ارزیابی فنولوژی، دمای کانوپی و صفات فیزیولوژیکی مرتبط با عملکرد سویا تحت تاثیر پرایمینگ، محلول‌پاشی عناصر و علف‌های هرز

نوع مقاله : مقاله کامل علمی- پژوهشی

نویسندگان

1 دانشیار، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران

2 دانش‌آموخته دکتری اگروتکنولوژی، ، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران،

10.22069/ejcp.2026.24103.2711

چکیده

سابقه و هدف: آلودگی به علف‌های هرز محدودیتی مداوم در بسیاری از مناطق تولید سویا بوده که از طریق رقابت برای مواد مغذی، آب و نور بر رشد سویا تأثیر می‌گذارد. از این رو کاهش تنش علف‌های هرز یک عامل کلیدی در تولید موفقیت‌آمیز این گیاه است. بهبود توانایی رقابتی سویا در مقابل علف‌های هرز با مدیریت صحیح تغذیه و پرایمینگ بذر، به عنوان ایمن‌ترین راهبرد‌ها در رویکرد مدیریت علف‌های هرز در نظر گرفته شده است. این پژوهش تأثیر پرایمینگ بذر و محلول‌پاشی عناصر ریزمغذی بر فنولوژی، برخی صفات فیزیولوژیکی و عملکرد دانه و پروتئین سویا در حضور علف‌های هرز مورد بررسی قرار گرفت.
مواد و رو‌ش‌ها: اثر پرایمینگ بذر و محلول‌پاشی عناصر ریزمغذی بر صفات فنولوژیکی، دمای کانوپی، سطح برگ و عملکرد دانه و پروتئین سویا رقم کوثر با حضور و بدون حضور علف‌های هرز به صورت آزمایش فاکتوریل بر پایه بلوک‌های کامل تصادفی طی دو سال زراعی 1400-1399 و 1401-1400در قروه (کردستان) در سه تکرار بررسی شد. پرایم اسید سالیسیلیک با غلظت 5/0 میلی‌مولار ، هیدروپرایم و بدون پرایم، وجین دستی علف‌های هرز در سه سطح بدون وجین، یک‌بار وجین، دوبار وجین و محلول‌پاشی عناصر ریزمغذی در چهار سطح محلول‌پاشی با آب (شاهد)، سولفات روی با غلظت 03/0 درصد، سولفات منگنز با غلظت 03/0 درصد و کلات آهن 9 درصد مورد آزمایش قرار گرفت.
یافته‌ها: نتایج نشان داد که بذور پرایم شده با سالیسیلیک‌اسید در بین تیمارهای مورد بررسی، به زمان کمتری جهت سبز شدن نیاز داشت. گیاهان تحت تنش علف‌های هرز (بدون پرایم و بدون وجین) نسبت به گیاهان حاصل از پرایم بذور در شرایط با/بدون وجین، روز از سبز شدن تا گلدهی بیشتری داشتند و کمترین تعداد روز از سبز شدن تا گلدهی در تیمار پرایم بذر با سالیسیلیک اسید و دوبار وجین مشاهده شد. اعمال پرایمینگ بذر با آب و سالیسیلیک اسید موجب کاهش تعداد روز از گلدهی تا نیام‌دهی در هر دو سال مورد مطالعه شد و وجین علف‌های هرز، از تعداد روز از گلدهی تا نیام‌دهی سویا نسبت به تیمار بدون وجین کاست. شاخص سطح برگ گیاهان رشد یافته در شرایط بدون وجین، به طور معنی‌داری نسبت به سایر تیمارهای مورد بررسی کمتر بود. دوبار وجین علف‌های هرز در شرایط بدون پرایم و محلول‌پاشی با آب، موجب افزایش 12/20 و 76/24 درصدی شاخص سطح برگ سویا به ترتیب نسبت به تیمار یکبار وجین و بدون وجین شد. پرایمینگ بذر با آب و سالیسیلیک‌اسید در شرایط بدون وجین علف‌های هرز و محلول‌پاشی با آب، به ترتیب موجب افزایش 02/54 و 87/74 درصدی شاخص سطح برگ سویا شد. در شرایط پرایم/بدون پرایم، وجین علف‌های هرز موجب افزایش عملکرد پروتئین سویا شد و محلول‌پاشی با آهن این شرایط را بهبود بخشید. در اکثر صفات مورد بررسی، پیش تیمار بذر با سالیسیلیک اسید نسبت به پیش تیمار بذر با آب، توانست در حضور علف‌های هرز و بدون حضور علف‌های هرز، شرایط مطلوب‏تری را ایجاد کند به طوری که با اعمال پرایم سالیسیلیک اسید با یک بار وجین و محلول‌پاشی آهن، عملکرد دانه سویا به اندازه‌ی عملکرد تیمار پرایم با سالیسیلیک اسید همراه با محلول‌پاشی با منگنز و روی با دوبار وجین، بهبود یافت.
نتیجه‌گیری: حضور علف‌های هرز موجب طولانی شدن تمامی صفات فنولوژیکی موردمطالعه به جز تعداد روز تا سبز شدن و طول دوره گلدهی شد و پرایمینگ بذر با سالیسیلیک‌اسید و محلول‌پاشی آهن توانست موجب تسریع در ظهور مراحل فنولوژیکی و افزایش شاخص سطح برگ و عملکرد دانه در شرایط با و بدون وجین علف‌های هرز شود. لذا می‌توان عدم انجام وجین علف‌های هرز را حداقل به میزان یک‌بار، بدون کاهش در عملکرد دانه و سایر صفات مورد بررسی با به کارگیری پرایمینگ بذر با سالیسیلیک اسید و محلول‌پاشی با عناصر بخصوص کلات آهن، پیشنهاد داد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of phenology, canopy temperature, and physiological traits related to soybean yield under influence of priming, foliar application of elements and weeds

نویسندگان [English]

  • Ali Sepehri 1
  • Hamid Bagheri 2
1 Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
2 Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
چکیده [English]

Background and objectives: Although soybean cultivation is increasing in Iran, weed infestation is a persistent and complex limitation in many production areas of this plant, which affects soybean growth and development through competition for nutrients, water, and light. Therefore, strategies to prevent weed stress are a key factor in successful soybean production, and improving soybean competitive ability against weeds by nutritional management and seed priming technique are considered as the safest and most sustainable strategies in weed management approach. Therefore, the effect of seed priming and foliar application of micronutrients was investigated on phenology, some physiological traits, and soybean grain and protein yield in the presence of weeds conditions.
Materials and methods: In this study, the effect of seed priming and foliar application of micronutrients on phenological traits, air-canopy temperature difference, leaf area index (LAI), and grain and protein yield of soybean cv. Kousar with and without weeds was investigated as a factorial experiment based on a completely randomized block design during 2020-2021 at Qorveh (Kurdistan province) in three replications. the treatments of this experiment were salicylic acid (SA) priming with a concentration of 0.5 mM, hydropriming and no-priming, hand weeding in three levels no-weeding, once weeding and twice weeding and foliar application of micronutrients in four levels include foliar application with water (control), zinc sulfate with a concentration of 0.03%, manganese sulfate with a concentration of 0.03% and 9% iron chelate.
Results: The results showed that seeds primed with SA required less time to emergence among the treatments studied. Plants under weed stress (no-priming and no-weeding) had more days from emergence to flowering than plants from seed priming in the with/without weeding conditions, and the lowest number of days from emergence to flowering was observed in the SA priming and twice weeding treatment. Applying SA and Hydropriming reduced the number of days from flowering to beginning pod in both years studied, and weeding reduced the number of days from flowering to beginning pod in soybean compared to the no-weeding treatment. The LAI of plants grown in the no-weeding conditions was significantly lower than in the other treatments studied. Twice weeding under no-prime and water foliar application conditions increased soybean LAI by 20.12 and 24.76%, respectively, compared to once weeding and no-weeding treatments. Hydropriming and SA priming under no-weeding and water foliar application conditions increased LAI by 54.02 and 74.87%, respectively. Under prime/no-prime conditions, weeding increased soybean protein yield, and Fe foliar application improved these conditions. In most of the traits studied, SA priming was able to create more favorable conditions in the presence and absence of weeds than hydropriming, so that by applying SA priming with once weeding and Fe foliar application, soybean yield improved to the same extent as the SA priming with Mn and Zn foliar application with twice weedings.
Conclusion: weeds caused prolonged all phenological traits studied except the number of days to emergence and the length of flowering period and SA priming and Fe foliar application was able to accelerate the emergence of phenological stages and increase the LAI and grain yield in with/without weeding conditions. Therefore, it can be suggested no weeding at least once, without reducing grain yield and other studied traits, by using SA priming and foliar spraying with studied micronutrients, especially iron chelate, which its result will be less use of chemical pesticides and reduction of environmental problems, as well as saving time and cost for weeds control in the field.

کلیدواژه‌ها [English]

  • Salicylic acid
  • Priming
  • Weeding
  • Kousar cultiva
  • Micronutrient
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