This study was conducted to assay the effects of methanol foliar application (0, 10, 20 and 30% v/v) and bed cover (control, white and black covers) on yield and some physiological traits of marigold as a factorial based on RCBD. The results revealed the significant interaction effects of bed cover and methanol foliar application on chlorophyll a content and plant height. The highest plant height was belonged to black mulch × methanol (except for 30% methanol). The highest chlorophyll a content (2.3 mg g-1 FW) was attained by black mulch × 30% methanol. Chlorophyll b content was influenced by soil cover and the highest chlorophyll b content (1.1 mg g-1 FW) was recorded with black mulch. The flowers and leaves dry weight as well as relative water content and total soluble solids content were affected by the treatments and, the highest data for flower dry weight (116 g) was in 30% foliar spray and black mulch (103.6 g). The highest data for total soluble solids content (120 °Brix) and relative water content (49.7%) were recorded with 30% methanol foliar application and by black soil cover. For root-dry weight (15.3 g) and total phenolics content (95.05 mg GA g-1 Dwt), black mulch was the treatment of choice. پرونده مقاله

Chilling damage under 15ºC in anthurium cut flowers reduces the vase-life, quality and marketability of the product. In the present experiment, GABA postharvest treatment (0, 1 and 5 mM) was studied on the vase-life, total soluble solid (TSS), H2O2 content, proline content, spathe browning, catalase and superoxide dismutase enzymes activity of Anthurium andraeanum 'Sirion' during 10 days of storage at 10 ºC and 5 ºC. The results revealed that 1 mM GABA treatment at 10 ºC was the treatment of choice considering the vase-life. GABA treatment had no special effect on reducing the browning incidence. GABA at 5 mM increased the SOD activity. Furthermore, GABA reduced H2O2 levels compared to control untreated flowers. Moreover, under chilling stress, proline was the highest with GABA treated flowers. One mM treated GABA treatments hold higher catalase activity. The highest TSS belonged to 5 mM GABA under 5ºC. پرونده مقاله

Pelargonium odoratissimum is a perennial evergreen used as a fragrant ornamental plant. Leaves, green branches and fresh flowers contain essential oils, that have been shown to possessantibacterial,antifungal, antiviral,insecticidal andantioxidant properties. In order tostudytheeffect of foliar spray of ZnSO4 (0, 1000, 2000, 3000 and 4000 mg L-1) on vegetative growth and some physiological characteristics of Pelargonium odoratissimum L. plants, a pot experiment was carried out during 2015 at the Research Greenhouse of Azarbaijan Shahid Madani University, Iran. Vegetative growth (plant height, fresh and dry weight) was significantly affected by the application of ZnSO4. Foliar application of ZnSO4 promoted plant height especially at 2000 mg L-1. Chlorophyll a, b, total chlorophyll and carotenoid contents were affected with ZnSO4 treatment as well. The content of essential oil was not significantly influenced with ZnSO4 spray. ZnSO4 application had significant effect on total phenolic and anthocyanins (at 1000 and 2000 mg L-1) and total flavonoids (at 2000 mg L-1) content. پرونده مقاله

به منظور بررسی اثر سطوح مختلف محلول پاشی عصاره جلبک دریایی (صفر، 150 و 300 میلی لیتر) و تیمار تلفیقی کودهای آلی (شاهد، مرغی، دامی و ورمی کمپوست) با خاکپوش (سفید و سیاه) بر برخی شاخص‌های فیزیولوژیک (محتوای کلروفیل، فنل و فلاونوئید کل، آنتوسیانین) و رشدی همیشه بهار آزمایشی به صورت فاکتوریل بر پایه طرح بلوک‌های کامل تصادفی با سه تکرار انجام شد. نتایج نشان دهنده وجود اثرات متقابل معنی دار ترکیب تیماری (خاکپوش و کود آلی) و محلول پاشی بر محتوای کلروفیلa بود. بیشترین محتوای کلروفیل a (01/4 میلی گرم بر گرم وزن تر) مربوط به تیمار ورمی کمپوست و محلول پاشی 300 میلی لیتر بود. بالاترین میزان وزن خشک ریشه (16 گرم بر متر مربع)، ساقه (8/74 گرم بر متر مربع) و قطر گل (98/5 سانتی متر) در ترکیب تیماری ورمی کمپوست + مالچ سفید مشاهده گردید. محتوای فنل کل، وزن خشک گل و اسانس نمونه‌ها تحت تاثیر تیمار تلفیقی و سطوح محلول پاشی قرار گرفت. بیشترین میزان ترکیبات مذکور در ترکیب تیماری کود دامی + مالچ سیاه مشاهده گردید. کمترین میزان فنل و اسانس نمونه‌ها در تیمار شاهد محلول‌پاشی مشاهده شد. سطح محلول‌پاشی محتوای آنتوسیانین را در سطح 300 میلی لیتر عصاره جلبک دریایی تحت تاثیر مثبت قرار داد. در کل تیمارهای مورداستفاده در پژوهش حاضر تاثیر مثبت بر صفات فیزیولوژیک و مرفولوژیک همیشه بهار داشت و قابل توصیه به کشاورزان می باشد. پرونده مقاله