Fig. 4. Expression of PARF6::GUS and
PARF8::GUS fusions in flowers. (A-D,H)
PARF6::GUS flowers. (E-G,I) PARF8::GUS
flowers. (A) Stage 11. (B,C) Stage 12. (D) Stage 13. (E) Stage 11. (F) Stage
12. (G) Stage 13. (H,I) Higher magnification of images in A and E. Arrows
indicate tapetum staining.