蕙兰艺草表型多样性研究OA北大核心CSTPCD

The Cymbidium faberi with variegated leaf is the most ornamental variation type,and the study on its phenotypic diversity can provide reference for the classification and breeding.Totally,795 plants of C.faberi with variegated leaf were collected as the research objects,and the diversity of 7 leaf traits was analyzed by morphological methods.The results showed that C.faberi with variegated leaf could be divid-ed into four categories:edge art,stripe art,spot art and crystal art.The spot art type had a maximum num-ber of 331,while crystal art and edge art were 84 and 47,respectively.The leaf color diversity was the high-est,the semi-upright leaf posture accounted for 75.22％of the total,and the striped leaf art accounted for 57.86％of the total.The diversity index of three qualitative characters of edge art was the lowest.The di-versity index of color of stripe art,position of crystal art position and leaf art of spot art was the highest.The variation coefficients of four quantitative characters of crystal art were the highest.Correlation analysis showed that leaf art was significantly and negatively correlated with leaf number and leaf width,and signif-icantly and positively correlated with leaf length-width ratio,leaf color and leaf position.Principal compo-nent analysis showed that the phenotypic diversity of C.faberi was mainly determined by leaf art,leaf col-or and leaf size.