Tendril Climbers

All dicotyledonous tendril climbers tested show a marked drop in Estr from young to older stages with final values of Estr in the range of below 1000 MNm-2 (Table 2.1; Figure 2.3 and Figure 2.4). The species of Bauhinia (monkey ladder) shows an extreme drop in mechanical properties from young stages of over 8000 MNm-2 (Table 2.1). This varies from one of the highest tested of all categories (8480 MNm-2) to one of the lowest (350 MNm-2). The species shows a marked change in both material properties of the stem (Figure 2.3 and Figure 2.4) as well as a profound change in stem geometry leading to ribbonlike, highly flexible stems (Figure 2.1e). In contrast to the dicotyledonous twiners, the small monocotyledonous climber Smilax aspera, which generally grows on herbs, shrubs, and small trees, shows an increase in Estr from younger parts of the plant to older basal parts (Table 2.1).

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