendelian model of inheritance (G-test of independence, p=0.260). These results support the hypothesis that the ratio of major cannabinoids is controlled by a relatively simple genetic switch. We further explore the inheritance of other economically-important quantitative traits including stems (for fiber production), leaves (for cellulosic ethanol), and inflorescences (for oil-seed production).
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1 - University of Minnesota, College of Biological Sciences, 250 Biological Sciences Center, 1445 Gortner Avenue, Saint Paul, MN, 55108, USA
2 - University of Minnesota, Department of Plant Biology, 250 Biological Sciences Center, 1445 Gortner Avenue, Saint Paul, MN, 55108, USA
3 - University of Minnesota, Department of Plant Biology, 250 Biological Sciences, 1445 Gortner Avenue, St. Paul, Minnesota, 55108, USA
Presentation Type: Poster:Posters for Topics
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM