Вплив посухи на алелопатичні властивості Pinus sylvestris L.

• Дата: 2020
• Автор: Rositska, N.V.
• Формат: Стаття
• Мова: English
• Опубліковано: M.M. Gryshko National Botanical Garden of the NAS of Ukraine 2020
• Онлайн доступ: https://www.plantintroduction.org/index.php/pi/article/view/1511
• Назва журналу: Plant Introduction

The objective of this study is to evaluate the influence of drought on the allelopathic activity of Pinus sylvestris L. plants at the M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine. Material and methods. The choice of study objects was due to their habitat: plants of P. sylvestris grew in compliance with the necessary agricultural technology, including regular irrigation at site one (control) and in the conditions of drought at site two that models natural ecosystems (experiment). The allelopathic activity of leaves and soil was determined. In the model experiments, Lepidium sativum ‘Azhur’, Triticum aestivum ‘Poliska 90’, Amaranthus caudatum ‘Rothschwanz’ were applied as the test plants. Results of the current study revealed that the allelopathic potential of needles and rhizosphere soil of P. sylvestris depend not only on the species but also on the drought conditions. The inhibitory effect was stronger against root elongation than shoot elongation of seedlings. Conclusion. This study provides laboratory-based evidence of the allelopathic effect of P. sylvestris exudates under drought stress on model plants. Studies showed that the plants that were grown under conditions of lower soil moisture exhibit a more substantial inhibitory effect or slightly stimulate the growth of test objects in comparison with plants that had a better water supply. This testifies to the relationship between soil moisture and seasonal allelopathic activity of the plants.