اسید جاسمونیک

حرية الوصول المقاله

1 - اثر 24- اپی براسینولید و اسید جاسمونیک بر شاخص‌های رشد و گلدهی سیکلامن (Cyclamen Persicum)
الهام دانائی پیمان انگورج

به منظور بررسی اثر 24- اپی براسینولید و اسید جاسمونیک بر شاخص‌های رشد و گلدهی سیکلامن (Cyclamen Persicum)، آزمایشی بصورت طرح آماری کاملاً تصادفی با 7 تیمار، 3 تکرار و هر تکرار حاوی 3 گلدان، در مجموع 63 گلدان گل سیکلامن در زمستان سال 1400 در گلخانه تجاری در شهرستان کرج ا أکثر

به منظور بررسی اثر 24- اپی براسینولید و اسید جاسمونیک بر شاخص‌های رشد و گلدهی سیکلامن (Cyclamen Persicum)، آزمایشی بصورت طرح آماری کاملاً تصادفی با 7 تیمار، 3 تکرار و هر تکرار حاوی 3 گلدان، در مجموع 63 گلدان گل سیکلامن در زمستان سال 1400 در گلخانه تجاری در شهرستان کرج انجام شد. تیمارها شامل 24- اپی براسینولید و اسید جاسمونیک هر کدام با 3 سطح 5/2، 5 و 10 میکرومولار و تیمار شاهد بود. نمونه‌برداری و ارزیابی صفات حدود چهار هفته پس از آخرین محلول‌پاشی انجام شد. صفات مورد ارزیابی شامل وزن تر و خشک گل، شاخص ثبات غشاء سلول، تعداد گل، محتوای آنتوسیانین گلبرگ، محتوای کلروفیل کل برگ و ماندگاری گل سیکلامن روی بوته بود. نتایج نشان داد که بیشترین تعداد برگ و محتوای کلروفیل کل برگ در تیمار اسید جاسمونیک 5 میکرولیتر بدست آمد. بیشترین وزن تر و خشک گل، شاخص ثبات غشاء سلول، تعداد گل و محتوای آنتوسیانین گلبرگ در تیمار 24-اپی براسینولید 10 میکروگرم بود. همچنین بیشترین و کمترین ماندگاری گل سیکلامن روی بوته با 26/39 و 34/20 روز در تیمار 24-اپی براسینولید 10 میکروگرم و تیمار شاهد بدست آمد. بنابراین با توجه به نتایج تحقیق، محلول‌پاشی24- اپی براسینولید و اسید جاسمونیک برای بهبود شاخص‌های رشد و گلدهی سیکلامن توصیه می‌گردد تفاصيل المقالة

حرية الوصول المقاله

2 - Phytochemical response of hyssop (Hyssopus officinalis L.) to foliar application of jasmonic acid
عبدالله قاسمی پیربلوطی ابوالقاسم گرگیج مهدی رحیم ملک بهزاد حامدی

Background & Aim:Jasmonic acid (JA) is regarded as endogenous regulators that play important roles in regulating stress responses, plant growth and development.Effect of foliar application of JA on the essential oil and oil chemical components of hyssop (Hyssopus of أکثر

Background & Aim:Jasmonic acid (JA) is regarded as endogenous regulators that play important roles in regulating stress responses, plant growth and development.Effect of foliar application of JA on the essential oil and oil chemical components of hyssop (Hyssopus officinalis L.) were investigated. Experimental: This study conducted in a CRD with three replications and in experimental greenhouse, I.A.U., Shahrekord Branch, Iran at 2012. Experimental treatments included (I) water foliar application (control), (II) water + aceton foliar application (as a solvent), (III-V) 50, 100 and 200 JA µL. The essential oils obtained by hydro-distillation were analyzed by Gas Chromatography-Mass Spectrometry. Results & Discussion: The results of GC-MS showed that the major components of the oil were cis-3-pinanone (10-39%), trans-3-pinanone (4-28%) and β-pinene (27-34%). The results of analysis of variance of the experiment showed that different levels of the foliar application of JA do have significant impacts on chemical constitutes in the essential oil.Finally, foliar application of 200 µL JA on some of secondary metabolite production in H. officinalis oil could be partially changed. Recommended applications/industries: Abbreviation: JA: Jasmonic Acid, MJ: Methyl Jasmonate, GC-MS: Gas Chromatography-Mass Spectrometry µL: Micro liter, M: Molar; ANOVA: Analysis of Variance, CRD: Completely Randomized Design. تفاصيل المقالة

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3 - Effect of foliar application of Jasmonic Acid (JA) on essential oil yield and its compositions of Thymus daenensis Celak
محمد اشرافی عبدالله قاسمی پیربلوطی مهدی رحیم ملک بهزاد حامدی

Background & aim: Recent researches have been done on effects of plant growth regulators (PGR) on growth and production of different crops whose results indicate the effectiveness of most of these hormones on qualitative and quantitative growth of herbs. The applica أکثر

Background & aim: Recent researches have been done on effects of plant growth regulators (PGR) on growth and production of different crops whose results indicate the effectiveness of most of these hormones on qualitative and quantitative growth of herbs. The application of regulators and inhibitors of growth on herbs may, in addition to growth, also lead to secondary metabolites stimulation. Jasmonic acid (JA) and its volatile methyl ester (MJ) collectively termed jasmonates, are regarded as endogenous regulators that play important roles in regulating stress responses, plant growth and development. This study was carried out to survey the effect of spraying of jasmonic acid (JA) on T. daenensis Celak in Shahrekord, Southwest Iran at 2010-2011. Experimental: A pot experiment was conducted in a CRD with six treatments and seven replications. The treatments including I: distilled water (control), II: distilled water and solution (acetone), III-VI: JA in various concentrations (50, 100, 200 and 400 µM). The treatments were applied before flowering stage. The aerial parts were characterized by Clevenger approach and Gas Chromatography–Mass Spectrometry. Results & discussion: Results of analysis of variance of the experiment showed that different levels of the foliar application of JA do have significant impacts on chemical constitutes in the essential oil of T. daenensis. Various concentrations of foliar application of JA caused decrease or increase some of secondary metabolites in essential oil. In comparison with other treatments, there is a significant difference between amount of thymol and carvacrol, as two main compounds in essential oil of T. daenensis, having 100 µM JA. The application of acetone solvent with distilled water also caused the increase in some of constitutes of the essential oil. Industrial and practical recommendations: In metabolic cultivation, for producing a special metabolite, the main agronomic and processing management should be regarded in order to increase the rate of essence and metabolites. Finally, some of secondary metabolite production in Thymus daenensis Celak could be partially changed by supplementation of different elicitors such as JA. تفاصيل المقالة

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4 - Effect of jasmonic (JA) and salicylic acid (SA) on phytochemical properties of Salvia officinalis L.
مهدی رحیم ملک شکوفه آزاد مهراب یادگاری عبدالله قاسمی پیربلوطی

Background & aim: Sage (Salvia officinalis L.) is a perennial medicinal herb which belongs to Lamiales order and Lamiaceae family. This plant has economical value for four years. Nowadays the use of plant growth regulators (PGR) has an important role for increasing أکثر

Background & aim: Sage (Salvia officinalis L.) is a perennial medicinal herb which belongs to Lamiales order and Lamiaceae family. This plant has economical value for four years. Nowadays the use of plant growth regulators (PGR) has an important role for increasing the secondary metabolites in plants. Among PGRs Jasmonic (JA) and salicylic acid (SA) have many applications in medicinal plants.Experimental: This study was carried out to survey the effect of spraying of various concentrations JA and SA on S. officinalis L. in field experiment of Hormozgan, South Iran at 2010-2011. A pot experiment was conducted in a CRD with ten treatments with three replicates. The treatments including I: distilled water (control), II: distilled water and solution (acetone), III-VI: SA in different concentrations (1, 10, 20 and 40 mol/l, VII-X: JA in various concentrations including 50, 100, 200 and 400 µM. The leaves were harvested at before flowering and, the essential oil extracted by Clevenger approach then the compounds were characterized using Gas Chromatography–Mass Spectrometry (GC-MS).Results & Discussion: Results showed that various concentrations of foliar application of JA and SA lead to decrease or increasing of some secondary metabolites in essential oil of S. officinalis L. Compounds such as a-pinene, camphene, b-pinene, 1,8-cineole, cis-thujane, trans-thujane, borneol, bornyl acetate and camphor were affected from JA and SA treatments.Industrial and practical recommendations: According to the results of present study it suggests to increase the major compounds of essential oil of Salvia officinalis L.using SA and JA. تفاصيل المقالة

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5 - Modification of Flower Color Pigments and Color Composition with Hormonal Treatments and Sucrose in <i>Tulipa gesneriana</i> ‘Kingsblood’
Yaghoub Hojjati Mahmood Shoor Ali Tehranifar Bhram Abedi

Three separate experiments were conducted to investigate the interplay between three phytohormones and sucrose for the change of flower color composition and the plant secondary metabolites in Tulipa. The variations of the physiological and morphological characteristics أکثر

Three separate experiments were conducted to investigate the interplay between three phytohormones and sucrose for the change of flower color composition and the plant secondary metabolites in Tulipa. The variations of the physiological and morphological characteristics, with ABA at 5 and 10 mg/L (as experiment one), GA3 at 300 &lrm;and 500 mg/L &lrm;&lrm;(as experiment two), 50 and 100 µM of JA (as experiment three) and their interactions with sucrose at 1 and 2 g/L were analyzed. By reviewing the HPLC charts and UV-Vis spectra, it was found that the production of plant secondary metabolites, total flavonoids, and anthocyanins composition pigments was influenced by the foliar application of the plant hormones. The sucrose alone had no significant effect on the quantification of different phytochemicals, but the interaction with JA and ABA showed a considerable variation in the anthocyanin accumulation and total flavonoids. Both JA and ABA hormones, in spite of enhanced anthocyanin accumulation and increased cyanidin and pelargonidin pigment percentage, were associated with reduced vegetative growth parameters as well as vase life, compared to the control plants. However, GA3 at 500 mg/L without sucrose played a key role in the accumulation of anthocyanin, postharvest performance, and the increase in the three major anthocyanin pigments. Moreover, the data provided evidence of interference between the sucrose and GA3 in the regulation of the anthocyanin accumulation. تفاصيل المقالة

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