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انتخاب ژنوتیپهای متحمل به شوری گیاه دارویی اسفرزه (Plantago psyllium L) و نوسانهای سطح سدیم، پتاسیم و کلسیم در شرایط In vitro | ||
| تحقیقات ژنتیک و اصلاح گیاهان مرتعی و جنگلی ایران | ||
| مقاله 6، دوره 24، شماره 2 - شماره پیاپی 48، آذر 1395، صفحه 221-231 اصل مقاله (251.01 K) | ||
| نوع مقاله: مقاله علمی - پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrfpbgr.2016.109412 | ||
| نویسندگان | ||
| عباس صفرنژاد* 1؛ مریم شورورزی2؛ مرضیه دلیر2 | ||
| 1دانشیار، عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی | ||
| 2کارشناس ارشد، مدیریت بیوتکنولوژی کشاورزی منطقه شرق و شمالشرق کشور، پژوهشکده بیوتکنولوژی کشاورزی ایران، سازمان تحقیقات، آموزش و ترویج کشاورزی، مشهد | ||
| چکیده | ||
| گیاه اسفرزه ازجمله گیاهان مهم دارویی است که در ایران پراکنش وسیعی دارد. هدف از این تحقیق، بررسی میزان تحمل به تنش شوری گونه Plantago psyllium L. با استفاده از کشت بافت بهمنظور شناسایی و تولید ژنوتیپهای مقاوم آن میباشد. آزمایش در قالب طرح کاملا تصادفی با 12 تیمار و 15 تکرار در هر تیمار انجام شد. متوسط درصد جوانهزنی 84% بهدست آمد. ریزنمونههای هیپوکوتیل بیشترین و ریشه کمترین میزان القاء کالوس را در شرایط فاقد تنش شوری (شاهد) نشان دادند.در شرایط تنش شوریدر هر سه ریزنمونه با افزایش غلظت NaCl درصد القاء کالوس بهطورصورت معنیداری کاهش یافت.کالوسهای هیپوکوتیل بیشترین و ریشه کمترین باززایی را داشتند. ریشه کمترین و کوتیلدون بیشترین وزن تر و خشک را در تمامی غلظتهای NaCl داشتند.همچنینافزایش غلظت NaCl موجب افزایش میزان سدیم و کاهش میزان پتاسیم در کالوسها شد. میزان کلسیم با افزایش غلظت NaCl نوسان داشت. کالوسها به محیط باززایی حاوی غلظتهای مختلف NaCl منتقل شدند.نتایج نشان داد هر سه ریزنمونه تا غلظت 50 میلیمول NaCl باززایی داشتند و اختلاف معنیداری بین انواع کالوسها از نظر باززایی وجود داشت. کالوسهای هیپوکوتیل بیشترین و ریشه کمترین باززایی را داشتند ولی در غلظتهای 100 و 150 میلیمول NaCl باززایی اتفاق نیفتاد. در محیط فاقد تنش اختلاف معنیداری وجود نداشت و کالوس ریشه کمترین باززایی را در این شرایط داشت. گیاهچههای باززایی شده برای ریشهزایی به محیط ریشهزایی منتقل و پس از رشد مناسب برای تولید بذر به خاک منتقل شدند. | ||
| کلیدواژهها | ||
| اسفرزه؛ اینویترو؛ کالوس؛ نمک | ||
| عنوان مقاله [English] | ||
| In vitro selection of Plantago psyllium L. for salt tolerance and changes of sodium, calcium and potassium levels at callus stage | ||
| نویسندگان [English] | ||
| A. Safarnejad1؛ M. Shoorvarzi2؛ M. Dalir2 | ||
| 1Associ, Prof., Faculty member of Razavi Khorasan Agricultural and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), Mashhad, I.R. Iran | ||
| 2M.Sc., Department of Tissue Culture Research, Branch of East and North-East Region of Iran, Agricultural Biotechnology Institute, Agricultural Research, Education and Extension Organization (AREEO), Mashhad, I.R. Iran | ||
| چکیده [English] | ||
| Plantago psyllium L. is from "Plantaginaceae" family and one of the most important medicinal plants with wide distribution in Iranian flora. In order to evaluate responses of Plantago psyllium L. to salinity, an experiment was conducted using tissue culture technique as well as somaclonal variation for identification and production of tolerant genotypes. The experiment was performed based on a completely randomized design with 12 treatments and 15 replications on each treatment. Seed germination percentage was 84%. Hypocotyl and root explants showed the highest and the lowest callus induction in non-saline (control) conditions respectively. In the terms of stress condition percentage of callus induction was decreased by increasing NaCl concentration on all of the three explants. Hypocotyl and root callus showed the highest and the lowest percentage of regeneration. Hypocotyl and root explants showed the highest and the lowest dry and fresh weight at all concentrations of NaCl. Also increment of NaCl concentrations led to increment of sodium and decrement of potassium ingredients of the callus. Amount of calcium varied by increasing NaCl concentration. Regenerated plants transferred to MS medium for root initiation. Then the seedlings were transferred to soil to set seed. Generally, in vitro selection is a suitable method for identification and selection of the tolerant genotypes to salinity in Plantago psyllium. | ||
| کلیدواژهها [English] | ||
| Callus, in vitro, NaCl, Plantago psyllium L | ||
| مراجع | ||
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