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Chlorophyll a fluorescence of common cocklebur (Xanthium strumarium L.) in response to combination of s-metolachlor + mesotrione + terbuthylazine herbicide with and without almond oil | ||
| Journal of Plant Physiology and Breeding | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 09 خرداد 1401 | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22034/jppb.2022.49788.1255 | ||
| نویسندگان | ||
Sirous Hassannejad  1؛ Soheila Porheidar Ghafarbi2؛ Elham Abbasvand3
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| 1Department of Plant Ecophysiology, University of Tabriz, Tabriz, Iran | ||
| 2Dryland Agricultural Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Maragheh, Iranا | ||
| 3PHD student of crop physiology, Department of Plant Ecophysiology, University of Tabriz, Tabriz, Iran | ||
| چکیده | ||
| Chlorophyll a fluorescence characteristics is a useful tool for studying the effects of herbicides with different modes of action on photosynthetic apparatus. In this research, the chlorophyll fluorescence responses of common cocklebur (Xanthium strumarium L.) plants were studied two days after the sole application of different doses of s-metolachlor + mesotrione + terbuthylazine herbicide and in combination with almond oil. The quantum yield of energy dissipation (F0/Fm) and minimum fluorescence (F0) values of the plants treated with the 100% herbicide dose increased significantly from 0.16 to 0.25 and 296 to 391 since two days after treatment, respectively. These changes in PSII resulted in the reduction of the maximum quantum yield of PSII (Fv/Fm) and the PSII function index (PIABS). Moreover, the application of high doses of herbicide decreased the variable fluorescence (Fv), the maximum fluorescence (Fm), the size of the plastoquinone pool on the reducing side of photosystem II (Area), the maximum efficiency of water-splitting complex on the donor side of the photosystem II (Fv/F0), the energy needed for the closure of reaction centers (Sm), and the intermediate redox state of Quinone A in the period from F0 to Fm. This study revealed that the use of almond oil with s-metolachlor + mesotrione + terbuthylazine herbicide caused further reduction of the chlorophyll a fluorescence parameters in common cocklebur. The correlation between dry weight taken 28 days after herbicide application and Fv/Fm measured two days after herbicide application showed that the quick assessment of the chlorophyll a fluorescence parameters can increase the speed of the herbicide performance evaluation up to 12 times. The steeper slope of the curve for the herbicide with almond oil compared to the herbicide alone showed that almond oil could be an adjuvant to increase the herbicide efficiency. | ||
| کلیدواژهها | ||
| Almond oil؛ Common cocklebur؛ Correlation؛ Herbicide؛ Photosynthetic apparatus | ||
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آمار تعداد مشاهده مقاله: 13 |
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