Table 1 Ranking systems used in New Zealand and Germany for phenotypic assessment of apple floral clusters after inoculation with Erwinia amylovora
From: Mapping of fire blight resistance in Malus ×robusta 5 flowers following artificial inoculation
New Zealand | Germany | |||
|---|---|---|---|---|
Symptom description | Class | Harmonized | Class | Symptom description |
healthy | 0 | 0 | 0 | healthy |
1 | possible floral infection | |||
floral infection | 1 | 1 | 2 | clear floral infection |
flowers and peduncle infected | 2 | 2 | 3 | flowers and peduncle infected |
flowers and bourse infected | 3 | 3 | 4 | flowers and bourse leaves infected |
5 | flowers and bourse infected | |||
floral cluster, bourse and bourse shoot infected | 4 | 4 | 6 | floral cluster, bourse and possibly shoot infected |
necrosis spread < 5 cm | 5 | 5 | 7 | necrosis spread < 5 cm |
necrosis spread > 5 cm | 6 | 6 | 8 | necrosis spread > 5 cm |