In PGR: An early, cultivated form of a crop species, evolved from a wild population.

A locally-adapted strain of a species bred through traditional methods of directed selection. Also called farmer varieties.

a genetically diverse, cultivated plant population

primitive or antique variety usually associated with traditional agriculture, often highly adapted to local conditions.

A crop cultivar that has been genetically improved and maintained by traditional methods of selection rather than modern breeding practices.

A farmer-developed variety of a crop plant that is heterogeneous, adapted to local environmental conditions, and has its own local name.

Landrace refers to a race of animals or plants ideally suited for the land (environment) in which they live (or originated) and, in some cases, work; they often develop naturally with minimal assistance or guidance from humans (or from humans using traditional rather than modern breeding methods), hence are usually older, less modern races.