Özet:

Viticulture constitutes a highly important branch of agriculture production in the world. As it is known viticulture, which can be carried out in a fairly large area, was seriously damaged after the appearance of the phylloxera. Later on, with the determination that American grapevine rootstocks are resistant against this pest, vineyards started to be established with species grafted on these rootstocks and many rootstocks were bred. However, the rootstocks used today have also some disadvantages as well as the advantages they bring in. The primaries of these disadvantages are the poor rooting characteristics and low tolerance shown to some soil conditions. In the present study it was aimed to determine the effects of arbuscular mycorrhizal fungi (AMF) on rooting characteristics and some biochemical compounds of rootstocks. Varying concentrations (10-20 g/l) of AMF were applied to cuttings of Kober 5 BB, 41 B and 110 R American rootstock and the effects of the application on some growth parameters (rooting percentage, shoot length and shoot weight) and some biochemical compounds (chlorophyll, soluble sugar and phenolic compound) were determined. As a conclusion, it was determined that AMF promote shoot and root development of American grapevine rootstocks and that they have a significant potential in terms of biochemical compounds making them potent protector from some stress conditions.

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