桦木属植物新品种DUS测试指南的研制

Guideline for the Tests of DUS for New Varieties of Genus Betula

依据国际植物新品种保护联盟(UPOV)及我国关于植物新品种DUS测试指南的相关规定,制定了适合我国桦木属植物新品种DUS测试指南。结果表明,通过深入研究桦木属主要种、变种及品种的形态特征和生长特性,共筛选出30个测试性状(质量性状9个、数量性状9个、假性质量性状13个)和9个标准品种用于新品种DUS测试;对每个测试性状的表达状态进行准确描述和科学分级,共划分了106个表达状态或等级;提出了桦木属植物新品种特异性、一致性、稳定性的判别标准。

Based on the general introduction to examination of DUS for UPOV and the national standard of test guideline for DUS in China, the authors did comprehensive and painstaking research on morphology characteristics and growing characteristics of genus Betula, including main species, variants and cultivars. 9 example varieties and 30 testing characteristics were adopted for DUS test. In the testing characteris- tics, 9 qualitative, 9 quantitative, and 13 pseudo-qualitative were included. At the same time, the expression states of testing characteristics were scientifically described and hierarchical for the table of characteristics; the 106 expression states of characteristics were given. The assessment standard for distinctness, uniformity, and stability was put forward.