Figure 2. Effect of the isogenization of root-ABA1 on the root architecture of Os420 and IABO78, the two parental lines that were crossed to obtain the mapping population that allowed for the identification of root-ABA1. The (+/+) and (–/–) indicate the root-ABA1 alleles increasing and decreasing root mass, respectively. Scale bar = 5 cm. Figure reproduced, with permission, from Giuliani et al. (2005b).