Application of Grey Correlation Analysis in Comprehensive Evaluation of Cut Sunflowers
[Objective]In order to provide reference for the introduction of new varieties of cut sunflower and the innovation and utilization of germplasm resources,the cut sunflower varieties with high ornamental value and excellent performance suitable for popularization and planting in Shenyang area were screened out.[Method]With 15 introduced cut sunflowers as test materials,the cultivation experiment was carried out in Shenyang area,and the field performance was observed and recorded.The grey correlation analysis method was used to comprehensively evaluate the four indexes of plant height,ligulate flower length/disc diameter,florescence and petal shape.[Result]The comprehensive evaluation of cut sunflower varieties Pingsheng and Taiyangzhiyan was better,and the ornamental value was the best.[Conclusion]Sunflower varieties Pingsheng and Taiyangzhiyan have the characteristics of low plant height,oval petals and moderate proportion of flower discs.They have great production potential and are suitable for demonstration and promotion in this region.
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