木瓜属植物新品种特异性、一致性和稳定性(DUS)测试指南的研制

摘要

The characteristics variation pattern, stability and their relevance of varieties in the genus Chaenomeles were analyzed based on UPOV and China's assessment system. The selection principles of example varieties and testing characteristics were discussed. Twelve example' varieties and thirty-one testing characteristics (10 qualitative, 6 quantitative, and of pseudo-qualitative) were adopted for DUS test. For each characteristic a code was given to express the state. Twenty-four characteristics were of asterisked, such as plant type, flower color, flower diameter, polyphyll state, fruit shape, and peel crimpled state, and seven ones were of non-asterisked. The assessment standard for Distinctness, Uniformity, and Stability was put forward.%遵循国际植物新品种保护联盟及我国的相关规定,分析木瓜属植物品种的性状变异规律及其稳定性和相关性(DUS),探讨标准品种和测试性状的选择.筛选31个测试性状和12个标准品种用于新品种DUS测试；其中,质量性状10个、数量性状6个、假质量性状15个,“*”号性状24个、非“*”号性状7个,每个性状的表达状态给以相应的代码.“*”号性状主要有株型、花色、花径、重瓣性、果实形状及果皮皱缩状况等.提出木瓜属植物新品种的特异性、一致性、稳定性判别标准.