Research Article
A Comparative Analysis of the Mechanical Role of Leaf Sheaths of Poaceae, Juncaceae, and Cyperaceae
Table 2
Mean of flexural rigidity of entire internodes with and without leaf sheaths. Standard deviation is bracketed and expressed as a percentage.
| | A. elatius | B. erectus | P. araratica | L. nivea | C. arctata |
| | Flexural rigidity of entire internodes without leaf sheaths (Nm2) | Internode | | | | | | 1 (base) | 1.92 (19.2) | 1.31 (14.5) | 0.05 | 1.43 | 0.08 (56.0) | 2 | 1.70 (25.9) | 2.33 (67.5) | 0.05 (10.3) | 1.20 (29.4) | 0.08 (39.7) | 3 | 1.26 (34.1) | 1.16 (61.2) | 0.05 (11.0) | 0.78 (37.1) | 0.03 (60.0) | 4 | 0.92 (43.7) | 0.62 (75.9) | 0.03 (11.8) | 0.50 (39.3) | 0.01 (52.0) | 5 | 0.49 (42.9) | 0.28 (34.9) | 0.01 (67.5) | 0.28 (50.0) | | 6 | | | | 0.17 (50.1) | | 7 | | | | 0.07 (45.3) | |
| | Flexural rigidity of entire internodes with leaf sheaths (Nm2) | Internode | | | | | | 1 (base) | — | — | 0.06 | 1.35 | 0.09 (32.6) | 2 | — | — | 0.06 (15.3) | 1.01 (30.8) | 0.08 (41.1) | 3 | 1.27 (42.2) | 1.28 (41.2) | 0.06 (5.5) | 0.77 (32.2) | 0.06 (32.3) | 4 | 1.01 (43.3) | 0.79 (32.2) | 0.04 (6.5) | 0.51 (38.7) | 0.03 (45.8) | 5 | 0.65 (41.2) | 0.42 (8.1) | 0.02 (18.2) | 0.34 (45.2) | | 6 | | | | 0.20 (45.8) | | 7 | | | | 0.10 (44.5) | |
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