It is of great importance to carry out comprehensive and multi-environmental Value for cultivation and use (VCU) experiments of the new candidate varieties, to register the ones with superior characteristics, to produce seeds and to deliver them to farmers. In addition, it is necessary to determine whether a candidate variety has the characteristics of a variety by performing distinctness, uniformity and stability (DUS) tests. The registration system in field crops is based on two basic principles: DUS tests and VCU experiments. In Türkiye, the Seed Law (No. 5553) was published in 2006 and many new practices have been implemented with the legislation enacted based on this law. The Regulation on the Registration of Plant Varieties was also issued in 2008, but revisions were made in the following years. Finally, the Regulation on the Registration of Plant Varieties was amended with the same name in 2024 and put into force as a new regulation. In this new regulation, the most important change made in the registration of field crops is the separation of plant species to be registered by conducting VCU. Among the cool season cereals, VCU experiments will be conducted in barley, bread and durum wheat, while registration procedures based only on DUS tests will be carried out in other cool season cereals. Varietal trueness tests have been introduced for the registration in Türkiye of varieties that have been registered in a member country of the International Union for the Protection of New Varieties of Plants and for which DUS tests have been conducted according to UPOV rules. Many new rules have been included in the latest regulation to facilitate the work and procedures of applicants and the Variety Registration and Seed Certification Center (VRSCC). VCU experiments in cool season cereals are carried out regionally and the number of locations should be increased especially in Central Anatolia, which is the most important region of Türkiye in wheat and barley agricultural production. In addition, the number of experiment locations where quality analyzes are carried out should be increased and disease tests should be carried out under artificial epidemic conditions. Plant varieties have a strategic importance in the agricultural production of countries and it should be ensured that the VRSCC, which tests the performance and characteristics of new candidate varieties, has a strong structure.