تأثیر تنش شوری بر برخی بوم‌جور‌های گیاه دارویی دم شیر (Leonurus cardiaca L.)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

2 دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

3 استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

چکیده

با توجه به روند افزایشی توسعۀ اراضی شور و کمبود اراضی زراعی مطلوب و اهمیت گیاه دارویی دم­شیر، معرفی بوم‌جور (اکوتیپ) مقاوم به شوری، اهمیت زیادی دارد. این آزمایش برای بررسی تحمل شوری گیاه دم شیر به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با سه تکرار اجرا شد. سطوح شوری 0 (شاهد)، 4 ، 8 و 12 دسی‌زیمنس بر چهار بوم‌جور طالقان، خوانسار، سراب و کرمان برای اندازه‌گیری وزن خشک اندام‌های هوایی و ریشه، طول ساقه، سطح برگ، طول ریشه، سبزینه (کلروفیل) و کاروتنوئیدها، پرولین، فنل کل و عنصرها اعمال شد. نتایج نشان داد، تفاوت معنی‌داری بین بوم‌جور­ها، سطوح مختلف شوری و اثر متقابل آن‌ها از لحاظ بیشتر صفات وجود دارد. وزن خشک اندام‌های هوایی و سطح برگ با افزایش شوری کاهش یافت. بوم‌جور کرمان در مقایسه با دیگر بوم‌جور‌ها بیشترین میزان وزن خشک ریشه در همۀ تیمارها و وزن خشک اندام‌های هوایی (g43/33) را داشت. در همۀ بوم‌جور­ها با افزایش شوری، میزان سدیم روند افزایشی و میزان پتاسیم و کلسیم روند کاهشی نشان دادند. بوم‌جور­های طالقان و کرمان بیشترین میزان پتاسیم اندام‌های هوایی در همۀ تیمارها را داشتند. بیشترین میزان کلسیم اندام‌های هوایی (mg/g-1 dw 75/7) در بوم‌جور کرمان بود. به‌طورکلی بوم‌جور کرمان برترین بوم‌جور شناخته شد.

کلیدواژه‌ها


عنوان مقاله [English]

Salt stress effect on some ecotypes of motherwort (Leonurus cardiaca L.)

نویسندگان [English]

  • Ahmad Zamani 1
  • Majid Shokrpour 2
  • Vahideh Nazeri 3
1 Former M.Sc. Student, University College of Agriculture & Natural sciences, University of Tehran, Karaj, Iran
2 Associate Professor, University College of Agriculture & Natural sciences, University of Tehran, Karaj, Iran
3 Professor, University College of Agriculture & Natural sciences, University of Tehran, Karaj, Iran
چکیده [English]

Due to decreasing of suitable land for agriculture and increasing of the saline lands and also the importance of Leonurus Cardiaca, Identification of tolerant medicinal plants to salinity is most important. The experiment was run as factorial experiment based on randomized complete block design with three replications. Four salinity levels were applied by irrigation with solutions containing NaCl that made EC of 0 (control), 4, 8 and 12 ds/m treated on four ecotypes of Taleghan, Khansar, Sarab and Kerman to measure dry weight of shoot and root, shoot length, leaf area, root length, chlorophyll, carotenoids, prolin, total phenol and elements. Results showed that effect of population and their salinity and interactioneffects were significant in most of the measured attributes. Dry weight of shoot and leaf area decreased with increasing salinity level. Kerman ecotype had the highest amount of root dry weight than other ecotypes in all treatments, and had a highest amount of shoot dry weight (33.43 g) as well. Amount of sodium increased with increasing salinity levels, while the amount of potassium, and Calcium decreased. In all treatments, Taleghan and Kerman ecotypes had the highest amount of potassium in shoot. The highest level of shoot calcium (7.75 mg/g-1 dw) was in Kerman ecotype. Kerman ecotype was superior in most of traits.

کلیدواژه‌ها [English]

  • Elements
  • Leonurus cardiaca
  • morphological and physiological traits
  • salinity
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