Translations:Benutzer:Arian/Klett-Mini-Test/1196/en

Leaf metamorphosis. It maps spatially the dynamics of growth as it unfolds in time.

• The leaf metamorphosis from the basal leaves upward toward the blossom is shown for the example of radishes in Figure 18.
• The basal forms show, in the lower part pinnate, in the upper part rounded, little-articulated and finely toothed leaf blades. In the successive leaves the leaf blade reduces itself more and more to the upper portion. It then becomes strongly toothed and increasingly lanceolate-pointed. This polar leaf-shaping in the primary as against the successive leaves is most sharply expressed in light. It loses itself toward deep shade, in which the successive leaves retain the habit of the primary leaves for a longer time (less toothing, more rounded blade).
• The same difference appears in comparing manure compost dressing to NPK. The former goes in step with the influence of light; in the latter, leaf transformation is similarly inhibited as in the plants growing under shade.