Code:
OIV
401
Name: Resistance to iron chlorosis
Category:
,
GROUP OF CHARACTERISTICS,
ORGAN
Subcategory:
CHLOROSIS,
ABIOTIC RESISTANCE,
PLANT
Code: OIV 401
Name: Resistance to iron chlorosis
Category: , GROUP OF CHARACTERISTICS, ORGAN
Subcategory: CHLOROSIS, ABIOTIC RESISTANCE, PLANT
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
Iron chlorosis has to be assessed on soils with high lime content and/or during spring on heavy wet soils. It is critical to indicate whether the variety under description was grafted, growing on own roots or as a rootstock. 1 = Yellow leaves, more than 10 % of leaf surface with necroses, stunted shoots. 3 = Mature leaves with pure yellow colour, beginning necroses between main veins. 5 = Pure yellow leaves with green main veins. 7 = Pale green leaves with appearance of a net of fine green veins. 9 = Dark green leaves.Level expression
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