Abstract:

Distinctness，Uniformity and Stability(DUS for short)testing is the technical base of Plant Variety Protection(PVP)and the scientific basis for the approval of Plant Breeder's Rights(PBR)．DUS Test Guidelines are not only the technical manuals for the DUS testing authorities to conduct the testing，but also the technical standards for the competent authorities to examine the DUS of new varieties of plants．Safflower is a traditional Chinese medicinal plant as well as a new oil and industrial crop. In this paper,the subject，selection and adoption of characteristics，states of expression and selection of example varieties，assessment of DUS of the UPOV Test Guidelines for Safflower were elucidated in detail．The preparation of DUS Test Guidelines for Safflower will have important significance both for promoting the development of PVP and increasing the status of international PVP fields for China．