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Fig. 2. Ectopic floral organs arise from the placentae. (A-E) Longitudinal sections
of floral buds, whereas F and G are whole-mounts where images were captured
using Nomarski optics. Stages of floral development are indicated in the
bottom-left of each panel. (A) Early gynoecium initiation in a wild-type Ws
flower bud. (B) Wild-type Ws gynoecium with ovule primordia. (C) knu
gynoecium showing ectopic primordium developing from placental tissue. (D)
Developing ectopic organs inside the basal one-third of a primary knu
pistil. (E) Ectopic primordium interspersed with developing ovules inside a
primary knu pistil. (F) Ectopic floral primordium developing inside
primary knu pistil. (G) Ectopic carpel and stamen primordia
developing inside primary knu pistil. Scale bars: 25 µm in A,E; 50
µm in B-D,F,G. a, anther; ecp, ectopic carpel primordium; ep, ectopic
primordium; es, ectopic stamen; fp, floral primordium; gy, gynoecium; op,
ovule primordium; se, sepal; st, stamen.
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