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بررسی روند جوانهزنی بذر مرزه (Satureja hortensis L.)و پیش بینی زوال بذر طی شرایط متفاوت انبارداری | ||
| علوم و فناوری بذر ایران | ||
| مقاله 10، دوره 8، شماره 1 - شماره پیاپی 15، تیر 1398، صفحه 133-143 اصل مقاله (1.06 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22034/ijsst.2019.110942.1101 | ||
| نویسندگان | ||
| سعید امینی1؛ محمد حسن عصاره2؛ عباس ده شیری* 3؛ شهلا هاشمی4 | ||
| 1گروه زراعت و اصلاح نباتات دانشگاه تهران | ||
| 2رئیس موسسه تحقیقات ثبت و گواهی بذر و نهال | ||
| 3موسسه تحقیقات ثبت و گواهی بذر و نهال | ||
| 4کارشناس آزمایشگاه سلامت بذر | ||
| چکیده | ||
| حفظ کیفیت بذر از زمان برداشت تا کشت بعدی هدف اصلی انبارداری بذر میباشد و شرایط محیط انبار، بویژه دو عامل دما و رطوبت از مهمترین عوامل زوال بذر و کاهش بنیه میباشند. بنابراین به منظور بررسی معادله بقای بذر الیس و روبرتز در رابطه با انبارداری بذر مرزه و معرفی ثابتهای معادله حیات بذر، آزمایشی به صورت فاکتوریل در قالب طرح کاملا تصادفی انجام گرفت. پس از تعیین قوه نامیه و رطوبت اولیه بذر، رطوبت آنها به مقدار 5، 7، 9، 11 و 13 درصد رسانیده شد و در بستههای آلومینیومی در دماهای 10، 15، 20 و 25 درجه سانتیگراد قرار گرفتند. نمونهبرداری از بذرها در فواصل زمانی معین، بسته به شرایط نگهداری انجام گرفت و درصد بذر جوانه زده، ضرایب معادله و رابطه سیگما با رطوبت و دما تعیین گردید و پس از تجزیه و تحلیل پروبیت نمودارهای مربوط به هر شرایط رسم گردید. کمترین سطح زوال بذر در دمای 10 درجه سانتیگراد با رطوبت محتوی بذر 5% بود و بیشترین زوال بذر در دماهای 20 و 25 درجه سانتیگراد با رطوبت محتوی بذر 13% بود. مقدار ضرایب حیات KE، CW، CH و CQ بهترتیب 31/4، 83/1 ، 031/0 و 0004/0 بود. نتایج نشان داد که با افزایش رطوبت بذر و دما در طی انبارداری، درصد زندهمانی بذر کاهش مییابد. | ||
| کلیدواژهها | ||
| دما؛ رطوبت؛ زوال بذر؛ طول عمر بذر؛ معادلهی بقای بذر | ||
| عنوان مقاله [English] | ||
| Germination Response and Estimation of Seed Deterioration of (Satureja hortensis) under Various Storage Conditions | ||
| نویسندگان [English] | ||
| saeed amini1؛ Mohammad Hassan assarah2؛ Abbas Dehshiri3؛ Shahla Hashemi Fesharaki4 | ||
| 1the university of Tehran | ||
| 2seed and Plant Certification & Registration Research Institute ,agricultural research, education and extension organization (AREEO), Karaj, Iran | ||
| 3Seed and Plant Certification & Registration Research Institute ,agricultural research, education and extension organization (AREEO), Karaj, Iran, | ||
| 4Seed and Plant Certification & Registration Research Institute ,agricultural research, education and extension organization (AREEO), Karaj, Iran, | ||
| چکیده [English] | ||
| The main goal of seed storage is to maintain its quality from harvesting to sowing time. Among all factors, storage temperature and seed moisture content are the most important factors affecting seed longevity. This experiment was conducted at University of Tehran, Department of Agronomy and Plant Breeding during 1394 to determine the Ellis and Roberts deterioration model of Satureja hortensis seeds and introduce constants of viability equation. Seed viability and initial moisture content was measured and after that seeds were adjusted to 5, 7, 9, 11 and 13% moisture content and sealed hermetically in Nano packets. Storage temperatures were 10, 15, 20 and 25˚C. The interval of sampling depended on the storage conditions. Seed viability constants were estimated to predict seed longevity in this species and relationship between sigma and moisture content and temperatures was determined. After probit analysis, survival curves were depicted in each condition. Results showed that seeds with 5% moisture content stored at 10°C had the highest germination percentage, but seeds which were stored at 13% moisture content and 20 and 25°C had the highest deterioration rate. Estimates of KE, CW, CH and CQ were 4.31, 1.83, 0.031 and 0.0004, respectively. Also, the results showed that seed longevity decrease with increased seed moisture and temperature. | ||
| کلیدواژهها [English] | ||
| moisture, seed deterioration, seed longevity, seed viability equation, temperature | ||
| مراجع | ||
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