Fig. 1

Map showing the sampled groves (c.f. Table 1) and the ratio between trees of the MLL1/MLL7 and MLL1/MLL1 scion/sucker combinations (GG1:GG2) at each site; the different colours illustrate the ratio between the two groups, ranging from yellow (dominance of GG1 trees) to brown (dominance of GG2 trees)