Table 2 Median value of Young’s modulus E, critical surface tension σk, Poisson’s ratio v and the force to tear ft of maple leaves Acer platanoides L. and lime leaves Tilia cordata Mill. determined in consecutive seasons of the year; V - May (spring), VIII - August (summer), X - October (autumn).

From: The relationship between physiological and mechanical properties of Acer platanoides L. and Tilia cordata Mill. leaves and their seasonal senescence

Month

E (MPa)

σk (MPa)

v (−)

ft (N · mm−1)

Maple (Acer)

Lime (Tilia)

Maple

Lime

Maple

Lime

Maple

Lime

V

3.98a

1.03a

0.51a

0.37a

0.44a

0.53a

0.21a

0.14a

VIII

24.17b

15.82c

1.59c

1.02c

0.48b

0.52a

0.51b

0.37c

X

21.33b

10.62b

1.24b

0.68b

0.48b

0.50a

0.52b

0.25b

  1. a–cValues marked with different letters (in columns) indicate significant differences at p ≤ 0.05.
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