Multivariate Analysis of Lycoris Hybrid Traits

Based on the materials in Table 1, 5 vegetative characters (leaf length, leaf width, bulb diameter, bulb weight, and leaf twist angle) and 5 propagule characters (tepal length, floral tube length, filament length, symmetry degree of flower, and undulate degree of tepal) of the species were used as units (artificial hybridization of Lycoris × jinzheniae is listed separately). SPSS ver. 19.0 was used to standardize and extract the principal components and test the cumulative contribution rate of the first two principal components. Then, the devtools and ggbiplot software packages of R v3.6.0 were used. Principal component analysis was performed on all traits, vegetative traits, and propagule traits [37 (link)].
Three vegetative characters (leaf length, leaf width, and bulb diameter) and three propagule characters (tepal length, floral tube length, and filament length) were selected, and SPSS ver. 19.0 was used to make boxplots to compare morphological differences and test for significance [10 (link)].