Abstract:

The ornamental traits of 50 kinds of garden chrysanthemum were comprehensively evaluated and screened to provide data support for the screening of excellent varieties in cool areas such as Ningxia. The hierarchical analysis method was used to establish a hierarchical structure model, and the judgment matrix was constructed to observe and count the flower color, flower diameter, flower number, group flowering period, plant height, plant height, branch number, stem thickness, leaf color, disease, leaf length, leaf width and crown amplitude of 50 species of garden chrysanthemum. According to the total ranking of the hierarchy, the comprehensive scores of the main trait differences, weight value and ornamental traits were calculated. The number of flowers, crown amplitude, group flowering period and number of branches (ranking value> 0.1) were the four main factors restricting the ornamental value of chrysanthemum. 20% of the varieties with excellent ornamental value were selected, among which ‘Jiangyue’ was the best; 56% of the varieties were good, with ‘Deep Yellow Night Cat’ being the best; the general varieties accounted for 24%, with ‘Ninghong’ being the best.

Key words: chrysanthemum, hierarchical analysis, hierarchical structure model, growth period, flowering period, ornamental value, comprehensive evaluation, excellent seed selection