Agriculture Ministry Publishes First EDV Catalogue Covering 10 Crops, System Takes Effect

The Ministry of Agriculture and Rural Affairs has recently published the first implementation catalogue for the essentially derived variety system for agricultural plants, together with supporting documents including determination guidelines and technical standards. Ten crops, including rice, wheat and corn, are included in the first batch, marking the formal implementation of the essentially derived variety (EDV) system in China. The system is designed to align the interests of original innovation and cosmetic improvement, providing institutional safeguards for original breeding innovation.

An essentially derived variety is an improved variety that makes only partial trait modifications to an originally authorised variety without achieving a genuine change in the core genotype. Under the core rules of the EDV system, a derived variety must obtain permission from the original variety rights holder before entering commercial promotion in the market, with the two parties agreeing on the revenue-sharing ratio in accordance with the law. This institutional design draws the boundary of breeding innovation at the legal level and establishes a benefit-sharing mechanism. Developing a stable, mature original crop variety typically requires 8 to 10 years of sustained investment. Before the system took effect, the domestic seed industry suffered from a bias towards cosmetic improvement over original innovation: original research and development was costly and capital-intensive, while improvers profited from cosmetic modification, dampening enthusiasm for original innovation in the seed industry.

The International Union for the Protection of New Varieties of Plants (UPOV) established the EDV rules in 1991, and 90 countries have now implemented the system. The latest implementation adopts a 'catalogue first, phased expansion' approach, giving priority to rice and wheat, the two staple grain crops, as well as oil crops, vegetables and other categories essential to people's daily needs. Supporting documents including determination guidelines and technical standards have been published alongside the catalogue, providing the basis for determining and identifying derived varieties.