Drought-resistance of hybrids of apple tree cultivar Vydubytska plakucha in conditions of Forest-Steppe of Ukraine

• Main Authors: I.V. Goncharovska, V.V. Kuznetsov, V.M. Galushko, G.O. Antonjuk
• Format: Article
• Language: English
• Published: NAS of Ukraine, M.M. Gryshko National Botanical Garden 2017-08-01
• Series: Інтродукція Рослин
• Subjects: apple hybrids; drought-resistant; water-retaining ability; turhorisation
• Online Access: http://plantintroduction.org/index.php/pi/article/view/72
• ISSN: 1605-6574; 2663-290X

Objective – to determine the drought-resistance of hybrids of Vydubytska plakucha apple × Malus domestica Borkh cultivars in Forest-Steppe of Ukraine, waterlogging of tissues, water-retaining capacity, the general deficit of water in leaves and their turgorisation. Material and methods. The drought tolerance of 15 hybrids of the apple of the Vydubytska plakucha × cultivers M. domestica from the gene-pool M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Hyb ri dization was carried out to obtain decorative forms, apple trees with a sign of «weeping», inherited from the сultivar Vydubytska plakucha. Results. The greatest amount of water was recorded in the leaves of hybrids of the V. p. × Khoroshovka (56.8 %), V. p. × 1–22 (54.3 %), the smallest – in the leaves of hybrids V. p. × Oranzheve (51.6 %), V. p. × Uralske nalyvne (50.0 %). Water deficiency in the leaves was 15–25 %, which does not lead to lethal damage to plants. A high percentage of the moisture content was characteristic of the V. p. × Khoroshovka, and the lowest was the hybrid of the V. p. × Renet Koksa Oranzhevyy. Conclusion. The most drought-resistant are the hybrids of V. p. × Khoroshovka and V. p. × Luyiza, less stable – V. p. × Renet Koksa Oranzhevyy, V. p. × Uralske nalyvne, V. p. × Antor, the intermediate place is occupied by hybrid V. p. × Uelsi.