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دسترسی آزاد مقاله
1 - بررسی تأثیر کشت گل و گیاهان زینتی بر اقتصاد شهرستان پاکدشت
معصومه پازکی مجتبی قدیری معصوم علیرضا استعلاجیطی چند دهه گذشته تنوع بخشی به صادرات کشور و به عبارتی دیگر گرایش به استراتژی توسعه صادرات و جهش صادراتی، شدیداً مورد تأکید قرار گرفته است. در این راستا صادرات کالاهای غیرنفتی به منظور جایگزینی هر چه بیشتر سایر کالاها بجای نفت در جهت رشد اقتصادی و ایجاد وتحول ساختاری در چکیده کاملطی چند دهه گذشته تنوع بخشی به صادرات کشور و به عبارتی دیگر گرایش به استراتژی توسعه صادرات و جهش صادراتی، شدیداً مورد تأکید قرار گرفته است. در این راستا صادرات کالاهای غیرنفتی به منظور جایگزینی هر چه بیشتر سایر کالاها بجای نفت در جهت رشد اقتصادی و ایجاد وتحول ساختاری در آن، افزایش فرصت های شغلی، کسب درآمدهای ارزی و در نهایت امکان بروز توانهای بالقوه مدنظر قرار دارد. اصولاً در راستای توسعه اقتصادی، شناخت منابع و عواملی که از مجرای صادرات بر رشد تأثیر می گذارد از اهمیت بالایی برخوردار است , به ویژه منابعی که از مزیت نسبی و خصوصاً از مزیت رقابتی نیز بهره مند باشند. یکی از کالاهایی که به واسطه ویژگی های طبیعی و سوابق تاریخی در برخی از نقاط ایران قابل تولید بوده و به لحاظ کسب درآمدهای ارزی می تواند در ترکیب صادرات غیرنفتی قرار بگیرد، گل و گیاهان زینتی است. با فراهم کردن زمینه تولید گل و گیاهان زینتی در حجم بالا و صادرات آن می توان درهای بازارهای جهانی را بر روی اقتصاد کشور گشود و از آنجایی که این محصولات دارای توان بالقوه ای در کسب درآمد ارزی بالا می باشند، در ترکیب با صادرات سایر کالاهای غیر نفتی می تواند نقش بسیار مهمی در تدوین برنامه اقتصادی بدون نفت و تنوع بخشی به صادرات داشته باشد و از طرف دیگر کشت گل و گیاهان زینتی در روستاها علاوه بر ایجاد اشتغال , سبب افزایش درآمد و پس انداز و انباشت سرمایه روستائیان شده و به توسعه اقتصادی روستا منجر می گردد که نهایتا" توسعه پایدار را در پی دارد. پرونده مقاله -
دسترسی آزاد مقاله
2 - Effect of thyme essential oil and ethanol on vase life and some physiological traits of alstroemeria (Alstroemeria sp.)
Behzad Kaviani Mohammad Reza Safari Motlagh Milad Ghorbanali NazarpourAlstroemeria (Alstroemeria sp.) is a permanent herbaceous plant species. Fast yellowing of Alstroemeria (Alstroemeria sp.) leaves after harvest and before petal shedding is the main factor limiting their vase life. This research investigated the effect of thyme essentia چکیده کاملAlstroemeria (Alstroemeria sp.) is a permanent herbaceous plant species. Fast yellowing of Alstroemeria (Alstroemeria sp.) leaves after harvest and before petal shedding is the main factor limiting their vase life. This research investigated the effect of thyme essential oil (0, 50, 100, and 200 mg/L) and ethanol (0, 10, 20, and 40 mg/L) on retarding the senescence of cut alstroemeria flowers in a factorial experiment. Various quantitative and qualitative traits particularly vase life, flower opening index, water uptake, fresh weight loss, dry weight percentage, and vase solution and stem-end bacteria population were measured. Thyme essential oil at a concentration of 200 mg/L without ethanol application was most influential on vase life, reduction of bacteria population, and water uptake and exhibited almost acceptable dry weight and flower opening rate. Overall, it is concluded that the suitable application of thyme and ethanol at proper rates is effective in extending the vase life of alstroemeria. پرونده مقاله -
دسترسی آزاد مقاله
3 - Optimizing Plant Density, Planting Depth and Postharvest Preservatives for Lilium longifolium
A. Amjad I. AhmadA study was conducted to standardize production and postharvest handling of lily (Lilium longifolium L. cv. Mero Star). In production trial, three plant densities viz.10, 20 and 30 cm between plants in 60 cm spaced rows and two planting depths viz.7.5 and 15 cm were com چکیده کاملA study was conducted to standardize production and postharvest handling of lily (Lilium longifolium L. cv. Mero Star). In production trial, three plant densities viz.10, 20 and 30 cm between plants in 60 cm spaced rows and two planting depths viz.7.5 and 15 cm were compared. Increased plant growth, yield and quality was recorded when plants were grown at a close spacing of 10 cm with 15 cm planting depth. In postharvest experiment, holding preservative solutions revealed significant superiority of cobalt chloride@ 5´10-4 M with longer vase life (9.0 Days), higher relative fresh weight (98.0%) and higher vase solution uptake rate (0.25 g g-1 IFW). However, for pulsing solutions, longer vase life (8.0 days) and higher relative fresh weight (93.0%) was recorded with 500 mg L-1 8-hydroquinoline sulphate (8-HQS) while higher vase solution uptake rate (0.28 g g-1 IFW) for 200 mg L-1 8-HQS. For lilium production, higher plant density with deeper bulb planting proved better and pulsing with 8-HQS followed by placement in cobalt chloride solution improved postharvest performance and extended longevity rather than sucrose. Moreover, lilium did not like sucrose during postharvest handing. These results would help growers and stakeholders to increase lilium yield and improve flower quality and longevity. پرونده مقاله -
دسترسی آزاد مقاله
4 - Study on Effects of Ascorbic Acid and Citric Acid on Vase Life of Cut Lisianthus (Eustoma grandiflorum) ‘Mariachi Blue’
Farnaz Sheikh Seyed Hossein Neamati Navid Vahdati Ali DolatkhahiThe postharvest life of cut Eustoma grandiflorum flowers is limited in open flowers. Therefore a factorial experiment based on a completely randomized design with ascorbic acid (AsA) at 4 levels (0, 100, 200, 300mg L-1) and citric acid (CA) at 3 levels (0, 100, 200 mg L چکیده کاملThe postharvest life of cut Eustoma grandiflorum flowers is limited in open flowers. Therefore a factorial experiment based on a completely randomized design with ascorbic acid (AsA) at 4 levels (0, 100, 200, 300mg L-1) and citric acid (CA) at 3 levels (0, 100, 200 mg L-1) with 3 replications and 3 samples for each replications, was conducted for this purpose. Results indicated that a significant increase with applying ascorbic and citric acid nearly in all traits both individually and in combination, with higher concentrations imposing greater effects (p≤0.05 and p≤0.01). The highest vase life (17.6 days) and petal water content (68.9%) was observed for the interaction of ascorbic acid (300 mg L-1) and citric acid(100 mg L-1) and ascorbic acid (300 mg L-1) and citric acid (200 mg L-1), re-spectively, which shows a 94 and 252% increase compared to control (9.1days and 27.3%). Along with this, relative water content and petal water content raised with AsA and CA increase. Water content also showed a similar manner. Fresh weight decreased in all treatments during experiment, but this reduction was much less in AsA (300 mg L-1) alone and in interactions with CA levels. According to the results of this experiment, ascorbic acid and/or citric acid as cheap, safe and biodegradable compounds are suitable alternatives for chemical treatments in order to prolong vase life of cut flowers of Eustoma. Commercialization of these compounds for optimum formulations needs further experiments. پرونده مقاله -
دسترسی آزاد مقاله
5 - Growth, Yield and Quality of Rosa hybrida L. as Influenced by NaCl Salinity
Iftikhar Ahmad Muhammad Aslam Khan Muhammad Qasim Rashid Ahmad Tauseef Us-samadThe effects of sodium chloride (NaCl) salinity (control; canal water with 0.4 dS m-1), 2.5 dSm-1, 5.0 dS m-1, 7.5 dS m-1 and 10.0 dS m-1, respectively) developed after 6 weeks of pruning (beginning of study) on plant growth, flowering and quality of three cut rose (Rosa چکیده کاملThe effects of sodium chloride (NaCl) salinity (control; canal water with 0.4 dS m-1), 2.5 dSm-1, 5.0 dS m-1, 7.5 dS m-1 and 10.0 dS m-1, respectively) developed after 6 weeks of pruning (beginning of study) on plant growth, flowering and quality of three cut rose (Rosa hybrida L.) cultivars viz. ‘Kardinal’, ‘Angelique’ and ‘Gold Medal’ were studied to achieve better management, quality production and ascertaining salinity tolerance of promising cut roses being grown commercially in Pakistan. Plants were grown in pure sand in order to eliminate substrate salinity effect on plants. Number of leaves branch-1, leaf area, leaf total chlorophyll contents, bud diameter, flower diameter and flower quality were greater when plants were grown with canal water (control) having only 0.4 dS m-1 salinity, which also reduced interval between flushes by early flowering, while plant height, number of flowers plant-1 flush-1, fresh and dry weight of a flower, stem length and diameter were greater with 2.5 dS m-1 substrate salinity followed by canal water (control). Among cultivars, ‘Angelique’proved comparatively more salt tolerant as compared with ‘Kardinal’ and ‘Gold Medal’ by producing vigorous growth and greater number of flowers. In summary, cut rose cultivars studied cannot tolerate higher substrate salinity and preferably be grown with<2.5 dS m-1 NaCl substrate salinity. پرونده مقاله
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