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Open Access Article
1 - اثر سربرداری بر ویژگی‌های جعفری آفریقایی (Tagetes erecta) تحت تیمار اسیدجیبرلیک
مژگان شهدنژاد محمدعلی بهمنیار وحید اکبرپور فهیمه صالحی علی صالحی ساردویی -
Open Access Article
2 - Effect of gibberellic acid and kinetin on some morphological features in two lentil cultivars under salinity stress
Fariba ShohaniObjective: An experiment was conducted to study the effect of two plant growth regulators (gibberellic acid and quinine) on seed germination and initial seedling growth and salinity tolerance in both Kimia and Shirvan local cultivars.Materials and Methods: This experime MoreObjective: An experiment was conducted to study the effect of two plant growth regulators (gibberellic acid and quinine) on seed germination and initial seedling growth and salinity tolerance in both Kimia and Shirvan local cultivars.Materials and Methods: This experiment was performed as a factorial experiment with a completely randomized design. Two separate experiments were performed to investigate the response of different lentil genotypes to salinity stress applied with salt (Nacl) under different treatments of gibberellic acid (GA3) and kinetin growth regulators. In each of these experiments, 32 treatments were performed in three replications. The first experiment was performed as a factorial experiment in a completely randomized design with three factors: genotype (local and chemical), salinity (0,60, 120 and180 mmol) and gibberellic acid (0,2, 4 and 6 mg/l) The second experiment was performed in the same way with three factors: genotype (local and chemical), salinity (0,60, 120 and 180 mmol) and kinetin (0,2, 4 and 6 mg/l)Findings: The results of the study of the main and interaction effects of genotype, salinity and growth regulator of gibberellic acid on the evaluated traits of lentil showed that the alchemy genotype had the highest mean in the study of traits (dry weight, root to shoot, root length). What is the total seedling length and germination percentage and the best genotype in terms of maximum mean in the study of traits (relative water content, tissue water content, stem length, number of roots and germination percentage) It was related to Ilam genotype.Conclusion: Statistical analysis of the studied traits at germination and seedling growth stage showed that salinity reduced the rate of germination and seedling growth in both cultivars. The results showed that the inhibitory effects of salt on seedling growth of Shirvan local cultivar were significantly higher than Kimia cultivar, which in fact indicates the similarity of salinity tolerance at germination and full plant stages in these two cultivars.Gibberellic acid increased germination rate in both cultivars, but Kimia genotype had the highest mean in the study of traits (root length, total seedling length, root-to-stem ratio). However, Shirvan local genotype had the highest mean in the study of traits such as (relative water content, tissue water content, stem length, number of roots). The trend of reduced root and stem growth in comparison with the control due to gibberellic acid treatment showed that the local cultivar was more sensitive to this growth regulator. Significant interaction was observed between different levels of salinity and gibberellic acid, meaning that the growth response of seedlings was different under the combined effects of salinity and gibberellicacid. Manuscript profile -
Open Access Article
3 - Competitive Effects of Lambsquarters (Chenopodium album) on Growth Parameters, Seed Yield and Essential Oil of Fennel (Foeniculum vulgare)
بهرام MirshekarTo evaluate competition between lambsquarters (Chenopodium album) and fennel (Foeniculum vulgare) on some traits effective on growth and yield a factorial experiment was conducted during 2010-2011 in Agricultural Research Station of Islamic Azad University, Tabriz Branc MoreTo evaluate competition between lambsquarters (Chenopodium album) and fennel (Foeniculum vulgare) on some traits effective on growth and yield a factorial experiment was conducted during 2010-2011 in Agricultural Research Station of Islamic Azad University, Tabriz Branch, Iran, based on randomized complete blocks design with 3 replications. Treatments were weed density (0, 2, 4, 6 and 8 plants per meter row) and its relative emergence times (simultaneously, 10, 20 and 30 days after crop emergence). Dormancy in lambsquarters seeds was broken using gibberlic acid. Essential oil of seeds was extracted by celevenger type apparatus. Results indicated that emergence of 4 weed plants per meter row had no significant effect on fennel growth period. When weed density increased more than 4 plants per meter row, leaf chlorophyle content index increased 26%. Effect of higher weed densities on the time of leaf senescence appearance and plant height was more than lower weed densities. Reduction of weed density and delaying its time of relative emergence decreased weed biomass. While, seed and essence yield increased, significantly. In those weed densities higher than 4 plants per meter row essence yield reduced 25 mL ha-1 per weed. It seems that the weed control in fennel field is necessary. Manuscript profile -
Open Access Article
4 - بررسی روش‌های مختلف شکستن خواب بذر شاهتره (Fumaria parviflora Lam.)
مریم فرخی سید محسن نبوی کلات راحله رهباریان -
Open Access Article
5 - تاثیر برخی تیمارهای پرایمینگ بر جوانه زنی پنیرباد (Withania coagulans)
کیانوش توانا زهرا موحدی مجید رستمی -
Open Access Article
6 - بررسی روش های مختلف شکست خواب بذر شاهتره (Fumaria parviflora Lam)
سید محسن نبوی کلات مریم فرخی راحله رهباریان -
Open Access Article
7 - اثر تیمارهای مختلف شکست خواب و تحریک جوانه‌زنی بذرگونه زرشک معمولی (Berberis vulgaris L. )
سهیل حسین زاده جلال محمودی بهرام ناصری -
Open Access Article
8 - Investigation of Gibberellin and harvesting time effect on germination of four important species Amaranthus L. weeds
محمد Alazmani مه‌لقا GhorbanliAmaranthus species is one of the most important plant species in Golestan Province which mainly are found in arable lands with spectrum of loam to clay, good permeability with highly nutrients. Four species of A. viridis, A. albus L., A. hybridus. L. and A. retroflexus MoreAmaranthus species is one of the most important plant species in Golestan Province which mainly are found in arable lands with spectrum of loam to clay, good permeability with highly nutrients. Four species of A. viridis, A. albus L., A. hybridus. L. and A. retroflexus are grouped as seeds with wide extension in different farmlands of Gospel, Soybean, Maize, watermelon, Melon and tomato, also in gardens, margins of barriers and barren are grown. This experiment had been carried out with applying harvested seeds in summer (July) and autumn (November) from mentioned species treated with temperature of 25±1ºC and 24 hours darkness and treatment with distilled water and 1000 ppm Gibberellin. Rate germination occurred in summer seeds of A. viridis with distilled water and the most germination also in this species caused at Gibberellin treatment. The lowest germination by percentage was observed in A. viridis autumn seeds and the most was observed at A. retroflexus with Gibberellin treatment. The highest influence of Gibberellin treatment 1000 ppm in summer seeds by of A. viridis with 46.7% and autumn seeds with 68.5% increase was observed. Generally A. viridis had better response to Gibberellin treatment and time prolonged of seed harvest, but these treatments has not any positive influence on increased germination. Manuscript profile -
Open Access Article
9 - اثر تیمارهای مختلف فیزیکو شیمیایی بر جوانه‌زنی بذر گیاه دارویی Datura innoxia Mill.
فرنوش فتاحی عبدالعلی شجاعیان حسین عسکری حسنعلی نقدی‌بادی مسعود میرمعصومی -
Open Access Article
10 - بررسی روش‌های مختلف شکستن خواب بذر شاهتره (Fumaria parviflora Lam.)
مریم فرخی سید محسن نبوی کلات راحله رهباریان -
Open Access Article
11 - تاثیر برخی تیمارهای پرایمینگ بر جوانه زنی پنیرباد (Withania coagulans)
کیانوش توانا زهرا موحدی مجید رستمی -
Open Access Article
12 - اثر تیمارهای مختلف شکست خواب و تحریک جوانه‌زنی بذرگونه زرشک معمولی (Berberis vulgaris L. )
سهیل حسین زاده جلال محمودی بهرام ناصری -
Open Access Article
13 - اثر اسید جیبرلیک واسید سالیسیلیک بر متابولیت های ثانویه موجود در برگ گیاه زردچوبه (Curcuma longa L)
مریم وکیل زاده انارکی فروغ مرتضایی نژاد فریبا خلیلی محمد مهدی قیصری مهتاب اصفهانی زاده حسین پورمقدمه و هدف: زردچوبه با نام علمی (Curcuma longa L.)از خانواده زنجبیل(Zingiberaceae)، گیاهی چندساله، دارویی و دارای ریزوم میباشد. این گیاه دارای خواص دارویی بسیار زیادی از جمله خاصیت ضد­سرطان، ضد­باکتری و ضد­هپاتیت است. در این تحقیق اثر غوطه­وری ریز Moreمقدمه و هدف: زردچوبه با نام علمی (Curcuma longa L.)از خانواده زنجبیل(Zingiberaceae)، گیاهی چندساله، دارویی و دارای ریزوم میباشد. این گیاه دارای خواص دارویی بسیار زیادی از جمله خاصیت ضد­سرطان، ضد­باکتری و ضد­هپاتیت است. در این تحقیق اثر غوطه­وری ریزوم­های زردچوبه در اسید­جیبرلیک و اسید­سالیسیلیک بر متابولیت های ثانویه موجود در برگ این گیاه مورد بررسی قرار گرفت. روش تحقیق: به منظور بررسی اثر اسید­جیبرلیک و اسید­سالیسیلیک بر برگ گیاه زردچوبه، ریزوم­های تایلندی این گیاه که به مدت دو سال در شرایط گلخانه دانشگاه آزاد اسلامی واحد خوراسگان (اصفهان) رشد داده شده بودند قبل از کشت در غلظت ppm ­150اسید جیبرلیک به مدت چهار ساعت و غلظت ppm ­400اسید سالیسیلیک به مدت یک ساعت غوطه­ور گردید. آزمایش در شرایط گلخانه­ای بصورت فاکتوریل در قالب بلوک­­های کامل تصادفی با سه تکرار اجرا گردید. بعد از کامل شدن طول دوره رشد، برگ تیمارها توسط دستگاه سوکسله با حلال پترولیوم اتر عصاره گیری شد و در نهایت شناسایی ترکیبات موجود در برگ این گیاه با استفاده از دستگاه GC/MS صورت گرفت. نتایج و بحث: بیشترین متابولیت­های موجود در برگ شامل کامفور، پینن، بتا-اسیمن و 8 -1سینئول می باشد. کاربرد اسید جیبرلیک منجر به افزایش کامفور، 8 -1سینئول، کامفن،α-پینن و همچنین ترکیبات ترپنی جدید مانند ویتامینE ، α-توژن و لیمونن در برگ این گیاه گردید. کاربرد اسید سالیسیلیک منجر به افزایش متابولیت هایی همچون کامفور، 8 -1سینئول، کامفن در برگ این گیاه گردید. توصیه کاربردی/ صنعتی: در تولید متابولیک، با توجه به خواص دارویی گیاه زردچوبه، متابولیت­های ثانویه­ای که خواص دارویی گوناگون دارند می تواند توسط تنظیم کننده­های رشد افزایش یابد. از آنجایی که زردچوبه به دلیل داشتن متابولیت های بسیار مهم یکی از گیاهان دارویی بسیار مهم در طب سنتی و مدرن می باشد، کاربرد اسید­جیبرلیک و اسید­سالیسیلیک باعث افزایش متابولیت های ثانویه در این گیاه گردیده است که می تواند نوع هر متابولیت براساس نتایج این تحقیق افزایش یابد. Manuscript profile -
Open Access Article
14 - بررسی اثر جیبرلیک اسید و دمای انبار بر خصوصیات رویشی و زایشی گل مریم (Polianthes tuberosa)
بهزاد ادریسی سحر میرزاییگل مریم با نام علمی Polianthes tuberosa L. ، از تیره Agavaceae، یکی از مهم ترین گل ­های شاخه بریده در مناطق گرمسیری و نیمه گرمسیری جهان و دارای رتبه هفتم تولید در بین گل­ های شاخه بریده ایران می­ باشد. به ­منظور بررسی اثرات شرایط دمای انبار پیاز (8 هفته Moreگل مریم با نام علمی Polianthes tuberosa L. ، از تیره Agavaceae، یکی از مهم ترین گل ­های شاخه بریده در مناطق گرمسیری و نیمه گرمسیری جهان و دارای رتبه هفتم تولید در بین گل­ های شاخه بریده ایران می­ باشد. به ­منظور بررسی اثرات شرایط دمای انبار پیاز (8 هفته 4 درجه سانتیگراد ، 4 هفته 4 درجه سانتیگراد+ 4 هفته دمای 20 درجه سانتیگراد، 8 هفته 12 درجه سانتیگراد، 4 هفته 12 درجه سانتیگراد + 4 هفته دمای 20 درجه سانتیگراد و 8 هفته 20 درجه سانتیگراد) و غلظت­ های مختلف اسیدجیبرلیک (0، 150 و 300 پی ­پی ام)، بر صفات کمی گل ­مریم نوع پرپر (دابل) این تحقیق به صورت طرح فاکتوریل با طرح پایه بلوک­ های کامل تصادفی، باسه تکرار اجرا شد. اثرات تیمارها بر تعداد شاخه، وزن تر و خشک و طول شاخه، طول سنبله، وزن و تعداد پیاز، وزن و قطر گلچه، تعداد روز تا گلدهی، طول دوره جوانه زنی تا گلدهی و عمر پس از برداشت بررسی شد. ارزیابی کمی و کیفی شاخص ­های رشد و گلدهی نشان داد که بیشترین تعداد شاخه مربوط به تیمار دمای 20 درجه سانتیگراد انبار پیاز و حدود 20% بیشتر از دمای 4 درجه سانتیگراد انبار بود. وزن شاخه با اغلب شاخص­ های رشد همبستگی معنی ­دار داشت. مهم ترین اثرات تیمارهای مورد آزمایش بر سرعت رشد بود. دمای انبار فقط بر روی سرعت جوانه­ زنی پیازها تاثیر داشت (P < 0.001) درصورتی که غلظت GA3 هم بر سرعت جوانه زنی (P < 0.05) و هم بر سرعت گلدهی (P < 0.001) موثر بود. با افزایش غلظت GA3 سرعت گلدهی کاهش یافت. در نهایت نتیجه­ گیری شد که بهترین تیمار، انبار پیاز به مدت 4 هفته با دمای 12 درجه سانتیگراد + 4 هفته با دمای 20 درجه سانتیگراد قبل از کاشت می­ باشد و تیمار GA3 تاثیر معنی­ داری بر فاکتورهای رشد گل مریم نشان نداد. Manuscript profile -
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15 - تغییر در رنگدانه و ترکیب رنگ گل با استفاده از تیمار هورمونی و ساکاروز در لاله رقم ’کینگز بلاد‘
یعقوب حجتی محمود شور علی تهرانی فر بهرام عابدیآزمایشی به­منظور بررسی اثر متقابل بین سه گروه از هورمون­های گیاهی و ساکارز برای تغییر ترکیب رنگ گل و متابولیت­های ثانویه گل لاله انجام شد. تغییرات مورفولوژیکی و فیزیولوژیکی گیاهان با استفاده از سه آزمایش جداگانه و توسط تیمار اسید آبسیزیک در غلظت 5 و 10 Moreآزمایشی به­منظور بررسی اثر متقابل بین سه گروه از هورمون­های گیاهی و ساکارز برای تغییر ترکیب رنگ گل و متابولیت­های ثانویه گل لاله انجام شد. تغییرات مورفولوژیکی و فیزیولوژیکی گیاهان با استفاده از سه آزمایش جداگانه و توسط تیمار اسید آبسیزیک در غلظت 5 و 10 میلی­گرم در لیتر، اسید جیبرلیک 300 و 500 میلی گرم در لیتر، اسید جاسمونیک 50 و 100 میکرو مولار و برهمکنش آن­ها با ساکاروز در غلظت 1 و 2 گرم در لیتر مورد ارزیابی قرار گرفت. با بررسی نمودارهای HPLCو طیف­سنجی یوی دتکتور مشخص شد که تولید متابولیت­های ثانویه، فلاونوئید کل و ترکیب رنگدانه­های آنتوسیانین تحت تاثیر تیمارهای هورمونی قرار گرفتند. با وجود اینکه تیمار ساکاروز به تنهایی قادر به تغییرات معنی­دار در ترکیب و مقدار متابولیت­های ثانویه نبود، اما اثرات متقابل آن با تیمار هورمونی، اسید آبسیزیک و اسید جاسمونیک تغییرات معنی­داری در میزان آنتوسیانین­ها و فلاونوئید کل ایجاد کرد. همچنین هر دو هورمون آبسیزیک اسید و جاسمونیک اسید تغییرات قابل­توجهی در افزایش میزان آنتوسیانین­ها و درصد رنگدانه سیانیدین و پلاگونیدین داشتند، اما در طرف دیگر سبب کاهش معنی­دار در پارامترهای رویشی و عمر پس از برداشت گل­ها شد. در تیمار با اسید جیبرلیک 500 میلی­گرم در لیتر بدون ساکاروز افزایش قابل­توجهی در میزان آنتوسیانین، عمر گل بریده و افزایش هر سه گروه آنتوسیانینی مشاهده شد. همچنین نتایج نشان داد بین اسید جیبرلیک و ساکاروز یک برهمکنش منفی در تنظیم تولید آنتوسیانین­ها وجود دارد.‏ Manuscript profile -
Open Access Article
16 - effect of seed priming with gibberellic acid and salicylic acid on seed germination characteristics of turnip in different temperature conditions
masoumeh meshkinfam hesari Majid RahimizadeThis study was conducted to investigate effect of Salicylic acid and Gibberllic acid to the reaction of turnip seed temperature and relative to the pretreatment premier herbal physiology lab in azad university of bojnourd in academic year of 2015-2016 has done. The expe MoreThis study was conducted to investigate effect of Salicylic acid and Gibberllic acid to the reaction of turnip seed temperature and relative to the pretreatment premier herbal physiology lab in azad university of bojnourd in academic year of 2015-2016 has done. The experiment for factorial informat of totally random repeated for 4 times. The hormones growth promoters contains Gibberllic acid in the amount of 0, 250, 500 mg/l for 24 hours and Salicylic acid in the amount of 0, 250, 500 mg/l for 10 hours at different temperatures of 15, 20, 25, 30, 35 Ċ in 12 days germination examined. After reviewing the results can be stated, The use of seed priming increased germination rate and uniformity of emergence in different temperature conditions to 30 ° C was effective and could reduce the time to 50% germination, In general can say to use of Gibberellic acid prime at a concentration of 500 mg/l And Salicylic acid treatment with concentration of 250 mg/l At higher temperatures reduce the effects of thermal stress on Index germination and seedling components And improve the germination. Manuscript profile -
Open Access Article
17 - The effect of mini-tuber size and chemical treatments on breaking seed dormancy of potato (Solanum tuberosum L.)
marjaneh Mansur Reza Zarghami Mehrdad Chaichi Mohsen PourahmadiSeed dormancy is one of the important problems among potato minitubers. It decreases the germination percentage by rotting the tubers. To overcome this problem an experiment was conducted at Agricultural Research Institute of Hamedan in 2012-2013. The experiments were c MoreSeed dormancy is one of the important problems among potato minitubers. It decreases the germination percentage by rotting the tubers. To overcome this problem an experiment was conducted at Agricultural Research Institute of Hamedan in 2012-2013. The experiments were carried out in factorial randomized complete design with two different treatments, the weight of minituber in three levels (1-3 g, 3-5 g and 5-10 g) and chemical treatments in seven levels (no treatment, 150 ppm gibberellic acid in 1 h, 300 ppm gibberellic acid in 1 h, 1% thiourea in 1 h, 0.5% thiourea in 1 h, 45 ml.m-3 carbon disulfide in 24 h, 45 ml.m-3 carbon disulfide in 48 h) with three replications per treatment. The Sante variety was tested for minituber size. After seed dormancy breakage, the days to germination, number of sprouts per minitubers and the sprout diameter were studied and then the mini-tubers were grown in pots. After tuber collection (harvesting), the number of tuber per plant, tuber weight and the total weight of all tubers were measured. We observed the highest stem diameter in 5 – 10 g tubers and the lowest sprout length in 1-3 g tubers. Also, among different breaking seed dormancy treatments, the 45 ml carbon disulfide in 48 h showed the significant increase in sprout length compare to the 45 ml carbon disulfide in 24 h which resulted the highest tuber size and weight. The gibberellic acid (300 ppm) treatment showed the highest number of tubers. The interaction study among treatments showed that, the 45 ml carbon disulfide in 48 h produced tubers with different size and they were high in weight compare to the others. Manuscript profile -
Open Access Article
18 - Assessment of the different treatments effect on seed dormancy break in Ferula gummosa Boiss
Soudabeh Ahooyi Alireza Sohani Darban Mohsen Nabavi KalatFerula gummosa owned umbelliferus of medicinal plants, industrial and pasture is important. One of the major problems in the field of these domestication species is the presence of seed dormancy. Therefore, it seems absolutely necessary to evaluation of break seed dorma MoreFerula gummosa owned umbelliferus of medicinal plants, industrial and pasture is important. One of the major problems in the field of these domestication species is the presence of seed dormancy. Therefore, it seems absolutely necessary to evaluation of break seed dormancy in this plant. Aim of this study is dormancy breaking, germination and evaluating the best treatment for the elimination of Ferula gummosa seed dormancy. For this purpose, an experiment was carried out as factorial in based on completely randomized design with three replications in 1392, that it was conducted in the laboratory of Islamic Azad University of Mashhad. To perform the experiment, Ferula gummosa seed were collected from Binalud Highlands city of Nishabur in August 1391. The experiments included cold stratification at four levels (30, 45, 60 and 70 days) with treatment gibberellic acid at four levels (control, 250 ppm, 500 ppm and 1000 ppm) and also cold stratification at four levels (30, 45, 60 and 70 days) with treatment kno3 at four levels (control, 1%, 2% and 3%). The final assessment of germination, after 3 weeks of maintenance conducted on Germinator. The results of the first experiment showed that cold stratification and gibberellic acid had a significant positive effect on germination of Ferula gummosa and the maximum percentage (67.5 %) and rate of germination (2.45 seed/day) were obtained by treatment of 60 days stratification. The lowest percentage and rate of germination was gained by treatment of 30 days stratification. Application of 250 ppm gibberellic acid had the highest germination rate (1.94 seed/day) among different levels of gibberellic acid. The results of the second experiment illustrated that cold stratification and kno3 caused to improve germination properties and the highest level of kno3 caused to gain the highest percentage (51.66 %) and rate of germination (1.31 seed/day). No-application of kno3 had the lowest amount of these properties (percentage and rate germination were 31.66% and 0.68 seed/day, respectively). Manuscript profile -
Open Access Article
19 - Effect of gibberellic acid on dormancy breaking of Agria potato seed mini-tubers
Mohammad Bager Khorshidi Davood HassanpanahIn order to study the effect of gibberellic acid on potato mini-tubers, Agria cultivar, newly produced mini-tubers from healthy and diseases free seedlings were studied at four seed size groups (18-22, 13-17, 8-12 and less than 8 mm) after treating with 1000 ppm gibbere MoreIn order to study the effect of gibberellic acid on potato mini-tubers, Agria cultivar, newly produced mini-tubers from healthy and diseases free seedlings were studied at four seed size groups (18-22, 13-17, 8-12 and less than 8 mm) after treating with 1000 ppm gibberellic acid in different sampling dates (30, 40, 60, 90 and 110 days after treating with gibberellic acid). Experimental design was completely randomized design based factorial with three replications. Number of days from treating with gibberellic acid to sprouting was considered as dormancy period. Other traits such as number of days to emergence, number of germinated mini-tubers, sprouting percentage and length of buds were measured. Results showed that there were significant differences among gibberellic acid treated and non-treated, different seed size groups, different sampling dates and those interactions for all traits. The earliest sprouting, the most sprouting percentage and the longest sprouts were observed in 18-22 mm seed size group. Therefore it was concluded that gibberellic acid caused decreasing dormancy period of mini-tubers from 90-110 to 40-60 days. Also, the smaller mini-tubers were the late sprouting and had short sprouts. Manuscript profile -
Open Access Article
20 - Effect of Gibberellic acid (GA3) on quality and quantity characteristics of sweet violet (Viola odorata L.) flower
Saeid Davazdahemami Forough Mortazaeinezhad Maryam Parvaresh Marziyeh AllahdadiSweet violet (Viola odorata L.) is a perennial plant belonging to the Violaceae family that is not only known as a medicinal and ornamental plant but also widely used in the cosmetics industry. In order to investigate the effect of different concentrations of gibberelli MoreSweet violet (Viola odorata L.) is a perennial plant belonging to the Violaceae family that is not only known as a medicinal and ornamental plant but also widely used in the cosmetics industry. In order to investigate the effect of different concentrations of gibberellic acid (GA3) on the quantitative and qualitative properties of sweet violet flowers, an experiment was conducted in a randomized complete block design (CRD) with three replications at Islamic Azad University of Khorasgan (Isfahan). Treatments were different levels of gibberellic acid (GA3) with three concentrations of 0 (control), 200 and 400 mg/L. Results showed that the application of gibberellic acid at 400 ppm significantly increased flower number, flower diameter, flowering duration, anthocyanin content, flavonoids, chlorophyll and UV absorptions compared to control treatment. There was no significant difference in terms of anthocyanin, chlorophyll b and carotenoids between the treatment of 200 ppm gibberellic acid and control. Flower diameter, flower number, flowering duration and anthocyanin content of flowers at two concentrations of hormone (200 and 400 ppm) showed similar results. Regarding the medicinal use of sweet violet flowers, it is recommended to use hormonal treatments to increase the number of flowers and secondary metabolites of this plant. Manuscript profile -
Open Access Article
21 - The effect of Gibberellic Acid (GA3) on some morphological qualities of hybrid rice parental line.
Amir Abbas moosavi mirkalaei Mohammad Zaman Noori Mortaza Sam Daliri Haydeh mehraiA factorial experiment based on completely randomized design was carried out to study the effect of Gibberellic acid on morphological qualities of hybrid rice parental lines in spring 2006. The study was done in a three hectares field in Amol. In this investigation, the MoreA factorial experiment based on completely randomized design was carried out to study the effect of Gibberellic acid on morphological qualities of hybrid rice parental lines in spring 2006. The study was done in a three hectares field in Amol. In this investigation, the male sterile line, IR58025A, accompanied by the male sterile line restoring, IR58025B, were planted in the proportion of 6:2 and 8:2. At blossom, flag leaf cut and GA3 hormone spraying with different viscosities were used as treatments. The results of variance analysis showed significant differences among different plots, and the two A and B parents. Comparison of means showed that flag leaf cut had a significant effect on the height of bushes and an important role in seed filling. Also with regards to seed filling, 150gm hormone per hectare was significantly more influential than 60 gm. This result proved the role of higher doses of hormone in seed filling. No differences were observed between planting proportions of 6:2 and 8:2. Manuscript profile -
Open Access Article
22 - Eeffects of gibberlic acid on the flower’s quality and flowering date in tuberose (Polianthes tuberosa L.)
Forough Mortezaie Nejad nematollah EtemadiTuberose (polianthes tuberosa L.) belongs to agavaceae family and is one of the most important cut flowers. Various factors are affecting it’s flower quality and flowering date. Among the most important factors, effects of growth regulators, in particular gibberli MoreTuberose (polianthes tuberosa L.) belongs to agavaceae family and is one of the most important cut flowers. Various factors are affecting it’s flower quality and flowering date. Among the most important factors, effects of growth regulators, in particular gibberlic acid (GA3) is of vital importance. The current research was performed using a completely randomized block design with three replications to evaluate the effects of GA3 on flower quality and flowering date of tuberose. Double variety tuberose bulbs, ranging from 6 to 7 cm in diameter, were considered for this experiment. The gibberlic acid (GA3) solutions tested were 100, 200, 250 and 300 ppm. The bulbs were either soaked before cultivation or soaked and bud sprouts were sprayed with GA3 solutions at two stages of plant development. Although GA3 application had significant effects on most of the assesed characters, but two methods of GA3 application did not show significant diffirances, whereas significat variations were observed between various GA3 concentrations. Comparing the date of flower harvest indicated that the highest number of flowers were picked up in three to four weeks after flowering initiation for both GA3 application procedures. In general, application of 300 ppm GA3 by soaking the bulbs before cultivation increased the numbers of flowering shoots as well as preceded the flowering time, significantly. In conclusion, it is suggested that application of 300 ppm GA3 solution, plantation after soaking bulbs, will provoke flowering time and increase number of flowerig shoots that has advantages for the commercial multiplication of tuberose flower. Manuscript profile
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