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Open Access Article
1 - Comparison of Confidor and Palizin in control of greenhouse whitefly adults in Gerbera commercial greenhouses in Pakdasht
Zahra Ali Bazhashi Samin Seddigh Bahram TafaghodiniaGerbera is attacked by a large number of pests, one of the most important of which is greenhouse whitefly (Trialeurodes vaporariorum Westwood). Currently, it is controlled by chemical and large amounts of money are used to import insecticides to control this pest annual MoreGerbera is attacked by a large number of pests, one of the most important of which is greenhouse whitefly (Trialeurodes vaporariorum Westwood). Currently, it is controlled by chemical and large amounts of money are used to import insecticides to control this pest annually. In current research, the effect of Palizin and Imidacloprid in T. vaporariorum control in commercial gerbera greenhouses was compared. The experiment was performed in a commercial greenhouse in Pakdasht, Tehran. The same size and none flower gerbera pots were selected for further analysis. Before and after the experiment, the number of nymphs and adults were estimated. Selected factors were included: the pesticide in two levels, pesticide dose in three levels (0.5, 1 and 1.5), application time in three levels (hours 8, 12 and 16) and replications in a month in three levels (2, 4 and 6). Data was analyzed using Design Expert 10 software with RSM (Response Surface Method) method. Based on the result, the mortality percentage of whitefly adults during the use of Confidor is significantly higher than Palizin. Also the only significant factor was the pesticide type, and other factors will not make any significant changes in the response. Manuscript profile -
Open Access Article
2 - Physiological response of Gerbera jamesonii L. cut flowers to the cola and peppermint essence.
Mehrdad Babarabie Hossein Zarei Feryal Varasteh -
Open Access Article
3 - Application of Microorganisms Compared with Nanoparticles of Silver, Humic Acid and Gibberellic Acid on Vase Life of Cut Gerbera Goodtimming
S. Ansari E. Hadavi M. Salehi P. MoradiGerbera one of 10 important cut flowers in the world and Iran. One of the most problems is low-life after harvest and neck bending. Producers want to increase longevity of these flowers with using chemical solutions. With the aim of achieving the best chemical treatment MoreGerbera one of 10 important cut flowers in the world and Iran. One of the most problems is low-life after harvest and neck bending. Producers want to increase longevity of these flowers with using chemical solutions. With the aim of achieving the best chemical treatments to increase flower vase life gerbera Goodtimming, nano silver (5 mg l-1), humic acid (50 mg l-1), gibberellic acid (2.5 mg l-1) and Lactobacillus plantarum 110 CFU m l-1 and Lactococcus lactis110 CFU ml-1 with sucrose (4%) compared with controls. This study in carried out with 6 replications. Cut flowers recutted to 35 ± 2 cm, and then tested in different solutions for 20 days. The results showed that silver nanoparticles (5 mg l-1) +sucrose 4%+gibberellic acid 2.5 mg l-1with the 19.5 days vase life compared with controls (17.67days) had the highest durability. Distilled water+ sucrose 4% with 5.98 mm stem diameter was better than control (5.49 mm) (P £0.01), while humic acid 50 mg l-1+ sucrose 4%+gibberellic acid 2.5 mg l-1 had lowest average daily stem diameter (5.44 mm), respectively. Highest water uptake observed in silver nanoparticles 5 mg l-1+sucrose 4%+gibberellic acid 2.5 mg l-1 treatment (8.78 ml g-1 F.W.). Silver nanoparticles 5 mg l-1+sucrose 4%+gibberellic acid 2.5 mg l-1 had highest fresh weight per day (24.89 g) and dry weight (4.96 g), respectively. Manuscript profile -
Open Access Article
4 - Impact of Arbuscular Mycorrhizal Fungi and Pseudomonas Fluorescens with Various Levels of Superphosphate on Growth Enhancement and Flowering Response of Gerbera
Karishma Kuldeep Yadav Anju Tanwar Ashok AggarwalGerbera jamesoniiis of commercial significance and fifth most used cut flower in the world today. A pot experiment was performed to see the effect of co-inoculation of arbuscular mycorrhizal fungi (AMF) i.e. (Glomus mosseae andAcaulospora laevis) with phosphate solubili MoreGerbera jamesoniiis of commercial significance and fifth most used cut flower in the world today. A pot experiment was performed to see the effect of co-inoculation of arbuscular mycorrhizal fungi (AMF) i.e. (Glomus mosseae andAcaulospora laevis) with phosphate solubilizing bacteria Pseudomonas fluorescensin the presence of different doses of superphosphate (low, medium, high) on growth establishment and flowering response of Gerbera. Among all treatments, plants inoculated with mix culture of G. Mosseae +A. laevis+P. fluorescens showed best response in terms of greater root length, root biomass, percent root colonization, AM spore number, number of flowers, phosphorus content and phosphatase activity at lower concentration of superphosphate. Moreover, maximum increase in leaf area and shoot biomass was found in plants treated with dual combination of G. mosseae +P. fluorescens at lower concentration of superphosphate. This study provides a good scope for commercially utilizing the efficient strains of AM fungi withP. fluorescens in the establishment and growth improvement of Gerbera. Manuscript profile -
Open Access Article
5 - The Role of Preservative Compounds on Number of Bacteria on the End of Stems and Vase Solutions of Cut Gerbera
T. Oraee A. Asghar Zadeh M. Kiani A. OraeeThis study was conducted to evaluate the effect of preservative solutions on vase life, number of bacteria in the end of stem and in vase solution of cut gerbera 'Double Dutch' and 'Red Explotion'. Cut flowers were pulse-treated with nano-silver (2, 4, 6, 8 or 10 mg L-1 MoreThis study was conducted to evaluate the effect of preservative solutions on vase life, number of bacteria in the end of stem and in vase solution of cut gerbera 'Double Dutch' and 'Red Explotion'. Cut flowers were pulse-treated with nano-silver (2, 4, 6, 8 or 10 mg L-1) and thymol (12.5, 25, 50, 75 or 100 mg L-1) +5 % sucrose. Experiment was conducted in completely randomized design with 5 replications and 1 flower in each experimental unit. Flower were harvested from a commercial greenhouse and transported to laboratory with 22±1oC temperature and 60±5% relative humidity. According to the results, these materials had positive effects on vase life of flowers.6 mg L-1 nano-silver treatments in ‘Red Explotion’ cultivar had highest longevity (14 days). All treatments were effective on decreasing of bacteria in stem end and solution. In 4 and 6 mg L-1 SNP treatments was not any bacteria in vase solutions of ‘Red Explotion’ cultivar. Resulty showed that nano-silver can be use for increasing the vase life of cut gerbera ‘Double Dutch’ and ‘Red Explotion’. Manuscript profile -
Open Access Article
6 - Study on the Effect of Different Growing Media on the Growth and Yield of Gerbera(Gerbera jamesonii L.)
M. A. Khalaj M. Amiri S.S. SindhuTo study the effect of different substrates on growth and yield of gerbera, this experiment was carried out as randomized completely block design with 14 treatments and 3 replications. Treatments were as fallowing: fine sand, peat+fine sand (25%+75%), peat+fine sand (50 MoreTo study the effect of different substrates on growth and yield of gerbera, this experiment was carried out as randomized completely block design with 14 treatments and 3 replications. Treatments were as fallowing: fine sand, peat+fine sand (25%+75%), peat+fine sand (50%+50%), perlite+peat (75%+25%), perlite+peat (50%+50%), perlite+peat (25% +75%), perlite+peat+expanded clay (25%+70%+5%), perlite+peat+ expanded clay (50 %+25%+25%), perlite+peat+expanded clay (25%+50%+25%), perlite+expanded clay (50%+50%), cocopeat, cocopeat+ perlite (75%+25%), cocopeat+perlite (50%+50%), coco peat+perlite+ expanded clay (50%+25%+25%), plants were fertilized with a same nutrient solution. Results showed that the growing medium containing perlite+ peat+expanded clay (25%+70%+5%) was the best treatment. In this substrate, flower number, flower diameter, shoot diameter, stem neck diameter, flower height and vase life showed significant difference among growing media. Manuscript profile -
Open Access Article
7 - تاثیر اسانسهای اکالیپتوس و گل محمدی بههمراه ساکارز روی عمر پس از برداشت و خصوصیات فیزیولوژیکی گل بریده ژربرا رقم ’آلین داکاز‘
لیلا خسروی نهرآبادی ناهید رود آتوسا دانیایی مهرداد باباربیع مونا شادباشگل شاخه بریده ژربرا یکی ازگلهای مهم در دنیا میباشد که علیرغم افزایش تولید این گیاه در کشور ایران، دوام عمر آن به دلیل پژمردگی سریع گلبرگها و خمیدگی گردن گل، کم است. بهمنظور افزایش عمر گلجایی گل بریده ژربرا (رقم آلین داکاز) از اسانسهای گیاهان اکالیپتوس و گل محمدی و Moreگل شاخه بریده ژربرا یکی ازگلهای مهم در دنیا میباشد که علیرغم افزایش تولید این گیاه در کشور ایران، دوام عمر آن به دلیل پژمردگی سریع گلبرگها و خمیدگی گردن گل، کم است. بهمنظور افزایش عمر گلجایی گل بریده ژربرا (رقم آلین داکاز) از اسانسهای گیاهان اکالیپتوس و گل محمدی و ترکیب این دو اسانس در غلظت 200 میلیگرم در لیتر به همراه ساکارز 4 درصد و از ساکارز 4 درصد بهتنهایی واز آب مقطر نیز بهعنوان تیمار شاهد استفاده شد. در این آزمایش صفات عمر گلجایی، وزن تر، مواد جامد محلول، جذب محلول و خمیدگی ساقه مورد بررسی قرار گرفت. بیشترین و کمترین عمر گلجایی به ترتیب در تیمار اسانس اکالیپتوس و شاهد حاصل شد. البته اسانس گل محمدی و ترکیب آن با اسانس اکالیپتوس نیز عمر گلجایی را افزایش دادند. بیشترین وزن تر و جذب محلول در تیمار اسانس اکالیپتوس بدست آمد. بیشترین قطر ساقه در تیمارهای اسانس گل محمدی و ساکارز مشاهده شد و بیشترین میزان مواد جامد محلول در تیمار ساکارز حاصل شد. همچنین تیمار شاهد بیشترین خمیدگی ساقه را داشت. بهطور کلی نتایج نشان داد که استفاده از اسانس اکالیپتوس و گل محمدی در ترکیب با ساکارز میتواند بهعنوان محلول نگهدارنده گل بریده ژربرا بهکاربرده شود. Manuscript profile -
Open Access Article
8 - Comparative Evaluation of Growth, Yield and Quality Characteristics of Various Gerbera (Gerbera jamesonii L.) Cultivars under Protected Condition
Malik Abid Mahmood Naveed Ahmad Muhammad Saleem Akhtar KhanTen gerbera cultivars (‘Labinel’, ‘Lilla’, ‘Alp’, ‘Alberino’, ‘Bonnie’, ‘Avemaria’, ‘Mammut’, ‘Lexus’, ‘‘Terramixa ’ & ‘Sarolta’) were evalu MoreTen gerbera cultivars (‘Labinel’, ‘Lilla’, ‘Alp’, ‘Alberino’, ‘Bonnie’, ‘Avemaria’, ‘Mammut’, ‘Lexus’, ‘‘Terramixa ’ & ‘Sarolta’) were evaluated for their growth, yield and quality characteristics under protected conditions during 2011. Among the cultivars studied, there were highly significant variations observed for growth, yield and quality parameters. Longest stalk length (60.3 cm) was exhibited by the cultivar ‘Alberino’ followed by ‘Lexus’ (59.0) and ‘Mammut’ (54.0 cm). The same cultivar also produced flowers with maximum diameter. With respect to vegetative parameters like number of leaves per plant and plant spread were also more in the same cultivar. Maximum number of flowers 135 per square meters was recorded in cv. ‘Avemaria’ (135) followed by ‘Alberino’ (125). Maximum vase life was recorded in cultivars ‘Alberino’ and ‘Lexus’ (6.6) followed by ‘Mammut’ (5.6) and ‘‘Sarolta’’ (5.6). Excellent quality flowers were observed in cultivar ‘Alberino’ (4.8) followed by ‘Lexus’ (4.4). Cultivar ‘Alberino’ and ‘Lexus’ were found superior with respect to growth, yield and vase-life characteristics under protected conditions. Manuscript profile -
Open Access Article
9 - The Effect of Non-Harmful Compounds Environmentally (Eucalyptus and Rosa damascena essences) on Vase Life and Some Physiological Characteristics of Gerbera Cut Flowers
Leila Khosravi Nahid Rood Atoosa Danyaei Mehrdad Babarabie -
Open Access Article
10 - Effect of sources and concentrations of folliar application of potassium on the yield and quality of gerbera (Gerbera jamesonii cv. Stanza)
Sharareh Mortezaiefard sepideh Kalatehjari majid basiratEffects of foliar application of potassium sources and their concentrations on the yield and quality of hydroponically grown cut flower Gerbera jamesonii cv. Stanza was studied. The experiment was carried out at Pakdasht, Varamin, in 2008. Plants were either spray MoreEffects of foliar application of potassium sources and their concentrations on the yield and quality of hydroponically grown cut flower Gerbera jamesonii cv. Stanza was studied. The experiment was carried out at Pakdasht, Varamin, in 2008. Plants were either sprayed with three salts included KNO3, K2SiO3 and K2SO4 with a net potassium concentration of 0, 1.5 and 3 g/l respectively. The treatments were conducted as a complete randomized design with five replicates. The resultes indicated that all K treatments increased the yield significantly at 1% of probability level. The treatment KNO3 showed the highest yield. The quality of the gerberas was significantly improved in KNO3 and K2SiO3 treatments (3g/l) as compared with the control. An increase of potassium concentration in all cases, rised amount of leaf potassium content in plants. A significant increase of chlorophyll ratio was observed in all potassium treatments as compared with the control. In turn, cocentrations of Ca and Mg elements were reduced in all plants treated with potassium treatments. Level of potassium has been increased in foliage parts without any side effects on plant quality. By mean comparisons, it is concluded that the foliar application of potassium nitrare and potassium silicate (3g/l) disclosed high advatages on the growth and quality of cut flower gerbera. Manuscript profile
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