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لیلا شکاری محمد مجتبی کامل منش مریم مظفریان فرشاد صادقی

چکیده

سلنیوم عنصری سودمند با خواص آنتی اکسیدانی و آنتی ویروسی است که باعث افزایش رشد گیاهان می شود. به منظور بررسی اثر سلنیوم بر رشد رویشی گیاه فلفل تند (Capsicum anuum L.) رقم kenya آزمایشی گلخانه ای در قالب طرح کاملا تصادفی شامل پنج سطح سلنیوم (صفر، 3، 5، 7 و 10 میکرو مولار) با سه تکرار انجام پذیرفت. نتایج نشان داد که افزودن سلنیوم به میزان 5 میکرومولار باعث افزایش معنی دار محتوای نسبی آب بافت برگ گیاه به ترتیب به میزان 8/12 و 8/61 درصد نسبت به تیمار شاهد گردید. همچنین این عنصر در سطوح تیمار 7 و 10 میکرومولار به ترتیب باعث افزایش 61/33 و 06/8 درصدی شاخص پایداری غشاء سلولی نسبت به تیمار شاهد شد. اعمال سلنیوم در سطوح 3 و 5 میکرومولار به ترتیب باعث افزایش 6/24 و 1/25 درصدی شاخص سطح برگ نسبت به تیمار شاهد شد. تحت تاثیر این عنصر تعداد برگ و همچنین محتوای رنگیزه های کلروفیلی افزایش یافت به نحوی که در سطح تیمار 5 میکرومولار میانگین تعداد برگ گیاه 14/15 درصد و اجزای کلروفیل (کلروفیل a،b وکلروفیل کل) نیز به ترتیب به میزان 67/64،5/38 و 8/55 در صد نسبت به تیمار شاهد افزایش نشان داد. به طور کلی نتایج حاصل از این پژوهش نشان داد که عنصر سلنیوم در سطوح پایین (5 میکرومولار) اثرات بهبود دهنده ای بر شاخص های رشدی و فیزیولوژیکی گیاه فلفل دارد. بررسی اثر تیمار سلنیوم بر ظرفیت آنتی اکسیدانی و محتوای این عنصر در بافت میوه فلفل تند درمطالعات آینده پیشنهاد می گردد.

جزئیات مقاله

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ارجاع به مقاله
شکاریل., کامل منشم. م., مظفریانم., & صادقیف. (2015). بررسی اثر سلنیوم بر برخی صفات مورفولوژیکی و فیزیولوژیکی گیاه فلفل تند (Capsicum anuum). نشریه علوم باغبانی, 29(4), 594-600. https://doi.org/10.22067/jhorts4.v29i4.32110
نوع مقاله
علمی - پژوهشی