Fig. 1

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