Fig. 4. Floral organ phenotypes in wild-type (A,E,I,J), w6 (B,F,K), w3 (C,G,L,M) and w (D,H,N). (A-D) Whole flowers. (E,I,J) Wild-type petal showing adaxial epidermis with papillar cells (E,J) and abaxial epidermis with flat cells and trichomes (E,I). (F-N) SEM and sections of wiry mutant petals showed partial (F,K,N) and complete (G,L,M) abaxialization of petals. (K) Trichomes (t) on adaxial (ad) petal epidermis in w6. SEMs of (L) abaxial and (M) adaxial petal epidermal cells in w3. (N) Abaxial patches (ab) were seen in adaxial petal epidermis in w flowers. Scale bars: (A-D) 0.5 cm, (E-N) 50 µm, (L,M) 25 µm.