Code:
OIV
469
Name: Bunch: degree of resistance to Phomopsis cane and leaf spot
Category:
,
GROUP OF CHARACTERISTICS,
ORGAN
Subcategory:
PHOMOPSIS CANE AND LEAF SPOT ,
BIOTIC RESISTANCE - FUNGUS,
BUNCH
Code: OIV 469
Name: Bunch: degree of resistance to Phomopsis cane and leaf spot
Category: , GROUP OF CHARACTERISTICS, ORGAN
Subcategory: PHOMOPSIS CANE AND LEAF SPOT , BIOTIC RESISTANCE - FUNGUS, BUNCH
Primay descriptor priority list
For a quick characterisation of varieties the Genres CT 96 No81 - partners compiled a Primary description priority list. The list encompasses 14 priority one primary descriptors. The chosen descriptors show a good discriminating power between varieties. Most of them are easy to score.
Description
To observe under conditions favourable to Phomopsis cane and leaf spot (Diaporthe ampelina), largely during the beginning of veraison stage. 1-3 = Presence of necrotic spots on the rachis, epidermal browning in concentric circles, berries covered by purplish fruiting with blackish pycnidia. 5 = Scattered spots on the peduncle of the bunch. 7 = Small necrosis on the stalks. 9 = No visible symptoms.Level expression
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