Еколого-біологічні показники представників роду Quercus L. у зелених насадженнях Кривого Рогу

• Дата: 2018
• Автор: Lapteva, O.V.
• Формат: Стаття
• Мова: English
• Опубліковано: M.M. Gryshko National Botanical Garden of the NAS of Ukraine 2018
• Онлайн доступ: https://www.plantintroduction.org/index.php/pi/article/view/25
• Назва журналу: Plant Introduction

Objective – to study basic biometrical, ecological and biological characteristics of the genus Quercus L. representatives in green plantations of Kryvyi Rih and in the arboretum of Kryvyi Rih Botanical Garden of the NAS of Uk raine. Material and methods. Modern state of the genus Quercus species in green plantations of Kryvyi Rih and the arboretum of Kryvyi Rih Botanical Garden of the NAS of Ukraine is studied. To study the age of trees, the diameter of trunk was measured at a height of 1.3 m and their whole height. The vital state of plants was assessed by L.S. Savelieva 8-point scale (1975), drought resistance – according to S.S. Pyatnitsky 6point scale (1961), frost resistance – according to I.A. Dobrovolsky 5-point scale (1961), the intensity of blossoming and fruiting – acording to A.G. Golo vach 6-point scale (1980). Results. The most of introduced species of the genus Quercus in the collection of Kryvyi Rih Botanical Garden of the NAS of Ukraine reach the sizes corresponding to their age. The trees have a high viability score (VIIVIII). According to the results of the analysis in the park plantations of Kryvyi Rih city, Q. robur L. trees aged from 7 to 200 years were found. The 30–40 yearsaged trees are predominating, their height is 15–18 m, a trunk diameter – 25–40 cm. The vital state of the most of plants corresponded to VII and VIII scores, but there were oaks, the index of which did not exceed V and VI scores. Plants of the genus Quercus are well developed, regularly bloom and bear fruit and are practically unaffected by pests and diseases, except for the less stable species Q. robur. Conclusions. The genus Quercus in parks and squares of Kryvyi Rih is represented by three species and one cultivar, in the collection of Kryvyi Rih Botanical Garden of the NAS of Ukraine – 10 species and one cultivar. They have a good vital state and high decorativeness. Perspective for regional culture by complex of ecological and biological properties are following species: Q. castaneifolia C.A. Mey., Q. imbricaria Stev., Q. macranthera Fisch. et Mey. which were held in Kryvyi Rih Botanical Garden of the NAS of Ukraine for many years introductory test.