| Rootstock Name | Millardet et Grasset 420A |
|---|---|
| Names found in collections | 420A |
| Synonyms | Kobber 420A |
| DNA sample | 17 |
| Collection | 4 |
| Species or Pedigree | V. berlandieri X V. riparia |
| Reassignment of identity | |
| UCH2 | 162 |
| UCH2 | 146 |
| UCH11 | 246 |
| UCH11 | 242 |
| UCH12 | 166 |
| UCH12 | 149 |
| UCH19 | 212 |
| UCH19 | 198 |
| UCH29 | 288 |
| UCH29 | 207 |
| UCH35 | 177 |
| UCH35 | 153 |
| UCH40 | 300 |
| UCH40 | 273 |