Figure 5

Pairwise variation (V). Pairwise variation (V) of the selected reference genes in (a) apomictic and (b) sexual Boechera, as calculated from geNorm, from the most to least stable M values: (a) V2/3 - pairwise variation between the 2 most stable genes (RPS18 and Efα1) + the third most stable gene (Act2), V3/4 - addition of the fourth most stable gene (at1g09770.1), V4/5 - addition of the fifth most stable gene (Pex4); (b) V2/3 - RPS18, Act2 plus Efα1, V3/4 - plus Pex4, V4/5 - plus at1g09770.1.