Effect of Inoculation with Mycorrhizal Fungi on Growth and Nutrient Uptake of Grapevine Genotypes (Vitis spp.)

The effects of Arbuscular Mycorrhizal (AM) fungus species Glomus mosseae and Glomus intraradices on growth and leaf nutrition status of grapevine rootstocks, '5 BB' (Vitis berlandieri x Vitis riparia), '1613 C' (Vitis solonis x Vitis riparia cv. `Gloire de Montpellier'), '41 B' (Viris vinifera L. cv. `Chasselas' x Vitis berlandieri) and Vitis vinifera L. cv. 'Early Cardinal', were investigated. Dormant cuttings of representative genotypes were rooted in perlite and transplanted into black polyethylene bags containing fumigated growing medium. Mycorrhizal inoculation was performed using 1000 mycorrhizal spores per plant, 50 mm under rooted grape cuttings. The development of the grapevine genotypes was significantly affected by mycorrhizal inoculation. Both fungi promoted significant increases in shoot and root growth and leaf P and Zn concentrations. Considering the overall results, G. mosseae appears to have a greater effect on shoot growth parameters, and G. intraradices appears to have a greater effect on root growth parameters and leaf P and Zn concentrations. Therefore, G. intra radices would be anticipated to aid vines to overcome element deficiencies in especially areas where P and Zn deficiency predominate.