| Code | Definition | Number of Accessions |
| 1 | very low not limited, vast attackedpatches or totally attacked leaf blades-strong fungus fructification-pronounced and dense mycelium-very early leaf drop | 6 |
| 3 | low vast, not limited attacked patches-very strong fungus fructification-numerous mycelia -leaf drop not as early as with note 1 | 20 |
| 5 | medium limited attacked patches 1-2 cm in diameter-more or less severe fungus fructification-irregular formation of mycelia | 98 |
| 7 | high less necrotic attacked patches-less fructification-few mycelia | 70 |
| 9 | very high punctueted necroses or no symptoms, neither fructification nor mycelium | 26 |