Seedless grape varieties winter hardiness at the initial stages of development in a sharply continental climate zone

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The purpose of research is to study the influence of meteorological conditions of the winter-spring period on the safety of the eyes of the introduced seedless grape varieties in order to identify the most winter-hardy of them in the zone of the sharply continental climate of the North-Western Caspian Sea. Studies to research the degree of winter hardiness of seedless grape varieties at a young age were carried out in the period from 2020 to 2021 at the collection site of the Federal State Budgetary Scientific Institution "Caspian Agrarian Federal Scientific Center of the Russian Academy of Sciences". The experimental plot is located in the Chernoyarsky District of the Astrakhan Region. The object of research was a collection of grapes, consisting of seventeen varieties: Azak, Attika, Afrodita, Balet, Veles, Zolotistyj, Zolotce, Iskander, Luchiya, Nahodka, Neptun, Roza, Stoletie, Tangra, Himrod, Yupiter. The variety Luchistyj, zoned in the Nizhnevolzhsky District, was adopted as the standard. The culture of grapes is covering, own-rooted. Accounts and observations were carried out according to the method of M.A. Lazarevsky. During the research period, the unstable temperature background of the winter period and return frosts down to -4.7 °C in April had a negative impact on the safety of grape eyes. The maximum preservation of eyes in the experiment (from 40.3 to 59.5 %) was characteristic of the varieties Ballet, Zolotistyj, Luchiya, Neptun, Roza, Stoletie, Himrod, which can be tentatively classified as moderately resistant in terms of winter hardiness. The rest of the studied varieties with the safety of eyes from 23.8 to 39.7 % were characterized as weakly resistant.

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Grapes, seedless varieties, introduction, preservation of eyes, winter hardiness

Короткий адрес: https://sciup.org/140295585

IDR: 140295585   |   DOI: 10.36718/1819-4036-2022-6-47-51

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