Journal of Ornamental  Plants: 4 (3)

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1 - Physiological Characteristics of Two Rose Cultivars (Rosa hybrida L.) under Different Levels of Shading in Greenhouse Conditions
Mansoure Hatamian Hassan Salehi

In many parts of Iran high light intensities during summer can induce stress in cut flower production under open field and greenhouse conditions. Despite roses prefer sunny places for optimum growth, but in practice some levels of rough shading is applied in greenhouse چکیده کامل

In many parts of Iran high light intensities during summer can induce stress in cut flower production under open field and greenhouse conditions. Despite roses prefer sunny places for optimum growth, but in practice some levels of rough shading is applied in greenhouse production to improve the quality of cut flowers. So, it is useful to find the light intensities under which different rose cultivars produce optimum yield with acceptable market quality. In present study, different light intensities were applied for two rose cultivars of ‘Red One’ and ‘Gulmira’, by shading levels of 1200 (without shading as control), 640, 520 and 240 µmol m-2 s-1, using green plastic nets. The result showed that leaf protein concentration, peroxidase activity, petal anthocyanin concentration and carbohydrate levels were significantly different among shade treatments, as the highest protein concentration was observed in 640 µmolm-2 s-1. The highest concentration of anthocyanin of petals was observed in ʻRed Oneʼ under 520 µmolm-2 s-1. Furthermore, in ʻGulmiraʼ the highest amount of anthocynin was in 520 µmol m-2 s-1, but this was not statistically significant compared to other shading treatments. The highest amount of leaf carbohydrate was in 520 µmol m-2 s-1. The results indicate that shading up to a light intensity of 520 µmol m-2 s-1 is beneficial for quality improvement of these rose cultivars when light intensity is high. پرونده مقاله

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2 - Callus Induction and Organogenesis Capacity from Lamina Explant of Petunia × hybrida F1 Induced by BA and NAA
Behzad Kaviani Danesh Kazemi

Plant growth regulators (PGRs) have an important role in callus induction and organogenesis of plant explants cultured in vitro conditions. Callus has a proper potential for plant regeneration through indirect organogenesis and embryogenesis as well suspension culture, چکیده کامل

Plant growth regulators (PGRs) have an important role in callus induction and organogenesis of plant explants cultured in vitro conditions. Callus has a proper potential for plant regeneration through indirect organogenesis and embryogenesis as well suspension culture, genetic transformation and production of secondary metabolites. In current experiment, leaf explants of Petunia × hybrida F1 were cultured on basal Murashige and Skoog (MS) medium supplemented with different concentrations of N6-benzyladenine (BA) (0.25, 0.50 and 1.00 mg l−1) and ɑ-naphthalene acetic acid (NAA) (0.10, 0.20 and 0.30 mg l−1). The maximum fresh weight (5.16 g), dry weight (0.31 g) and volume of callus (24.50 cm3) was obtained in the medium containing 1.00 mg l−1 BA in combination with 0.30 mg l−1 NAA. Leaf explants did not produce callus in medium without PGRs. Plantlets were produced on all callus grown on the media containing PGRs. The most plantlets number was produced on callus induced on medium enriched with 1.00 mg l−1 BA in combination with 0.30 mg l−1 NAA. The plantlets regenerated in vitro with well-developed shoots and roots were successfully established in pots containing peat and perlite (1:1) and grown in a greenhouse within 4 weeks with a 100% survival rate. The regenerated plants were morphologically identical with mother plants and did not show any detectable phenotypic variation. پرونده مقاله

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3 - Soil Cover Effects on Yield and Some Physiological Characteristics of Marigold (Calendula officinalis L.) under Methanol Foliar Application
Lamia Vojodi Mohamm Bagher Hassanpouraghdam Rana Valizadeh Kamran Asghar Ebrahimzadeh

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 int چکیده کامل

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

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4 - Seed Priming Increases Germination and Seedling Quality in Antirrhinum, Dahlia, Impatiens, Salvia and Zinnia Seeds
Eren Ozden Sıtkı Ermiş İbrahim Demir

This study was carried out to investigate the effect of hydropriming on seed germination and seedling growth of five different flower seed species (Antirrhinum, Dahlia, Impatiens, Salvia and Zinnia). Hydropriming (20oC, 24 h), surface dried or dried back afterwards, was چکیده کامل

This study was carried out to investigate the effect of hydropriming on seed germination and seedling growth of five different flower seed species (Antirrhinum, Dahlia, Impatiens, Salvia and Zinnia). Hydropriming (20oC, 24 h), surface dried or dried back afterwards, was found to increase germination percentage, seedling emergence and fresh and dry weight. In all species, the maximum advantage in germination and emergence was obtained in those that were surface dried. The maximum benefit was observed in Antirrhinum and Dahlia. In these two species, surface dried seeds were 18% and 17% superior in terms of germination, and 20% and 13% superior in terms of seedling emergence compared to the control, respectively. For the other three species, although there was a positive effect, it was less pronounced. It was concluded that hydropriming can be used to enhance seedling quality in flower seeds. پرونده مقاله

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5 - Pathogenicity of Fungal Agents Related to the Diseases of Conifers of Cupressaceae in Greenhouse Conditions
Mohammad Reza Safari Motlagh Fatemeh Ramezani Rad

Conifers, a component of beauties of parks and landscapes, are infected with diverse pathogens, especially fungi. In this research, samples were collected from conifers displaying symptoms of disease in parks and landscapes of Rasht in Iran and for the isolation and ide چکیده کامل

Conifers, a component of beauties of parks and landscapes, are infected with diverse pathogens, especially fungi. In this research, samples were collected from conifers displaying symptoms of disease in parks and landscapes of Rasht in Iran and for the isolation and identification of pathogenic fungi, pieces of infected tissues were placed in PDA and at the next stages in WA, PCA and SNA media and in total, 58 isolates were isolated andidentified based on morphological characters. These fungi belonged to Alternaria franseriae, Alternaria tenuissima, Curvularia pallescens, Fusarium sambucinum and Pestalotia sp. Afterward, pathogenicity test of these fungi was done on Chamaecyparis lawsoniana, Chamaecyparis lawsoniana 'Minima Aurea', Thuja sp., Juniperus horizontalis, Juniperus chinensis and Cupressus arizonica and to do so, a spore suspension was prepared with the concentration of 5×104 spores per ml distilled water and then, the studied plants were inoculated. Final assessments were carried out 10 days later to determine disease intensity. Results showed that A. franseriae on C. lawsoniana, A. tenuissima on C. lawsoniana 'Minima Aurea', C. pallescens on C. lawsoniana and J. chinensis, F. sambucinum on J. horizontalis and Pestalotia sp. on C. arizonica and C. lawsoniana 'Minima Aurea', were pathogenic. The most disease severity was caused by A. franseriae on C. lawsoniana and the least disease severity by Pestalotia sp. on C. lawsoniana 'Minima Aurea'. Among the studied plants, C. lawsoniana and C. lawsoniana 'Minima Aurea' showed the greatest sensitivity and the most resistance, respectively. Analysis of variance revealed significant differences in disease intensity of the studied fungi. The occurrence of A. franseriae, A. tenuissima and C. pallescens on conifers has been reported for the first time from Iran on conifers. پرونده مقاله

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6 - Strategies of gaining competitive advantage based on focusing on customers and market strategy for Extension and Development of medicinal and ornamental plants Enterprises in Ilam province
homayoon moradnezhadi mohamad jasemi hossein mahdizade

Medicinal and ornamental plants are one of the most valuable resources in a wide range of natural resources in Iran in the case of scientific knowledge, cultivation, development and proper utilization, can play an important role in public health and employment and incre چکیده کامل

Medicinal and ornamental plants are one of the most valuable resources in a wide range of natural resources in Iran in the case of scientific knowledge, cultivation, development and proper utilization, can play an important role in public health and employment and increase of non-oil exports This study explores strategies of gaining a competitive advantage of medicinal herbs in Ilam Province based on the strategy of focusing on customers and markets. This study applied a mix method to achieve the objectives. In the quality section the Delphi method and in a quantity section the Analytic Hierarchy Process (AHP) has been used. In the quality section, the statistical population was 12 individuals consisting of marketing experts, entrepreneurs and medicinal herbs and ornamental plants experts which have been selected based on using purposing sampling method. In the quantity section, 33 individuals from medicinal herbs and ornamental plants have been studied. The required data were collected using a paired comparison and were analyzed by using the software Expert Choice11. The results showed that solutions in the Medicinal and ornamental plants contribute to competitive advantage. Moreover, Identification of the competitors’ strengths and weaknesses play the most important role in creating the advantage for medicinal herbs and ornamental plants in Ilam province. پرونده مقاله

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7 - The Feasibility Study on the Prediction of Ploidy Levels Base on Pollen Dimensions in Rosa
Toktam Ahmadi Zahra Karimian Maryam Jafarkhani Kermani

Ploidy level is one of important factors for plant breeders; therefore models that can predict it are very practical. To estimate of ploidy levels in some species, hybrids and cultivars of Rosa, dimensions of over 500 pollens include pollen length, width and area measur چکیده کامل

Ploidy level is one of important factors for plant breeders; therefore models that can predict it are very practical. To estimate of ploidy levels in some species, hybrids and cultivars of Rosa, dimensions of over 500 pollens include pollen length, width and area measured at ABRII. The calculations were carried out in several stages. First, Ploidy levels were regressed with pollen dimensions, after that, pollen area was regressed with pollen length and width. Finally the best models from previous step were tested to estimate of pollen level. In the present study, although a highly positive correlation (r2 ≥0.80, except for 2x) was obtained between pollen length and pollen area, but to predict of ploidy level, the correlation between it and pollen demotions was very weak (r2 ≥0.24). Results of test the best models (with highest r2 and lowest SES) for estimating of ploidy level, despite could be used, but because of the strong correlation among them, were not reliable. پرونده مقاله

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8 - Effect of Growth Medium and Calcium Nano-Fertilizer on Quality and Some Characteristics of Gerbera Cut Flower
Leila Mohammadbagheri Davood Naderi

In order to evaluate the effect of medium and spraying calcium nano-fertilizer on quality of cut gerbera flowers, an experiment was conducted as factorial in completely randomized design with 7 media and 3 calcium nano-fertilizer concentrations with 3 replications. The چکیده کامل

In order to evaluate the effect of medium and spraying calcium nano-fertilizer on quality of cut gerbera flowers, an experiment was conducted as factorial in completely randomized design with 7 media and 3 calcium nano-fertilizer concentrations with 3 replications. The media included cocopeat + perlite (1:1), peat moss + perlite (1:1), mushroom compost + perlite (1:1), peat moss + cocopeat + perlite (1:1:2), mushroom compost + peat moss + perlite (1:1:2), mushroom compost + cocopeat + perlite (1:1:2) and mushroom compost alone. The concentrations of calcium nano-fertilizer were 0, 1 and 2 mgL-1. Results demonstrated that different media had significant influence on flower diameter, neck flower diameter and vase life. The highest diameter of flower and neck flower were observed in peat + perlite (1:1), the highest flower fresh weight in cocopeat + mushroom compost + perlite (1:1:2) and the greatest vase life in peat + cocopeat + perlite (1:1:2) media. Calcium nano-fertilizer had a significant effect on vase life and flower quality, so that vase life was increased by enhancing the concentration of calcium nano-fertilizer. In interactions between medium and nano-calcium fertilizer, the highest flower number was observed in peat + mushroom compost + perlite (1:1:2) medium without nano-calcium fertilizer, and the greatest anthocyanin was related to peat + cocopeat + perlite (1:1:2) medium without nano-calcium fertilizer. There was no significant interaction in other traits. پرونده مقاله

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