Fig. 4.

Expression patterns of B-class MADS-box genes of Sinofranchetia chinensis as revealed by in situ hybridization analyses: (A–C) SIchAP3-1; (D–F) SIchAP3-2; (G–I) SIchAP3-3; (J, K) SIchPI; (L) negative control with sense probe for SIchPI. (A) and (D) show a young inflorescence with multiple flowers, whereas all other panels show only one flower. Abbreviations: gp, gynoecial primordium; ap, androecial primordium; se, sepal; st, stamen; ca, carpel. Arrows indicate nectar leaves. Scale bars = 100 µm.