Figure 4.

Concentration of Radioactivity in 1-mm Sections Excised along the Axis of Plant Stolons.

Stolons from nontuberizing plants (filled circles), small swelling stolons (2 to 5 mm diameter; filled triangles), or large swelling stolons (6 to 10 mm diameter; filled squares) are shown 4 hr after labeling of foliage with ¹⁴CO_2. Values are given as average values ± sd of stolon populations of between eight and 10 individually labeled plants. All data points for small and large swelling stolons were significantly different (P > 0.01) from equivalent nonswelling stolon sections. FW, fresh weight.