Figure 7.

Inflorescence and Flower Development in Long-Day-Grown arp6-1 Plants.

(A) Inflorescences of wild-type and arp6-1 plants.

(B) Cross sections of wild-type and arp6-1 inflorescence stems taken just below the first internode. Sections were stained for lignin with phloroglucinol.

(C) Top view of wild-type and arp6-1 flowers.

(D) Side view of wild-type and arp6-1 flowers.

(E) Side view of wild-type and arp6-1 flowers without sepals and petals.

(F) Fully expanded wild-type and arp6-1 siliques.

(G) Representative siliques of wild-type and arp6-1 plants opened to reveal developing seeds and unfertilized ovules in the arp6-1 fruit.

(H) Wild-type and arp6-1 stamens. Insets show pollen grains of each genotype.

(I) and (J) Scanning electron micrographs of wild-type (I) and arp6-1 (J) inflorescence meristems. Meristems are denoted by arrows.

(K) and (L) Toluidine blue–stained sections of wild-type (K) and arp6-1 (L) inflorescence stems shown at 40× magnification.