基于灰色关联度和Topsis法对桑树产量及相关性状的分析评价

Analysis and Evaluation of Mulberry Leaf Yield and Related Characters Based on Grey Correlation Analysis and TOPSIS Method

采用DPS17.10灰色关联度法和Topsis法,探究不同桑品种间产量及相关性状的关联度,并评价桑品种的优劣。结果表明:桑树产量与相关性状之间的灰色关联度由高到低排序,春米条产量>秋米条产量>秋单叶重>春生长芽率>春发芽率>秋株条长>春单叶重>秋株条数>秋黄落叶率;Topsis法综合评判的结果,鲁插2号>鲁插3号>陕桑406>陕桑9312>鸡桑变>蒲选1号>湖桑32号>陕桑8826。对桑品种的优劣评价起着主导作用的是品种单位面积产量;春、秋米条产叶量对品种单位面积产量影响最大,为优势性状,其次为秋单叶重,这3个指标可作为品种选育时的主导性状。

To explore the correlation degree of yield and related characters among different mulberry varieties, and evaluate the advantages and disadvantages of 8 mulberry varieties, DPS17.10 grey correlation analysis and TOPSIS method were used for comprehensive analysis. Results showed the grey correlation degree between mulberry yield and related characters from high to low was: leaf yield per metre in spring > leaf yield per metre in autumn>single leaf weight in autumn>sprouting rate in spring>germination rate in spring>shoot length in autumn>single leaf weight in spring>shoot number in autumn>yellow leaf rate in autumn.The comprehensive evaluation result of TOPSIS method was as follows: LuCha No. 2>LuCha No. 3>Shaansang 406>Shaansang 9312>Jisang Bian>Puxuan No. 1>Husang No. 32>Shaansang 8826. The variety yield per unit area plays a dominant role in the evaluation of mulberry varieties. The leaf yield in spring and autumn shoot per metre had the greatest effect on the yield of different varieties, which was the dominant character, followed by autumn single leaf weight, which could be used as the dominant character in variety breeding.