Table 2 Ultimate anti-fracture force and its regression equation with root diameter of two plants.

From: The profiles and tensile strength on straight roots of plants withstand transient tensile injured after self-repair

Plant species

Root diameter (mm)

Ultimate tensile strength (N)

Regression equation

Salix psammophila

1.35–4.17

28.79–149.00

Y = 18.51x1.495, R2 = 0.992

Hippophae rhamnoides

1.23–4.27

12.26–99.00

Y = 10.14x1.548, R2 = 0.970

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