Genotype

Genotype (Greek genos "race, kind" + typos "form"), coined by Wilhelm Johannsen (1909), denotes the complete set of heritable genetic material (alleles) of an organism, as distinct from the phenotype it expresses. In cannabis, genotype is increasingly characterized by SNP arrays, microsatellites (SSRs), and whole-genome resequencing (van Bakel et al. 2011; Sawler et al. 2015; Grassa et al. 2021; Ren et al. 2021). Schwabe & McGlaughlin (2019) demonstrated that plants sold under identical strain names often have divergent genotypes, while dissimilarly named cultivars can be genetically identical. Breeder usage of "genotype" often colloquially refers to a specific seed line or selected mother plant retained for clonal propagation. Vergara et al. (2021) showed commercial Sativa/Indica labels fail to correlate with genome-wide genotype. → See also: Phenotype, Cultivar, Chemotype.