Fig. 2

Frequency distributions of floral phenotypic traits of wild and cultivated crabapples. The areas filled with light gray indicate the probabilities of wild crabapples deviating from the cultivated, while dark gray represents the probabilities of cultivated crabapples deviating from the wild. Variation directions from wild to cultivated crabapples were presented in purple (right deviations) and blue (left deviations) arrows. The right deviations mean that compared with wild crabapples, floral traits of cultivated exhibited increasing trends with larger values, whereas the left deviations mean the opposite