ارزیابی برخی صفات مورفو- فیزیولوژیکی چهار رقم ریحان (‏Ocimum basilicum L.‎‏) تحت شرایط ‏تنش کم‌آبی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، دانشگاه لرستان، خرم‌آباد، ایران ‏

2 استادیار، دانشکده کشاورزی، دانشگاه لرستان، خرم‌آباد، ایران ‏

چکیده

پژوهش حاضر به‌منظور ارزیابی برخی صفات مورفولوژیکی و فیزیولوژیکی چهار رقم ریحان تحت شرایط تنش کم‌آبی در شرایط گلخانه‌‌ در سال 1396 انجام گرفت. آزمایش به‌صورت فاکتوریل در قالب طرح پایه کاملاً تصادفی اجرا شد. چهار رقم تجاری ریحان (شامل رقم های سبز ایرانی، بنفش ایرانی، جنوس و آمیتیست) به‌ عنوان فاکتور اول و تنش کم‌آبی در چهار سطح (شامل آبیاری در حد 100، 85، 70 و 55 درصد ظرفیت زراعی) به‌ عنوان فاکتور دوم در نظر گرفته شد. نتایج نشان داد تنش کم‌آبی باعث افزایش طول ریشه و کاهش وزن خشک اندام هوایی در همه رقم ها شد. علاوه بر این، تحت تأثیر تنش کم‌آبی، ارتفاع بوته، سطح برگ، محتوای نسبی آب و میزان تعرق کاهش و میزان شاخص پایداری غشا افزایش نشان داد. با این وجود میزان تغییرات این صفات در رقم های مورد مطالعه متفاوت بود. رقم های جنوس و سبز ایرانی بیشترین میزان وزن تر و وزن خشک را در بین رقم های مورد مطالعه به خود اختصاص دادند، اما در شرایط تنش کم‌آبی رقم جنوس بالاترین میزان وزن خشک ریشه و وزن تر و خشک اندام هوایی را نشان داد. در پایان رقم جنوس به‌عنوان مناسب‌ترین رقم برای کشت در شرایط تنش کم‌آبی معرفی می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of some morpho-physiological traits of four basil ‎‎(Ocimum basilicum L.) cultivars under water stress conditions

نویسندگان [English]

  • Somayeh Karimi 1
  • Bahman Zahedi 2
  • Hassan Mumivand 2
1 Former M. Sc. Student, Faculty of Agriculture, Lorestan University, ‎Khorramabad, Iran ‎
2 Assistant Professor, Faculty of Agriculture, Lorestan University, Khorramabad, Iran ‎
چکیده [English]

The present study was conducted to evaluate some of the morphological and physiological traits of four basil cultivars under drought stress condition in greenhouse. The experiment was conducted as a factorial based on a completely randomized design. Four commercial basil cultivars (including Iranian green and violet basils, Genovese and Amethyst) were used as the first factor and drought stress at four levels (including irrigation at 100, 85, 70 and 55% FC) was used as second factor. The results showed that drought stress increased root length, but decreased dry weight of the plant. Plant height, leaf area, RWC and transpiration were reduced under drought stress treatments. The rate of membrane stability index increased although the reduction was different among the cultivars. Genovese and Iranian green cultivars showed the highest fresh and dry weights. The highest root dry weight and fresh and dry weights of plant were obtained in Genovese cultivar. Finally, Genovese cultivar showed the highest potential to introduce as tolerant cultivar in order to cultivation in drought condition.

کلیدواژه‌ها [English]

  • Basil
  • drought stress
  • morphological traits
  • physiological parameters‎
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