Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12870-019-1672-7/MediaObjects/12870_2019_1672_Fig1_HTML.png)
Paraffin section observed differentiation procession of pistil development between Prunus mume cultivars QJN2 and DY. a and f are the pre-differentiation stage of pistil development. b and g are the early differentiation stage of pistil development. c-d and h-i are the differentiation stage of pistil development. e and j are the late differentiation stage of pistil development. Scale bars are shown in the figure