Comprehensive Evaluation of Introduced Rosa chinensis in Linyi City
Using flower diameter,resistance,crown width,flowering date,plant height and growth rate as evaluation indexes,7 Rosa chinensis varieties introduced from Nanyang were evaluated comprehensively through equal weight and weighted grey correlation analysis.The results showed that the four varieties with high ornamental value were Harmony,Little fairy,RosaPink Margo Koster and Little girl,and the correlation degree with the ideal species was greater than 0.9,and the comprehensive characteristics were good,which was suitable for mass use in Linyi area.The second is the Golden sun,the correlation degree with the ideal species is above 0.7,can be promoted according to the requirements;Ruby and Purple ages have a correlation of less than 0.7 with ideal spe-cies and can only be used as appropriate embellishment.
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