Fig. 5. Wild-type and knuckles silique phenotypes at 16°C. (A) Wild-type and knu replae from dehiscent siliques grown at 16°C. (B) Features of a single 16°C-grown dehiscent knu silique. Left, one valve removed to expose bulging septum of un-knuckled side of the replum, abaxial (ab) side of valve visible. Right, both valves removed, with knuckled side of replum and inner (adaxial, ad) faces of spoon-like valves visible. Knuckle (kn) indicated by arrow. Note that seeds have been removed. Scale bars: 5 mm in A,B.