Figure 1.

Scanning Electron Micrographs of Arabidopsis Ovules and Flowers.

(A) Wild-type ovules at anthesis.

(B) hll-1 ovules at anthesis exhibit reduced or absent integuments and show variable cellular collapse.

(C) Wild-type flower just before anthesis with carpel exposed.

(D) hll-1 flower at anthesis. The pistil is significantly smaller than shown in (C), despite the more advanced age of the flower.

(E) Ovules from an hll-1 plant complemented with a genomic fragment containing the HLL gene (pDS08) show wild-type morphology.

Bars in (A), (B), and (E) = 25 μm; bars in (C) and (D) = 250 μm.