Fig. 3From: A new allele for aluminium tolerance gene in barley (Hordeum vulgare L.)Comparison of haematoxylin staining of barley roots in hydroponic experiments following different treatments. Shown are root apices after 4 d in (a) control solution and (b) 4 μM AlCl3. Genotypes shown are Dayton (D), Gairdner (G) and CXHKSL (C). Darker staining indicated greater Al accumulation at the root apicesBack to article page