Encyclopedia AllABCDEFGHIJKLMNOPQRSTUVWXYZ G Generation (in plant genetics:) Plant population; progeny; offspring. ST: P generation >> F1 generation >> F2 generation Learn More → Genotype x Environment interaction Phenomenon that different environments result in different rankings of the best cultivar. For example, at… Learn More → Geographic contiguity constraint The minimum distance between two seed production plots to prevent genetic contamination. The contiguity distance… Learn More →