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اثر پرایمینگ با اسیدجیبرلیک بر بهبود جوانه‌زنی بذور حاصل از خودگشنی ارقام مختلف گل اطلسی (Petunia hybrida) | ||
| علوم و فناوری بذر ایران | ||
| مقاله 1، دوره 14، شماره 1 - شماره پیاپی 38، فروردین 1404، صفحه 1-16 اصل مقاله (827.15 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2024.364475.1510 | ||
| نویسندگان | ||
| لیلا چهل تنان1؛ علی تهرانی فر* 2؛ محمود شور3؛ سید حسین نعمتی3؛ سعید خسروی3 | ||
| 1علوم باغبانی و مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران. | ||
| 2گروه علوم باغبانی و مهندسی فضای سبز دانشکده کشاورزی، دانشگاه فردوسی مشهد.مشهد، ایران. | ||
| 3گروه علوم باغبانی و مهندسی فضای سبز دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران. | ||
| چکیده | ||
| خودگشنی سبب بروز پدیده‌ای به نام پسروی خویش‌آمیزی در گیاهان دگرگشن شده که همین امر سبب کاهش قدرت جوانه‌زنی بذر و رشد گیاهچه می‌شود، از طرفی پرایمینگ بذر با هورمون‌های گیاهی نظیر اسید جیبرلیک تکنیکی است که به طور بالقوه سبب بهبود جوانه‌زنی و رشد بعدی گیاه می‌شود. بنابراین هدف از این پژوهش بررسی تاثیر غلظت‌های مختلف اسید جیبرلیک بر بهبود جوانه‌زنی بذور، که از خودگشنی ارقام مختلف گل اطلسی بدست آمده‌اند، به‌صورت فاکتوریل و در قالب طرح کاملا تصادفی با سه تکرار بود. تیمارها شامل چهار سطح اسید جیبرلیک (صفر، 50، 100 و 150 میلی‌گرم در لیتر) و بذور حاصل از خودگشنی اطلسی ایرانی، Tango Blue، Tritunia Pink Morn و Tritunia White بود. نتایج نشان داد پرایمینگ بذور با اسید جیبرلیک به‌خصوص در غلظت 100 میلی‌گرم در لیتر با افزایش 6/56 و 1/57 درصدی فعالیت آنزیم‌‌های آلفا و بتا آمیلاز سبب افزایش 8/54 درصدی محتوای قندهای محلول شد و با تامین انرژی سبب افزایش درصد جوانه‌زنی، سرعت جوانه‌زنی، متوسط زمان لازم برای جوانه‌زنی، شاخص بنیه گیاهچه، انرژی جوانه‌زنی و وزن تر و خشک ساقه‌چه و ریشه‌چه شد. همچنین در بین ارقام مختلف، بذور حاصل از خودگشنی اطلسی ایرانی با بیشترین درصد جوانه‌زنی و سرعت جوانه‌زنی توانایی بیشتری نسبت به بذور سایر ارقام در حفظ قوه نامیه، درصد و سرعت جوانه‌زنی داشت. | ||
| کلیدواژه‌ها | ||
| آلفا آمیلاز؛ بتاآمیلاز؛ درصد جوانه‌زنی؛ محتوای قندهای محلول | ||
| عنوان مقاله [English] | ||
| The effect of priming with gibberellic acid on improving the germination of seeds obtained from self-pollinated of different varieties of Petunia hybrida | ||
| نویسندگان [English] | ||
| Leyla Cheheltanan1؛ Ali Tehranifar2؛ Mahmoud Shoor3؛ Seyyed Hossein Neamati3؛ Saeed Khosravi3 | ||
| 1Department of Horticultural Science and Landscape, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| 2Department of Horticultural Science and landscape, Faculty of Agriculture, Ferdowsi University of Mashhad,, Mashhad, Iran. | ||
| 3Department of Horticultural Science and Llandscape, Faculty of Agriculture,, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
| چکیده [English] | ||
| Self-pollination induces a phenomenon known as inbreeding depression in heterozygous plants, which in turn leads to a reduction in seed germination and seedling growth. On the other hand, seed priming with plant hormones such as gibberellic acid is a technical approach that potentially results in the improves of rapid and continuous seed germination and subsequent plant growth. Therefore, this research aimed to investigate the effect of different concentrations of gibberellic acid on the improvement of seed germination resulting from self-pollination in various varieties of Petunia hybrida in a factorial experiment with three replications as a completely randomized design. The treatments consisted of four levels of gibberellic acid (0, 50, 100, and 150 mg/L) and seeds obtained from self-pollination of Iranian Petunia, Tango Blue, Tritunia Pink Morn, and Tritunia White. The results indicated that seed priming with gibberellic acid, especially at a concentration of 100 mg/L, led to a significant increase in the activity of α-amylase and β-amylase by 6.56% and 1.57%, respectively. This increase resulted in 8.54% rise in soluble sugars content, providing energy that significantly enhanced germination percentage, germination speed, average time required for germination, seed vigor index, germination energy, and the fresh and dry weight of plumule and radicle. Moreover, among different varieties, seeds obtained from self-pollination of Iranian petunia demonstrated a higher germination percentage and germination speed compared to seeds from other varieties, indicating a superior capability in maintaining vigor potential, germination percentage, and germination speed. | ||
| کلیدواژه‌ها [English] | ||
| α-amylase, β-amylase, germination percentage, soluble sugars content | ||
| مراجع | ||
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