| Color code and Abbreviations |
Queens from one strain, but mated by drones from another strain . Their population and daughters (and drones of them) are F1 crossed. |
| Queen and Drones have the same ancestors: combination to increase or stabilize some characteristics |
| Queen and Drones, Aunt-Nephews, are F1 this is a real Mendelian F1 cross. |
| Queen and/or Drones have unknown exact origin : that makes unable to find their real status. |
| Breeders |
| .. : | Not known! () |
| KB : | Keld Brandstrup (DK) |
| MKK : | Pierre de Koning (NL) |
| MKN : | Foundation Buckfast Marken (NL) |
| MKW : | Ton Woud (NL) |
| TR : | Thomas Rueppel (DE) |
|
| Races — Do use them |
| A: | anatolica |
| B: | buckfast |
| S: | sahariensis |
|
| Importation mode |
| imq : | Laying queen imported |
| Mating Places, etc |
| inmk : | Instrumental insemination (NL) |
| mrk : | Marken peninsula (NL) |
| nex : | Nekselø island (DK) |
| tun : | Tunø island (DK) |
|