THE INFLUENCE OF VARIETAL CHARACTERISTICS ON THE DURATION OF INTERPHASE AND VEGETATION PERIODS OF MEDICINAL HYSSOP

Keywords: essential oil crops, medicinal hyssop (Hyssopus officinalis), growth and development phases of the crop, climate changes, sum of effective temperatures

Abstract

Monitoring of phenological changes in the development of medicinal hyssop taking into account modern climate challenges is a relevant topic for research, since stress factors associated with climate changes significantly affect the productivity of medicinal hyssop. The purpose of the research was to investigate the formation of the yield of the green mass of medicinal hyssop with the use of biologically active fertilizers in the conditions of natural moistening of the Southern Steppe of Ukraine. Studies show that temperature fluctuations and changes in the level of atmospheric precipitation significantly change the development vector of hyssop, slowing down or accelerating certain phases of its life cycle. In this article, a comparative analysis of the reactions of different varieties of medicinal hyssop to climate change is carried out. The results. In the course of research, it was established that young medicinal hys- sop plants show a faster growth of vegetative mass, more actively form bushes and have a shorter period of flowering and seed ripening – from 5 to 13 days, compared to plants of the third year of life. However, plants of the 3rd year of life show better frost resistance, restore vegetation earlier and demonstrate increased resistance to dry conditions observed in 2024. This resistance of older plants is associated with the development of the bush and the presence of dormant buds, which contribute to their adaptation in stressful conditions. Studies of the duration of interphase and vegetation periods of medicinal hyssop confirm that the growth and development of this plant significantly depend on the complex influence of climatic conditions and biological specifications of varieties. Climatic factors, such as air temperature, rainfall play a decisive role in the adaptation of hyssop to specific environmental conditions, which, in turn, significantly affects its morphological characteristics and overall productivity. Conclusion. Thus, a comprehensive approach to the study of the influence of climatic and biological factors is necessary to understand the evolution of hyssop in the conditions of modern agricultural production.

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Published
2025-02-28
Section
MELIORATION, ARABLE FARMING, HORTICULTURE