Yazar "Tangolar S." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • [ X ]
    Öğe
    Effect of inoculation with mycorrhizal fungi on growth and nutrient uptake of grapevine genotypes (Vitis spp.)
    (2010) Ozdemir G.; Akpinar C.; Sabir A.; Bilir H.; Tangolar S.; Ortas I.
    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' (Vitis 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. intraradices would be anticipated to aid vines to overcome element deficiencies in especially areas where P and Zn deficiency predominate. © Verlag Eugen Ulmer KG, Stuttgart.
  • [ X ]
    Öğe
    Physiological and biochemical responses to iron stress conditions depend on grapevine genotype
    (Parlar Scientific Publications, 2017) Ozdemir G.; Tangolar S.; Dasgan H.Y.
    One of the most common nutritional deficiencies in vineyards is iron chlorosis due to high lime content and pH. In this study, physiological responses to iron deficiency stress were compared in nine grapevine genotypes. For this purpose, plants were grown in hydroponic culture having low iron [(-) Fe] or sufficient iron/control [(+) Fe] conditions. The [(-) Fe] plants were grown with 10-6 M Fe EDTA for 40 days followed by 2×10-7 M FeEDTA for 20 days. [(+) Fe] plants were grown with 10-4 M Fe EDTA. To create iron stress, 10 mM NaHCO3 was added to the solution. In plants, active and total iron contents (mg/L), shoot active and total iron contents (mg/L), leaf chlorophyll status (SPAD), and root ferric chelate reductase enzyme activity were examined. All parameters were reduced in plants that were grown under iron deficient conditions. The highest active iron concentration in leaves was 108.27 mg/L in 1103 P grown in [(+) Fe] conditions. The chlorophyll content of leaves was 27.93 (1616 C) in [(+) Fe] conditions. The ferric chelate reductase enzyme activity of roots was higher in iron stress conditions. The highest level was 1395.78 in the 140 Ru genotype. © by PSP.