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اثر پرایمینگ بذر و تیمار سرما در بهبود خصوصیات جوانهزنی و بنیهای بذر سه جمعیت گیاه دارویی مرزه سهندی( sahendica Satureja ( | ||
| علوم و فناوری بذر ایران | ||
| مقاله 2، دوره 4، شماره 1 - شماره پیاپی 7، فروردین 1394، صفحه 15-26 اصل مقاله (628.79 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| زهرا امینی1؛ محمدعلی علیزاده* 2؛ محسن نصیری3 | ||
| 1دانش آموخته کارشناسی ارشد دانشگاه محقق اردبیلی | ||
| 2دانشیارگروه بانک ژن منابع طبیعی، موسسه تحقیقات جنگلها و مراتع کشور | ||
| 3مربی پژوهشی، گروه بانک ژن منابع طبیعی، موسسه تحقیقات جنگلها و مراتع کشور | ||
| چکیده | ||
| به منظور بررسی تاثیر پرایمینگ اسید جیبرلیک ، نیترات پتاسیم و تیمار سرما، بر ویژگیهای جوانه زنی و رشـد گیاهچـه های بذور سه جمعیت گیاه دارویی مرزه سهندی sahendica Satureja ،آزمایشی در قالب طرح آماری فاکتوریل بـا دو سطح جمعیتها ( مجاریشن، زنینجاب و اسـکو) سـطح )A ( و تیمارهـا شـامل جیبرلیـک اسـید ( 500 ، 250 ppm ( نیتـرات پتاسیم ( 1 ، %2 ( %و سرما (4 درجه سانتی گراد) سطح (B ،(بهطور جداگانه دردو شرایط آزمایشگاه و گلخانه در بانـک ژ ن موسسه جنگلها و مراتع ایران در سال 91 - 1390 انجام گرفت. پس از رشـد گیاهچـه هـا صـفاتی از قبیـل درصـد جوانـه زنـی ، سرعتجوانهزنی ، بنیهیبذر ، طولریشهچه ، طولساقهچه ، طولگیاهچه ، وزنتر و خشـک گیـاه چـه هـا ، نسـبت ریشـه بـه بـه ساقهچه و نسبت وزن تر و خشک گیاهچهدر شرایط آزمایشگاه ، اندازهگیری شدند. همچنین در شرایط گلخانه، صفاتی نظیـر درصد و سرعت سبزشدن،طول ربشهچه وساقهچه و نسبت آنها ، طول گیاهچه، وزنتر و خشک گیـاه چـه و نسـبت آنهـا انـدازه گیریشد. نتایج تجزیه واریانس نشان داد که مقایسهی بین تیمارها و جمعیتها و اثـر متقابـل جمعیـت هـا بـا تیمارهـا در اکثـر صفات دردو شرایط آزمایش( بجز بین جمعیتها و تیمارهـا بـرای درصـد سبزشـدن و طـول سـاقه چـه در شـرایط گلخانـه) در سطح 5 %معنیدار بود. مقایسـه میـانگین جمعیـت هـا نشـان داد کـه جمعیـت مجاریشـن از اسـتان آذربایجـان شـرقی در شـ رایط آزمایشگاه، در صفات بنیه ای نظیر درصد جوانه زنی (97 (%و سرعت جوانه زنـی ( 15 عـدد جوانـه درروز) شـاخص بتیـه ( 41 ( بیشتر از سایر جمعیت ها بود. در صورتی که در شراط گلخانه درصد و سرعت سبز شدن جمعت اسکو بـه ترتیـب 17 %و یـک عدد جوانه در روز بیشتر از دو جمعیت دیگر بود. اثر تیمارها بر جمعیتهـا نشـان داد کـه پرایمینـگ بـذر بـا تیمارهـای اسـید جیبرلیک در صفات بنیهای نظیـر درصـد و سـرعت جوانـه زنی ،درصـد سـبز شـدن و شـاخص بنیـه در دو شـرایط آزمـایش از تییمارهای دیگر موثرتربود. | ||
| کلیدواژه‌ها | ||
| توان بذر؛ ویژگیهای بذر و گیاهچه؛ اسید جیبرلیک؛ نیترات پتاسیم | ||
| عنوان مقاله [English] | ||
| Effect of seed priming and cold treatment to improve seed germination characteristics and vigor of three population of Sahandi medicinal herb of savory (Satureja sahendica | ||
| چکیده [English] | ||
| In order to evaluate the priming effects of gibberllic acid and potassium nitrate on germination and seedling growth characteristics of three populations Satureja sahendica،, an experiment was conducted. The treatments including plant populations (Majarition, Zeninjab and Osko), gibberllic acid (500, 250 ppm) and potasium nitrate (1%, 2%) and cold treatment in three replications arranged in factorial was carried out in greenhouse and laboratory conditions in Natural Gene Bank Group of Research Institute of Rangeland and Forestry in 2011- 2012. After seedling growth, traits including: percentage and speed of germination, root and shoot length , ratio of root length by shoot length, vigor index, normal seedlings, seedling length, fresh and dry weight and ratio of dry weight to fresh weight were measured in laboratory condition. Also in greenhouse, traits including: percentage and speed of emergence, root and shoot length , ratio of root length by shoot length, normal seedlings, seedling length, fresh and dry weight and ratio of dry weight to fresh weight were measured. Analysis of variance showed that there were significanc differences between populations, treatments and interaction of populations with treatments( 5% ) for all traits in both experimental conditions except for seed emergence percentage and shoot length in greenhouse condition. Comparing seed germination characteristics of three population showed that population of Mjarishen selected from East Azarbijan had higher vigor characteristics like seed germination (97%), speed of germination (15 sprout/day) and vigor index(41) than other populations in laboratory condition. In greenhouse condition, percentage and speed of emergence of Osko population as 17% and 1 sprout/day, respectively, were higher than other two populations. Effect of treatment on the populations showed that priming of the seeds with gibberllic acid were more effective for vigor traits like(germination speed, emergence speed and vigor index) than the other treatments in both experimental conditions. | ||
| کلیدواژه‌ها [English] | ||
| Gibberllic Acid, Potasium nitrate, Seed performance, Seed and seedling characteristics | ||
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