Fig. 1.

Disease susceptibility of durum wheat and rice in intraspecific mixtures. (A) Plants of the wheat genotype Cultur (CUL) and (B) the temperate japonica rice genotype Kitaake (KIT) were grown with neighbours of the same genotype (grey shading, ‘pure’ condition) or of a conspecific genotype (white shading, mixture), and the plants were inoculated with Puccinia triticina (leaf rust disease) for wheat and Magnaporthe oryzae (blast disease) for rice (see Methods). For genotype abbreviations see Supplementary Tables S2 and S3. Susceptibility was measured as the number of lesions cm^–2 of leaf area on the CUL and rice KIT focal plants (data are square-root transformed). The violin plots represent at least n=42 plants for rice and n=36 plants for wheat. The red dots represent the least-square means as determined using a linear model. For wheat, each combination was performed eight times in three separate experiments, and for rice, each combination was performed 12 times in three separate experiments. Significant differences compared with the ‘pure’ control were determined using ANOVA of the linear model followed by Dunnett’s tests: *P<0.05; **P<0.01.