اثر علف‌های هرز خارشتر (Alhagi maurorum L.) و ازمک (Cardaria draba L.) بر جذب عناصر معدنی در گندم

نوع مقاله: پژوهشی

نویسندگان

مرکز آموزش عالی شهید باکری میاندوآب، دانشگاه ارومیه، ارومیه، ایران

چکیده

آللوپاتی می­تواند بر رشد گیاهان اثر کند و محتوای مواد غذایی آنها را تغییر دهد. هدف تحقیق حاضر مطالعه اثر آللوپاتی خارشتر (Alhagi maurorum L.) و ازمک (Cardaria draba L.) که از علف­های هرز مهم مزارع گندم هستند، بر جذب عناصر غذایی در این محصول بود. آزمایش­های گلدانی برای مطالعه اثر آللوپاتی خاک ریزوسفری خارشتر و ازمک بر محتوای مواد غذایی معدنی در گندم طراحی شد. در گیاهان گندم کشت شده در خاک ریزوسفری خارشتر و ازمک جذب عناصر غذایی پرمصرف (NO3-، K+، Ca2+ و P) و کم مصرف (Fe2+ و Cu2+) در ریشه و اندام هوایی کاهش یافت، آللوپاتی بر جذب Mg2+، Mn2+ و Zn2+ تقریبا اثری نداشت. اثر آللوپاتی خارشتر به طور معنی­داری بیشتر از ازمک بود. به نظر می­رسد کاهش جذب عناصر معدنی به‌دلیل اثر آللوپاتی مواد آللوشیمیایی ترشح شده از ریشه گیاهان ازمک و خارشتر بوده است.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of Alhagi maurorum and Cardaria draba weeds on mineral nutrients absorption in wheat

نویسندگان [English]

  • Nayer Mohammadkhani
  • Moslem Servati
Shahid Bakeri High Education Center of Miandoab, Urmia University, Urmia, Iran
چکیده [English]

Allelopathy can affect the plant growth and change the soil nutrient contents. The aim of this study was evaluation of the allelopathic effects of Alhagi maurorum L. and Cardaria draba L. as two important weeds in wheat fields on nutrient absorption of this crop. Pot experiments were designed to study the allelopathic effects of A. maurorum and C. draba shoots on mineral nutrient contents in wheat. The absorption of high demand (NO3-, K+, Ca2+ and P) and low demand micronutrients (Fe2+ and Cu2+) in roots and shoots of wheat plants reduced in plants cultivated on rhizospheric soil of A. maurorum and C. draba. Allelopathy did not affect absorption of Mg2+,  Mn2+, and Zn2+. Allelopathic effect of A. maurorum was significantly (P<0.05) higher than C. draba. It seems that decrease in mineral nutrients absorption was because of allopathic effects of the released allelochemicals from the roots of C. draba and A. maurorum.

کلیدواژه‌ها [English]

  • Allelochemical
  • Allelopathy
  • Interactions
  • Nutrients Content
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