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Varieties with a similar appearance
Alaska
| Characters compared | Value |
| Maturity: | Very early to early |
| Pollen fertility: | Low |
| Tuber skin colour: | White to yellow |
| Primary tuber flesh colour: | White |
| Tuber shape: | Oval |
| Tuber eye depth: | Very shallow to shallow |
| Variety | Characters matched | Sources |
| Alaska | 6/6 | 2 |
| Primura | 5/6 | 7 |
| Avenir | 5/6 | 5 |
| Mariana | 5/6 | 5 |
| Climax | 5/6 | 4 |
| Dr McIntosh | 5/6 | 4 |
| Adelheid | 5/6 | 3 |
| Tertus | 5/6 | 3 |
| Sheriff | 5/6 | 2 |
| Agronomitchesky | 5/6 | 2 |
| Monalisa | 4/6 | 7 |
| Kennebec | 4/6 | 6 |
| Jaerla | 4/6 | 6 |
| Civa | 4/6 | 5 |
| Premiere | 4/6 | 5 |
| Apollo (1970) | 4/6 | 5 |
| Ilona | 4/6 | 4 |
| Blanka | 4/6 | 4 |
| Pito | 4/6 | 4 |
| Saskia | 4/6 | 4 |
| Astarte | 4/6 | 4 |
| Berber | 4/6 | 4 |
| Shepody | 4/6 | 4 |
| Frisia | 4/6 | 4 |
| Fresco | 4/6 | 3 |
| Ambra | 4/6 | 3 |
| Blanik | 4/6 | 3 |
| Manna | 4/6 | 3 |
| Di Vernon | 4/6 | 3 |
| Humalda | 4/6 | 3 |
| Ulster Chieftain | 4/6 | 3 |
| Dunbar Rover | 4/6 | 3 |
| Iskra | 4/6 | 3 |
| Morene | 4/6 | 3 |
| Senaria | 4/6 | 3 |
| Europa | 4/6 | 3 |
| Hera | 4/6 | 3 |
| Accord | 4/6 | 2 |
| Vesta | 4/6 | 2 |
| Lizen | 4/6 | 2 |
| Aniel | 4/6 | 2 |
| Doon Star | 4/6 | 2 |
| Fundy | 4/6 | 2 |
| Arran Bard | 4/6 | 2 |
| Belorussky Krachmalisty | 4/6 | 2 |
| Volzhanin | 4/6 | 2 |
| Tresor | 4/6 | 2 |
| Hunter | 4/6 | 2 |
| Varmas | 4/6 | 2 |
| Home Guard | 4/6 | 2 |
| Aksaiskii | 4/6 | 1 |
| Safrane | 4/6 | 1 |
| Oasis | 4/6 | 1 |
| AT 18 1021 | 4/6 | 1 |
| Ballydoon | 4/6 | 1 |
| Manon | 4/6 | 1 |
| 2149C 18 | 4/6 | 1 |
| Odessa | 4/6 | 1 |
| 2151B 31 | 4/6 | 1 |
| Early Gem | 4/6 | 1 |
| Iwa | 4/6 | 1 |
