In order to provide theoretical guidance for the breeding of broccoli in the alpine plateau region,in this study,the yield per plant and phenotypic quantitative traits of 14 new varieties of broccoli were analyzed by grey correlation analysis. The results showed the correlation degree between yield per plant and 11 phenotypic quantitative traits of brocco-li was as follows:Center column width>Center column height>Leaf width>Flower head vertical diameter>Expan-sion degree>Flower head transverse diameter>Plant height>Leaf length>Branch number>Outer leaf number>Growth period. It was concluded that the width and height of the central column had the greatest influence on the yield per plant,and the correlation degrees were 0.7954 and 0.7595,respectively. According to the weight data of each trait,the comprehensive evaluation model of broccoli was obtained:H=0.0808Z1+0.0904Z2+0.0923Z3+0.0835Z4+0.0888Z5+0.0954Z6+0.0840Z7+0.0936Z8+0.0916Z9+0.0975Z10+0.1021Z11. Four varieties were selected as Zhongqing 518,Zhongqing16,Zhongqing 118 and Zhongqing 193,which could be used as local test demonstration and promotion varieties. Therefore,in the process of hybrid breeding of broccoli,if the yield was breeding goal,the two traits of center column width and heigh could be paid attention,and comprehensively consider other traits for comprehensive screening.
维普
万方数据