Code:
OIV
403
Name: Resistance to drought
Category:
,
GROUP OF CHARACTERISTICS,
ORGAN
Subcategory:
DROUGHT,
ABIOTIC RESISTANCE,
PLANT
Code: OIV 403
Name: Resistance to drought
Category: , GROUP OF CHARACTERISTICS, ORGAN
Subcategory: DROUGHT, 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
The testing of rootstocks must be assessed after grafting with a Vitis vinifera variety. Comparisons must be conducted during the berry set stage after a period without water supplies to reach a drought conditions. The length of the period may vary depending on the pedo-climatic characteristics of the environment. Comparisons must be done with reference varieties grown in the same area, considering only basal leaves of the shoots. 1 – Necrotic or totally dry leaf with leaf drop. 3 – Yellowish and leaf closure with necrosis. 5 – Leaf folded in on itself and yellowish leaf. 7 – Green and not turgid leaf, with peripheral yellowish. 9 – Totally green and turgid leaf.Level expression
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