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应用灰色关联度分析法综合评价江苏省甘薯新品系联合鉴定的 7个材料的 1 0个性状。结果表明 :该方法可行 ,其评价结果与品种表现相吻合 ,对参试品种 (系 )能作出较全面、准确、客观的综合评价。其中“徐 2 2”品种关联度最高 ,是一个高干高产品系 ,破格提升参加省区域试验 ,从而提高甘薯品种的选择效率 ,缩短品种育成年限。同时对分辨系数的取值进行了初步探讨 ,分辨系数的具体取值还需在今后的育种实践中不断摸索。
The gray correlation analysis method was used to evaluate the 10 traits of 7 materials identified by the new sweet potato strains in Jiangsu Province. The results show that this method is feasible, the evaluation results are consistent with the performance of varieties, and comprehensive, accurate and objective comprehensive evaluation of the tested varieties (lines) can be made. Among them, “Xu 2 2” had the highest degree of correlation, which was a high-stem-high product line, which was upgraded to participate in the provincial regional test to improve the selection efficiency of sweet potato varieties and shorten the breeding limit of varieties. At the same time, the value of resolution coefficient is discussed preliminarily. The specific value of resolution coefficient needs to be further explored in future breeding practice.