اثر اسیدسالیسیلیک بر شاخص‌های رشد گیاه ماش (Vigna radiata L.) تحت تنش کم‌آبی

نوع مقاله: پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد گروه زراعت دانشگاه ارومیه، ارومیه، ایران.

2 استادیار گروه زراعت دانشگاه ارومیه، ارومیه، ایران.

چکیده

     به‌منظور بررسی اثر اسیدسالیسیلیک بر برخی از شاخص‌های رشد ماش (Vigna radiata L.) رقم NM92 ، تحت شرایط کم آبی، آزمایشی در قالب طرح کرت‌های خرد شده بر پایه طرح بلوک‎های کامل تصادفی با سه تکرار در سال زراعی 1392-1391 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه ارومیه انجام شد. فاکتورهای آزمایش شامل تنش کم‎آبی به‌عنوان فاکتور اول در سه سطح شاهد (آبیاری پس از رسیدن رطوبت خاک محدوده ریشه‌های کرت‌ها به  Fc75%)، تنش1 (Fc60%) و تنش2 (Fc50%) و محلول‌پاشی اسیدسالیسیلیک، به‌عنوان فاکتور دوم در چهار سطح (0، 1/0، 5/0 و 1 میلی‎مول بر لیتر) بودند. نتایج نشان داد که تیمار  mM5/0 اسیدسالیسیلیک در تمام شاخص‌های رشد بیشترین مقدار را به خود اختصاص داد. این غلظت از اسیدسالیسیلیک میزان ماده خشک، شاخص سطح برگ، سرعت رشد محصول، سرعت رشد نسبی و سرعت جذب خالص بیشتری را در اکثر مراحل رشد نسبت به بقیه غلظت‌ها دارا بود. بنابراین می‌توان استنباط نمود که کاربرد برگی این غلظت از اسیدسالیسیلیک می‌تواند اثرات تنش کم‌آبی بر شاخص‌های رشد را در گیاه ماش تعدیل نماید.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of salicylic acid on growth indices of mung bean (Vigna radiata L.) under water deficit stress

نویسندگان [English]

  • Sajad Qasedi 1
  • Hashem Hadi 2
1 M.Sc. Student . in Agronomy, respectively, Agronomy Department, Urmia University, Urmia, Iran.
2 Assistant prof. in Agronomy, respectively, Agronomy Department, Urmia University, Urmia, Iran.
چکیده [English]

To study the effect of salicylic acid on growth indicesof mung bean, Vigna radiata L. (Var. NM92) under water deficit stress condition, a split-plot experiment was carried out based on a randomized complete block design with three replications in Research Station of Urmia University in 2012. The main factor was water deficit stress with three levels of irrigation at  soil moisture of  75% Fc (control), 60% Fc and 50% Fc field capacity in the root zone), and foliar application of salicylic acid  was considered as sub­-­factor with four levels (0, 0.1, 0.5 and 1 mM). Results showed that application of 0.5 Mm salicylic acid caused the highest values for all the growth indices studied. Salicylic acid 0.5 Mm resulted in the highest total dry matter (TDM), leaf area index (LAI),  crop growth rate (CGR), relative growth rate (RGR) and net absorbsion rate (NAR) in almost all growth stages in comparison to the other treatments and therefore, it can be concluded that foliar application of salicylic acid 0.5 mM can ameliorate the adverse effects of water deficit on growth indices of mung bean.

کلیدواژه‌ها [English]

  • Drought stress
  • Growth indices
  • Mung bean
  • Salicylic acid
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