Diversity analysis of flowers phenotypic traits of Camellia reticulata cultivars
[Objective]Phenotypic variation(including directions and degrees)of 12 floral traits from 38 cultivars of Camellia reticulata were explored by comparing their distributions and deviations in three different dimensions:floral organ number,size,and the shape.[Method]Analysis of variance,correlation analysis,principal component analysis,comprehensive analysis,cluster analysis,as well as box-plot and application of frequency distribution functions were conducted on the 12 floral phenotypic traits of C.reticulata.[Result]There were rich variations in 12 floral traits of different cultivars,with a coefficient of variation(CV)ranging from 13.00%to 67.00%,an average CV of 27.24%;The weight calculation using the CV showed that the variability of pistil number(20.485%)had the greatest impact,while the variability of petal length/petal width(3.99%)had the smallest impact;Correlation analysis showed that there was a highly significant correlation among all 12 traits,with the greatest correlation between flower diameter and petal width(r=0.822).Principal component analysis showed that the feature values extracted from the first four principal components were all greater than 1.00,with a cumulative contribution rate of 82.129%;Cluster analysis divided 38 cultivars into three groups.The comprehensive evaluation indicated that'Dali Cha'received the highest comprehensive score(F=3.230),making it the best among the 38 cultivars of C.reticulata in terms of comprehensive characteristics.The three groups of 38 cultivars were also analyzed by using box plots and frequency distribution functions.There were only nine traits showed significant differences.Group I of floral traits all showed upward distributed box bodies in box plot analysis and Group III was downward distributed.However,all the 12 traits in three groups exhibited significant differences in frequency distribution functions.The variation degrees were quantitatively characterized by numbering traits＞sizing traits＞shaping traits.[Conclusion]The 12 floral phenotypic traits of C.reticulata exhibit rich variability,primarily evolving towards gradual petalization of the stamen and pistil groups.The research findings establish the trend of floral phenotype evolution in C.reticulata,providing a theoretical basis for targeted breeding of C.reticulata in the future.
万方数据
维普
