اثر پرایمینگ بر شاخصهای جوانه زنی بذر و رشد گیاه پروانش (Catharanthus roseus L.) در شرایط تنش شوری

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران

2 کارشناس گروه علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران (hajarnemati@um.ac.ir)

10.22124/jms.2023.7673

چکیده

شوری یکی از تنش­های غیر زیستی است که نقش زیادی در ایجاد محدودیت جهت توسعه و پرورش گیاهان در فضای سبز دارد. یکی از حساس­ترین دوران زندگی گیاهان، مرحله جوانه­زنی و استقرار گیاه در خاک است. کاربرد پرایمینگ در بهبود جوانه­زنی گیاهان بسیاری موثر بوده است. پژوهش حاضر با هدف بررسی تاثیر پرایمینگ بر جوانه­زنی بذر گیاه پروانش در شرایط تنش شوری انجام شد. آزمایش به­صورت فاکتوریل در قالب طرح کاملا تصادفی با سه تکرار انجام شد. عوامل آزمایش شامل چهار سطح شوری با استفاده از کلرید سدیم (صفر، 4، 8 و 12 دسی­زیمنس بر متر) و پنج سطح پرایمینگ بذر ( نیترات پتاسیم 100 و 200 میلی­گرم بر لیتر و آسکوربیک اسید 100 و 200 میلی­گرم بر لیتر و آب مقطر) بودند. نتایج نشان داد که شوری کلیه صفات مورد بررسی را کاهش داد، اما پرایمینگ بذر در تمام سطوح شوری برای تعدیل اثر تنش موثر بود. پرایمینگ نیترات پتاسیم از آسکوربیک اسید موثرتر بود. در تیمار بدون تنش شوری نیز با کاربرد پرایمینگ در بعضی از سطوح، مولفه­هایی نظیر طول گیاهچه، وزن­تر و خشک گیاهچه، محتوای آب بافت در مقایسه با سطح شاهد افزایش یافت. با توجه به­نتایج به­دست آمده از این آزمایش، پیشنهاد می­گردد که تحقیقات بیشتری جهت رسیدن به­سطح مناسب کاربرد پرایمینگ نیترات پتاسیم برای جوانه­زنی گیاه پروانش تحت تنش شوری، صورت گیرد.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of priming on seed germination and growth of Madagascar periwnkle under salinity stress

نویسندگان [English]

  • Azadeh Mousavi Bazaz 1
  • Hajar Nemati 2
1 Department of Horticultural Science and Green Space engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
2 Laboratory Expert. Department of Horticultural Science and Green Space engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. hajarnemati@um.ac.ir
چکیده [English]

Salinity is one of the abiotic stresses that has a major role in limiting the development and cultivation of plants in the green space. One of the most sensitive periods in life cycle of plants is the stage of germination and establishment of the plant in the soil. The application of priming has been effective in improving the germination of many plants. The present study was conducted with the aim of investigating the effect of priming on the germination of the periwinkle seeds under salt stress. The experiment was conducted based on a factorial in a completely randomized design with three replications. The factors include four salinity levels using sodium chloride (0, 4, 8 and 12 dS/m) and five priming levels (potassium nitrate 100 and 200 mg/l and ascorbic acid 100 and 200 mg/l and distilled water). The results showed that salinity reduced all investigated traits, but seed priming was effective in modulating the effect of stress at all salinity levels. Potassium nitrate priming was more effective than ascorbic acid. In treatment without salt stress, the application of priming in some levels, parameters such as seedling length, seedling fresh and dry weight, tissue water content increased compared to the control. According to the results obtained from this experiment, it is suggested that more research be done to reach the appropriate level of potassium nitrate priming for germination of periwinkle plant under salinity stress.

کلیدواژه‌ها [English]

  • Ascorbic acid
  • Periwinkle
  • Potassium nitrate
  • Salinity
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