Table 4.
Combinations of control genes recommended for different sample subsets.
| Sample subsets | Recommended Control genes | Mean stability values | ||
| M | CV | Vn/n+1* | ||
| R | TIP41/SAND (CAC) | 0.299 (0.422) | 0.210 (0.277) | 0.149 |
| L | Expressed/TIP41 (CAC) | 0.399 (0.430) | 0.246 (0.262) | 0.135 |
| I | SAND/CAC (DNAJ) | 0.374 (0.416) | 0.220 (0.236) | 0.133 |
| F | CAC/SAND (Expressed) | 0.362 (0.306) | 0.230 (0.256) | 0.075 |
| R+L | TIP41/Expressed/CAC | 0.580 | 0.294 | 0.140 |
| L+I | CAC/Expressed/TIP41 | 0.519 | 0.317 | 0.113 |
| I+F | CAC/SAND/RPL8 | 0.507 | 0.307 | 0.123 |
| L+I+F | CAC/TIP41/Expressed | 0.481 | 0.343 | 0.109 |
For each sample subset, optimal control genes are displayed as arranged in the corresponding consensus ranking (see additional file 1). In brackets are shown optional control genes for individual organs and the resulting stability values (see comments in text). * Pairwise variation of NFn/NFn+1 ratios, n being the number of recommended control genes. R: roots; L: leaves and cotyledons; I: inflorescences; F: fruits.