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اثر جیبرلین، دما و طول دوره نگهداری بذر گونه‌های مختلف پونه‌سا برخصوصیات جوانه‌زنی | ||
| علوم و فناوری بذر ایران | ||
| مقاله 5، دوره 13، شماره 3 - شماره پیاپی 35، مهر 1403، صفحه 71-85 اصل مقاله (883.4 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijsst.2023.362310.1484 | ||
| نویسندگان | ||
| پروین صالحی شانجانی* 1؛ حمیده جوادی2؛ لیلا رسول زاده1؛ لیلا فلاح حسینی1 | ||
| 1بانک ژن منابع طبیعی ایران | ||
| 2عضو هیات علمی بانک ژن منابع طبیعی ایران | ||
| چکیده | ||
| بسیاری از کشاورزان بذور برداشتی را در فصل کشت بعدی استفاده می‌نمایند. آگاهی از بهترین شرایط ذخیره می‌تواند از زوال بذر در انبار ممانعت نموده و از اتلاف سرمایه جلوگیری نماید. در این پژوهش تأثیرات دمای انبار و طول دوره نگهداری بر ویژگی‌های جوانه‌زنی بذر پونه‌سا (Nepeta haussknechtii، N. pogonosperma و N. glomerulosa subsp. Staffina) مطالعه شد. آزمایشی به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار انجام شد که تیمارهای آزمایش شامل مدت زمان نگهداری در پنج سطح 0، 1، 2، 3 و 4 ماه و تیمار دمای نگهداری در سه سطح دمای اتاق، سردخانه های 4+ و 18- درجه سانتی‌گراد، و تیمار جوانه‌زنی بذر در دو سطح شاهد و کاربرد جیبرلین 250 پی‌پی‌ام بود. نتایج نشان داد تفاوت قابل ملاحظه ای در خصوصیات جوانه‌زنی بذرهای سه گونه پونه‌سا وجود دارد. بهطوری‌که گونه N. glomerulosa با 29 درصد، جوانه‌زنی پایینی نسبت به دو گونه N. haussknechtii و N. pogonosperma، با جوانه‌زنی 73 و 89 درصد نشان داد. نگهداری به‌مدت 3 تا 4 ماه میزان جوانه‌زنی بذور گونه N. glomerulosa را به میزان 53 درصد و گونه‌های N. haussknechtii و N. pogonosperma را به ترتیب به میزان 19 و 10 درصد افزایش داد. مطالعه نگهداری بذور در 25+، 4+ و 18- درجه سانتی‌گراد نشان داد بهترین دما برای نگهداری کوتاه مدت سه تا چهار ماهه، تا فصل کشت فصل بعدی، در گونه N. glomerulosa subsp. Staffina ، دمای 4+ درجه سانتی‌گراد و در گونه‌های N. haussknechtii و N. pogonosperma، دمای 18- درجه سانتی‌گراد است. | ||
| کلیدواژه‌ها | ||
| تنوع گونه‌ای؛ سرعت جوانه‌زنی؛ جیبرلین | ||
| عنوان مقاله [English] | ||
| The effect of gibberellin, temperature, and length of the seed storage period of different species of Nepeta on germination characteristics | ||
| نویسندگان [English] | ||
| parvin salehi1؛ h j2؛ L R1؛ L F1 | ||
| 1NRGB | ||
| 2NRGB | ||
| چکیده [English] | ||
| In this study, the effect of short-term storage conditions in one season on the characteristics of seed germination of 3 species of Nepeta was studied. A factorial experiment was conducted. Treatments included 1) Storage period (in five levels 0, 1, 2, 3 and 4 months), 2) storage temperature (at three levels of the laboratory environment, cold storage +4 and -18 °C), and 3) germination treatment (at two levels of control and gibberellin 250 ppm). The results showed that the germination characteristics of different species are different at the time of harvest, So that at the time of harvesting, N. glomerulosa with 29% showed lower germination compared to two species, N. haussknechtii and N. pogonosperma, with 87 and 89% germination. Storage for 3 to 4 months increased the germination percentage of N. glomerulosa about 53% and N. haussknechtii and N. pogonosperma about 10%. It can be concluded that N. glomerulosa has primary dormancy, and by keeping it for four months, the post-harvesting demands of this species are released. While the species N. haussknechtii and N. pogonosperma did not have primary dormancy. The study of seed storage at +25, +4 and -18 °C showed that the best temperature for short-term seed storage, until the next cropping season, for N. glomerulosa subsp. Staffina is temperature +4 °C and for N. haussknechtii and N. pogonosperma is -18 °C. The germination behavior of N. haussknechtii and N. pogonosperma are very similar and is completely different from N. glomerulosa subsp. Staffina. | ||
| کلیدواژه‌ها [English] | ||
| Species diversity, Germination rate, Gibberellin hormone | ||
| مراجع | ||
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