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مطالعه اثر ترکیب سالیسیلیک اسید با برخی علفکشها بر فلورسانس کلروفیل a و برخی صفات مورفولوژیکی علفهرز سلمهتره (Chenopodium album) | ||
| دانش علفهای هرز ایران | ||
| مقاله 7، دوره 13، شماره 2، دی 1396، صفحه 175-191 اصل مقاله (681.32 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijws.2017.1302.07 | ||
| نویسندگان | ||
| سهیلا پورحیدر غفاربی1؛ حمید رحیمیان مشهدی* 2؛ حسن علیزاده3؛ سیروس حسن نژاد4 | ||
| 1گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه تهران | ||
| 2هیئت علمی گروه زراعت دانشگاه تهران | ||
| 3عضو هیئت علمی دانشگاه تهران | ||
| 4دانشیار علوم علفهایهرز، گروه اکوفیزیولوژی گیاهی، دانشکده کشاورزی، دانشگاه تبریز | ||
| چکیده | ||
| فتوسنتز در گیاهان به شدت تحت تاثیر تنش است. یکی از روشهای ارزیابی تنشهای مختلف همچون اثر تیمار علفکشی روی فتوسنتز، بررسی فلورسانس کلروفیل a است. استفاده از تنظیم کنندههای رشد گیاهی مانند سالیسیلیک اسید (SA)، یکی از راهکارهای غلبه بر بینظمیهای فیزیولوژیکی ایجاد شده در گیاه است. از این رو، به منظور مطالعه اثر ترکیب SA با علفکشهای بنتازون، بروموکسینیل+ امسیپیآو توفوردی + امسیپیآ بر رفتار فیزیولوژیکی سلمهتره، آزمایشی گلخانهای در قالب طرح پایه بلوکهای کامل تصادفی با سه تکرار در دانشکده کشاورزی دانشگاه تبریز در سال 1395 اجرا شد. نتایج نشان دهنده کاهش فلورسانس حداکثر (Fm)، فلورسانس متغیر(Fv)، حداکثر کارایی فتوشیمیایی فتوسیستم II (Fv/Fm)، کارایی کمپلکس تجزیه کننده آب به عنوان دهنده الکترون فتوسیستم II (Fv/Fo)، و شاخص عملکرد (PIABS) و افزایش فلورسانس حداقل (Fo) و هدررفت گرمایی (Fo/Fm) بوتههای سلمهتره در پی تیمار با بنتازون و بروموکسینیل + امسیپیآ بود. وزن خشک و شاخص کلروفیل این علفهرز در تیمار شاهد (عدم کاربرد SA)، به ترتیب 3/4 و 1/2 درصد افزایش داشت، اما در تیمارهای بنتازون، بروموکسینیل + امسیپیآ و توفوردی + امسیپیآ به ترتیب 6/41، 7/13 و 6/13 درصد و 2/32، 4/36 و 7/18 درصد کاهش یافت. SA نه تنها کارایی بنتازون و بروموکسینیل + امسیپیآ را کاهش نداد، بلکه موجب افزایش کارایی این دو علفکش شد. | ||
| کلیدواژهها | ||
| سالیسیلیک اسید؛ شاخص کلروفیل؛ علفکش؛ فلورسانس کلروفیل a؛ وزن خشک | ||
| عنوان مقاله [English] | ||
| Study on the Effect of Salicylic Acid (SA) Mixture with Some Herbicides on Chlorophyll a Fluoresce and some Morphological Traits of Common Lambesquarts (Chenopodium album) | ||
| نویسندگان [English] | ||
| Soheila Porheidar Ghafarbi1؛ Hamid Rahimian2؛ Hassan Alizadeh3؛ Sirous Hassannejad4 | ||
| 1Department of Agronomy and Plant Breading, Faculty of agriculture, University of Tehran | ||
| 2Department of Agronomy and Plant breading, University of Tehran | ||
| 3Department of Agronomy and Plant breading, University of Tehran | ||
| 4Associate of Weed Science, Department of Plant Eco-Physiology, Faculty of Agriculture, University of Tabriz | ||
| چکیده [English] | ||
| Photosynthesis in plants is strongly influenced by stress. Evaluation of chlorophyll a fluoresce is one of the methods for assessment the different stresses effects such as herbicide on photosynthesis. Application of plant growth regulators like salicylic acid (SA), is one of the strategies to overcome for physiological disorders in plant. Therefore, to study the effect of SA mixture with Bentason, Bromoxynil+MCPA and 2,4-D+MCPA herbicides on physiological behavior of Common lambesquarts (Chenopodium album L.), a greenhouse experiment was conducted in randomized complete block design with three replications in Agricultural faculty of University of Tabriz in 2016. The results indicated a reduction in maximum fluorescence (Fm), variable fluorescence (Fv), maximum quantum yield of photochemistry (Fv/Fm), efficiency of the water-splitting complex on the donor side of PSII (Fv/Fo), and performance index (PIABS), and an increase in minimum fluorescence (Fo) and photosystem II antenna (Fo/Fm) of Common lambesquarts subjected to Bentason and Bromoxynil+MCPA. Dry weight and chlorophyll index in control treatment (without SA) increased 4.3% and 2.1% respectively, but in Bentason and Bromoxynil+MCPA and 2,4-D+MCPA treatments, these two indexes reduced 41.6%, 13.7%, 13.6% and 32.2%, 36.4%, 18.7%, respectively. SA not only did not reduce the Bentason and Bromoxynil+MCPA efficiency, but also increased efficiency of these two herbicides. | ||
| کلیدواژهها [English] | ||
| Chlorophyll a fluorescence, Chlorophyll index, Dry weight, herbicide, salicylic acid | ||
| مراجع | ||
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