determination of seed viability constants in medicinal pumpkin (cucurbita pepo l. subsp. pepo. convar. pepo var. styriaca greb), borago (borago officinalis l.) and black cumin (nigella sativa l.)
نویسندگان
چکیده
predicting seed viability would be extremely beneficial to seed producers and the prediction of seed viability depends on understanding the quantitative relationships between seed longevity, seed moisture content and storage temperature. thus, the objective of this investigation was to quantify relationship between temperatures, seed moisture and seed deterioration and determination seed viability constants in medicinal pumpkin, borago and black cumin. five storage temperatures (30, 35, 40, 45 and 50 oc) and four moisture content levels (5, 8, 11 and 14%) were used. seed viability equation is v = ki-p/10 ke - cwlog10m - cht - cqt2. the ki is the initial seed quality constant, p is the storage period (days), m is moisture content (%, fresh weight basis), t is temperature (oc) and ke, cw, ch and cq are constants. the results showed that ke was 3.4018, 6.7485 and 4.9701 for medicinal pumpkin, borago and black cumin, respectively. the value of cw was 3.2148, 2.4195 and 1.2528 for three species, respectively. the value of ch for medicinal pumpkin, borago and black cumin was 0.131, 0.0665 and 0.0516, respectively and cq for medicinal pumpkin, borago and black cumin was 0.00264, 0.000478 and 0.000478, respectively.
منابع مشابه
evaluation of nonlinear regeression models in quantifying germination rate of medicinal pumpkin (cucurbita pepo l. subsp. pepo. convar. pepo var. styriaca greb), borago (borago officinalis l.) and black cumin (nigella sativa l.) to temperature
selection of an appropriate model is important for quantifying response of germination rate to temperature and determination of cardinal temperatures. this study was done to evaluate different nonlinear regression models to describe response of germination rate to temperature in medicinal pumpkin, borago and black cumin. the regression models were dent-like, segmented, beta, curvilinear, quadra...
متن کاملارزیابی مدلهای رگرسیون غیرخطی در کمّیسازی جوانهزنی کدو تخمکاغذی (Cucurbita pepo L. subsp. Pepo. Convar.Pepo var. styriaca Greb)، براگو (Borago officinalis L.) و سیاهدانه (Nigella sativa L.) به دما
انتخاب مدل مناسب برای کمّیسازی واکنش سرعت جوانهزنی نسبت به دما در تعیین دقیق دماهای کاردینال بسیار پراهمیت است. پژوهش حاضر بهمنظور ارزیابی مدلهای رگرسیونی غیرخطی برای توصیف سرعت جوانهزنی کدو تخمکاغذی، براگو و سیاهدانه نسبت به دما صورت گرفت. برای توصیف جوانهزنی در مقابل دما از مدلهای دندانمانند، دوتکهای، بتا، منحنی، درجه دوم و درجه سوم و برای انتخاب مدل برتر از معیارهای جذر میانگین ...
متن کاملEffect of pruning on growth, development, seed yield and active substances of Pumpkin (Cucurbita pepo convar. pepo var. styriaca)
The objective of this study was to investigate the effect of pruning in different developmental stages on growth, development, seed yield and active substances of medicinal pumpkin (these active substances are uses for remedy the Benign Prostatic Hyperplasia (BPH)). The experiment was performed in a RCB design. Five pruning treatments in different developmental stages (no pruning, after 3-5 nod...
متن کاملEffect of pruning on growth, development, seed yield and active substances of Pumpkin (Cucurbita pepo convar. pepo var. styriaca)
The objective of this study was to investigate the effect of pruning in different developmental stages on growth, development, seed yield and active substances of medicinal pumpkin (these active substances are uses for remedy the Benign Prostatic Hyperplasia (BPH)). The experiment was performed in a RCB design. Five pruning treatments in different developmental stages (no pruning, after 3-5 nod...
متن کاملSelenium species determination in selenium-enriched pumpkin (Cucurbita pepo L.) seeds by HPLC-UV-HG-AFS.
Pumpkins were treated by spraying the leaves in the flowering period with a water solution containing 1.5 mg Se per liter in the form of Na2SeO4. The average total selenium content of seeds was found to be 0.19 microg g(-1) in nontreated pumpkins and 1.1 microg g(-1) in exposed ones. For speciation analysis, enzymatic hydrolysis with different amounts of Protease XIV was carried out. Under opti...
متن کاملتأثیر کودهای زیستی و شیمیایی بر عملکرد و اجزای عملکرد کدوی تخمکاغذی (Cucurbita pepo L. Convar. pepo Var. styriaca)
این تحقیق به منظور بررسی تأثیر کودهای زیستی و شیمیایی بر عملکرد، اجزای عملکرد، میزان کلروفیل و فتوسنتز کدوی تخمکاغذی (Cucurbita pepo L.) بهصورت طرح بلوکهای کامل تصادفی با هشت تیمار و سه تکرار طی سال زراعی 1388 در مزرعه تحقیقاتی دانشکده کشاورزی دانشگاه کردستان انجام شد. تیمارهای کودی شامل شاهد یا بدون مصرف کود (1N)، کود زیستی نیتروکسین (2N)، کود زیستی فسفات بارور 2 (3N)، کودهای زیستی نیتروکسی...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
پژوهش های تولید گیاهیجلد ۱۷، شماره ۳، صفحات ۵۳-۶۶
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023