Evaluation on Ornamental Value of Lagerstroemia indica Varieties in Shandong Province by Grey- relational Grade
The ornamental value of Lagerstroemia indica varieties known in Shandong Province were evaluated based on grey relational grade ( GRG). The results showed that the varieties belonging to Sajin Croup and Rubra Croup with high grey relational grades had high ornamental value, such as Huanfenliuyun, Furong-mian and Erbanianhua, while Aishengzhizhifen, Xiaohuafen and Hongxia with lower relational grades. The varieties with big inflorescence and flower diameters, bright colors were of high ornamental value.