اثر محلول‌پاشی عنصر روی بر عملکرد و اجزای عملکرد ارقام سویا در شرایط کمبود آب

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه تربیت مدرس

چکیده

به­منظور بررسی اثر تنش کمبود آب و محلول­پاشی عنصر روی بر صفات مورفولوژیکی، عملکرد و اجزای عملکرد ارقام سویا، آزمایشی به صورت اسپلیت پلات فاکتوریل در قالب طرح بلوک­های کامل تصادفی با سه تکرار انجام گرفت. عامل ‌اصلی شامل سطوح مختلف تنش‌ کم آبی در سه سطح (بدون تنش، تنش در مرحله رشد رویشی تا 10 درصد    گل­دهی، تنش در مرحله گل­دهی تا 10 درصد  غلاف­بندی) و عامل فرعی حاصل از ترکیب دو عامل رقم با دو سطح (L17 و کلارک 63) و عامل محلول­پاشی در سه سطح (بدون محلول­پاشی، محلول­پاشی آب خالص و محلول­پاشی سولفات روی (5 در هزار)) بود. نتایج نشان داد که اکثر صفات تحت تأثیر تیمارهای آزمایشی قرار گرفتند. تنش در هر دو مرحله باعث کاهش چشمگیری در عملکرد دانه، عملکرد بیولوژیکی و صفات مورفولوژیکی هر دو رقم سویا شد. به­طوری­که تغییرات به­وجود آمده در صفات مورفولوژیکی و عملکرد دانه در کرت­های تنش دیده در مرحله­ی رشد زایشی مشهودتر بود. محلول­پاشی با سولفات روی سبب افزایش عملکرد و اجزای عملکرد در هر دو رقم گردید. ارقام مورد بررسی پاسخ متفاوتی به تیمارهای آزمایشی داشتند. کلارک 63 از لحاظ تحمل شرایط کم آبی نسبت به رقم L17 برتری داشت ولی محلول­پاشی روی، عملکرد دانه رقم L17 را بیشتر افزایش داد. به­طور کلی محلول­پاشی روی توانست اثرات مضر ناشی از تنش آب را کاهش دهد و شرایط رشد را برای گیاه بهبود بخشد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of Foliar Zinc Application on Yield and Yield Components of Soybean Cultivars Under Water Deficit

نویسندگان [English]

  • S Karamy
  • SA Mohammad Modares-Sanavy
  • F Ghanati
  • M Pourdehghan
چکیده [English]

In order to study the effect of water deficit stress and zinc foliar application on morphological traits, yield and yield components of soybean cultivars, an experiment was conducted in randomized complete block design arrangement in split plat factorial. Main factor was three levels of drought stress (non stress, water stress  in vegetative growth stage to %10 flowering  and water stress in flowering stage to %10 pod stage) and sub factor was combination of foliar zinc application and cultivar. Foliar zinc application levels (non foliar application, water foliar application and Zinc Sulfate (5000 ppm)) foliar application and cultivars (L17 and Clarck 63) were in three and two levels, respectively. Results showed that traits were affected by treatments. Water deficit stress obviously decreased the yield, yield components, biomass and morphological traits of seed in both cultivars. Variation in morphological traits and yield were more prominent in plots stressed in reproductive stage. Zinc sulfate foliar application increased yield and yield components. Soybean cultivars were different in response to treatments. Clark 63 was more desirable than L17 under water deficit stress. But zinc foliar application in L17 was more effective than clark 63 and increased its yield. In general, foliar application of zinc decreased harmful effects of oxidative stress due to water deficit stress and improved growth conditions for plants.

کلیدواژه‌ها [English]

  • Foliar Zinc sulfate Application
  • Morphological Traits
  • Soybean
  • Water Deficit
  • Yield
  • Yield Components

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دانش کشاورزی وتولید پایدار
دوره 23، شماره 4.1 - شماره پیاپی 4
ویژه نامه زمستان 92
اسفند 1392
صفحه 117-130

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