Table 1.

Parameters and values used for simulating different root architectures.

Parameter	Values	References
Number of zero-order axes	1, 4	Kutschera et al., 2009
Number of laterals per branching zone	20, 40, 60	Werner et al., 2001; Pasternak et al., 2005; Hund et al., 2009
Highest (4th order) lateral branching	Yes/no	Kutschera et al., 2009
Branching angle (zero-to-first order axes)	65°, 90°	Osmont et al., 2007; Nagel et al., 2009
Inter-branch distance at zero-order root	0.2, 0.5, 2.0 cm	Fitter, 1987; Arredondo and Johnson, 2011
Inter-branch distance at first-order root	0.1, 0.2 cm	–
Tropism type	Gravitropism, Exotropism	Rosen et al., 1999; Pagès et al., 2004