六出花属DUS测试性状筛选与评价

以39份六出花品种为试材,对51个候选性状进行观测,比对不同测量方式对花相关数量性状的影响,并同时研究了同品种中外花被片与侧外花被片长度的相关性。结果表明:"花序:花序梗长度"和"花:花梗长度"不满足DUS测试性状要求,最后筛选出43个性状作为DUS测试性状。12个数量性状可分别划分为3~7级;不同观测方式对花相关数量性状具有影响,推荐DUS测试时采用随机观测方式;不同批次的同一品种观测结果部分性状上存在差异;多数品种的中外花被片长度与侧外花被片长度之间呈线性正相关;形态性状的聚类分析结果支持将"花:主色"作为分组性状。

Selection and assessment for Alstroemeria DUS testing traits

The 51 traits were evaluated and 12 quantitative characteristics were classified with 39 Alstroemeria L.varieties.The measure method of 6 quantitative traits of inflorescence were studied.The relationship between the length of outer middle tepal and outer lateral tepal was also studied.The results showed that" Inflorescence:length of peduncle" and" Inflorescence:length of pedicle" were not suitable for DUS testing,43 characteristics were selected as DUS testing characteristics.12 quantitative traits can be classified into 3-7 continuous grades respectively.The measure method had obvious effect on the quantitative characteristics of inflorescence,random observation was recommended in DUS testing.Some characteristics of the same variety were different between two batches.In most Alstroemeria L.varieties,there were linear correlation between length of outer middle tepal and outer lateral tepal.Clustering analysis based on the morphological characters agreed with that "flower:the main color" could be used as grouping characteristic.