کنگره بین المللی زیست فناوری گیاهان دارویی و قارچ های کوهی

صفحه اصلی / چهارمین کنگره بین المللی و پنجمین همایش ملی زیست فناوری گیاهان دارویی و قارچ های کوهی

The effect of different irrigation regimes on the number of flowering branches of peppermint under different light intensities

نویسندگان :

Saeid Hazrati¹ Masoud Hasanpour² Hamid Mohammadi³

1- شهید مدنی آذربایجان 2- دانشگاه شهید مدنی آذربایجان 3- دانشگاه شهید مدنی آذربایجان

کلمات کلیدی :

Flowering branches،Irrigation،Light intensity،Mint

چکیده :

Environmental conditions and ecological factors play a significant role in the growth and performance of medicinal plants, which is the main factor in determining how plants adapt to environmental conditions. Climate change and the increasing light intensity and temperature has resulted in a decrease in water resources in field conditions, thus, plants become stressed. Plants are usually exposed to a combination of different abiotic stresses at different stages of their growth. The simultaneous occurrence of these environmental stresses is one of the most important factors affecting growth, performance, and quality of aromatic and medicinal plants, which affects the morphological state of the plants, especially those that flower, by disrupting the balance of the factors within the plant, and a flowering branch is one of the most important determinants of yield and quality for medicinal and aromatic plants. Among the Lamiaceae family, peppermint (Mentha × piperita) is the most important aromatic plant. For this purpose, a split plot experiment was studied in three replications using a random complete block design in two years to examine the effects of different levels of irrigation regimes on the number of flowering branches in peppermint under different light intensities. Experimental treatments included levels of different intensities of light (control (full sunlight), 75% sunlight and 50% sunlight) as the main factor and irrigation levels including the control (irrigation after depleting 25% of the field capacity (FC)), moderate stress (irrigation after 50% FC) and severe stress (irrigation after 75% of FC) as second factors. The results showed that, in the first year, the most flowering branches were obtained in the treatment without drought stress under 50% sunlight intensity (19.66 per plant) and in the second year and the average of two years, without water stress and under full sunlight intensity (24.33 per plant). While the lowest number of flowering branches were obtained in the first year under irrigation stress after depleting 75% of FC and full light intensity, in the second year, 75% of full sunlight with water stress. Also, the number of flowering branches was significantly higher in the second year compared to the first year in the mint plant in both years. In the first year, the decrease in light intensity caused the number of flowering branches to increase, but in the second year, it caused the number to decrease. Furthermore, it can be concluded that the mint plant is sensitive to high light intensity and water stress in the first year of cultivation. Mint in the first year of cultivation, it is less affected by the reduction in light intensity, and its branches produce more flowers.