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تأثیر تنش شوری و تلقیح بذر با کودهای زیستی بر مولفه های جوانه زنی، محتوای سدیم و پتاسیم گیاهچه چاودار (L. Secale cereale) | ||
| علوم و فناوری بذر ایران | ||
| مقاله 10، دوره 8، شماره 2 - شماره پیاپی 16، بهمن 1398، صفحه 127-140 اصل مقاله (950.99 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/ijsst.2018.122005.1204 | ||
| نویسندگان | ||
| لیلا مرادی1؛ رئوف سید شریفی* 2 | ||
| 1دانشکده کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی | ||
| 2اردبیل دانشگاه محقق اردبیلی دانشکده کشاورزی و منابع طبیعی گروه زراعت و اصلاح نباتات | ||
| چکیده | ||
| به‌منظور بررسی تاثیر باکتریهای محرک رشد و تنش شوری بر مؤلفههای جوانهزنی و محتوای سدیم و پتاسیم چاودار، دو آزمایش به صورت فاکتوریل در قالب طرح کاملا تصادفی و بلوک های کامل تصادفی در آزمایشگاه و گلخانهی دانشکده کشاورزی و منابع طبیعی دانشگاه محقق اردبیلی در سال 1395 اجرا شد. فاکتورهای مورد بررسی شامل شوری در چهار سطح (عدم اعمال شوری به عنوان شاهد و شوری 25، 50 و 75 میلی مولار) با نمک NaCl و تلقیح بذر با باکتریهای محرک رشد در چهار سطح (عدم تلقیح بذر به عنوان شاهد، تلقیح بذر با سودموناس، آزوسپریلیوم و کاربرد توام سودموناس و آزوسپریلیوم) بودند. نتایج نشان داد که بیشترین میزان مولفههای جوانهزنی (همچون طول ریشه‌چه، طول ساقه‌چه، وزن خشک ریشه‌چه و ساقه‌چه، درصد و یکنواختی جوانهزنی) در کاربرد توام سودموناس و آزوسپریلیوم و عدم اعمال شوری و کمترین آنها در شوری 75 میلیمولار و عدم تلقیح بذر با باکتریهای محرک رشد بدست آمد. با افزایش شوری خاک، نسبت پتاسیم به سدیم در ریشه و اندام های هوایی کاهش یافت و این حالت در تلقیح بذر با باکتریهای محرک رشدی روند معکوسی داشت. حداکثر نسبت سدیم به پتاسیم در بالاترین سطح شوری و در حالت عدم تلقیح بذر با باکتریهای محرک رشد و کمترین آن در پایین‌ترین سطح شوری و تلقیح بذر با ازوسپریلوم و سودوموناس بدست آمد. به نظر می‌رسد کاربرد باکتری های محرک رشد می‌تواند به عنوان یک روش مناسب برای افزایش نسبت پتاسیم به سدیم، بهبود مولفههای جوانهزنی و رشد گیاهچه چاودار، تحت شرایط شوری باشد. | ||
| کلیدواژه‌ها | ||
| آزوسپریلیوم؛ درصد جوانه زنی؛ کودهای زیستی؛ کلرید سدیم | ||
| عنوان مقاله [English] | ||
| Effects of salinity stress and seed inoculation with bio fertilizers on germination parameters, K and Na content of rye (Secale cereal L.) seedling | ||
| نویسندگان [English] | ||
| lila moradi1؛ raouf seyed sharifi2 | ||
| 1Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil , Iran. | ||
| چکیده [English] | ||
| In order to study the effects of plant growth promoting rhizobacteria (PGPR) and salinity stress on seed germination parameters, K and Na content of rye (Secale cereal L.) seedling , two factorial experiments based on CRD and RCB design were conducted with three replications at laboratory and greenhouse respectively at faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabil in 2016. Experimental factors were included soil salinity in four levels (no-salt as control, salinity 25, 50 and 75 mM as NaCl) and seed inoculation with plant growth promoting rhizobacteria in four levels (no inoculation as control, inoculation with Pseudomonas, Azosprilium, both application of Pseudomonas and Azosprilium). The results showed that maximum germination components (such as ridicule and plumule length, radicule and plumule dry weight, germination percentage, uniformity of germination) were obtained at co-application of Pseudomonas and Azosprilium under non-saline condition and minimum of these parameters were obtained at 75 Mm NaCl and no inoculation. K/Na ratio in root and shoot were decreased with increasing salinity level. It was vise versa in seed inoculation with plant growth promoting rhizobacteria. Maximum ratio of Na/K was obtained at the highest level salinity and no inoculation seed with PGPR and minimum of it was obtained in both inoculation with Pseudomonas and Azosprilium and the least level of salinity. It seems that application of PGPR can be used as a proper method for increasing K /Na ratio, germination components and seedling growth of rye under salinity stress. | ||
| کلیدواژه‌ها [English] | ||
| Azosprilium, Bio fertilizers, Germination percentage, NaCl, Salinity stress | ||
| مراجع | ||
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