Fig. 1

Mean light reflectance of 19 wavelengths (nm) in hard and soft seeds. a Acacia seyal, b Galega orientulis, c Glycyrrhiza glabra, d Medicago sativa, e Melilotus officinalis, and f Thermopsis lanceolata. * and ** indicate significant difference between hard and soft seeds at 0.05 and 0.01 levels, respectively. NS indicate no significant difference between two species. Vertical bars represent standard deviations