Fig. 4.

(A) The relationship between mean DNA C-value (±standard error) and altitude in populations of Dactylis glomerata at three sites in southern Europe, Spain, France and Italy. (B) The relationships between plants from low altitude (light shading) and high altitude (dark shading) populations of Dactylis glomerata based on AFLP variation using two different methods of analysis, neighbour-joining and UPGMA. [Reproduced, with permission, from Reeves G, Francis D, Davies MS, Rogers HJ, Hodkinson T. 1998. Genome size is negatively correlated with altitude in natural populations of Dactylis glomerata. Annals of Botany 82 (Suppl. A): 99–105.]