Journal of Ornamental  Plants: 4 (3)

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1 - Screening of Eleven Festuca arundinaceaNative Populations for NaCl Tolerance in Order to Use in Green Space
Azadeh Mousavi Bazaz Ali Tehranifar Mohammad Kafi Ali Gazanchian Mahmood Shoor

In the turfgrass industry, the need for salinity tolerant turfgrasses is increasing because of the increased use of saline and non-potable water. Greenhouse container experiments were conducted to determine the relative salinity tolerance and growth responses of eleven چکیده کامل

In the turfgrass industry, the need for salinity tolerant turfgrasses is increasing because of the increased use of saline and non-potable water. Greenhouse container experiments were conducted to determine the relative salinity tolerance and growth responses of eleven native populations of tall fescue (Festuca arundinacea Schrub) (TF), including: Semirom, Mashhad, Sanandaj, Yasuj, Yazd Abad, Daran, Kamyaran, Gandoman, Borujen, Nasir Abad and Alborz to 8 weeks of salinity stress. Also, commercial TF was usedas control. Four salinity levels of irrigation water (0, 45, 90, 135 mM NaCl) were applied to turfgrasses. Results showed shoot and root dry weight, total leaf area, leaf length, leaf width and leaf firing percentage was significantly affected by salinity for all turfgrasses. The lowest leaf firing percentage at 90 and 135 mM, was related to Sanandaj population and commercial TF, and the highest leaf firing percentage was related to Alborz at 45 mM and Gandoman population at 90 and 135 mM. Shoot dry weight, total leaf area and leaf length of Sanandaj population was less affected by salinity compared to other populations. Based on data on growth parameters, the salinity tolerance ranking of selected populations was: Sanandaj >Daran >Yasuj>Kamyaran >Nasir Abad >Semirom >Mashhad >Alborz >Yazd Abad >Borujen >Gandoman . These results showed the potential and competetive role of TF native populations compared to commercial TF. پرونده مقاله

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2 - The Effect of Magnetic Water and Irrigation Intervals on the Amount of the Nutrient Elements in Soil and Aerial Parts of Periwinkle (Catharanthus roseus L.)
Davood Hashemabadi Fatemeh Zaredost Maryam Jadid Solimandarabi

The periwinkle with the scientific name of Catharanthus roseus isone of the most important ornamental plants of the Apocynaceae family. Inorder to evaluate the effect of different waters on the amount of the nutrientelements in soil and aerial parts of Catharanthus rose چکیده کامل

The periwinkle with the scientific name of Catharanthus roseus isone of the most important ornamental plants of the Apocynaceae family. Inorder to evaluate the effect of different waters on the amount of the nutrientelements in soil and aerial parts of Catharanthus roseus, a factorial experimentbased on completely randomized design was conducted in 3 replications.Experimental treatments were including: type of water (magnetized tapwater, tap water, magnetized well water and well water) and irrigationintervals (2, 4, 6 and 8 days). In this study, the attributes such as display life, plant height, leaf number, the amount of nitrogen, phosphorus and potassiumof the soil and the plant were evaluated. According to results, the maximumdisplay life (42.23 days), plant height (21.71 cm) and leaf number (165.88)were related to the treatment of irrigation with the magnetized tap waterwith2 days interval. The maximum amount of nitrogen of the plant wasrelated to the treatment of irrigation with the magnetized well water +2 daysinterval (0.32 mgl-1). The treatments of irrigation with the non- magnetizedtap and well water with 8 days interval had the maximum amount of nitrogenof the soil. The maximum amount of potassium of the plant with 56.21 mgl-1was obtained in the treatment of irrigation with the magnetized well waterwith 2 days interval. The maximum amount of phosphorus of the plant with39.5 mgl-1and then 38.8 mgl-1were related to the treatments of irrigationwith the magnetized well water + 2 days interval and irrigation with the magnetizedtap water+ 2 days interval. پرونده مقاله

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3 - Turf Quality Characteristics of Crested Wheatgrass (Agropyron cristatum(L.) Gaertner.) Specimens Native to Iran
Hassan Bayat Hossein Nemati Ali Tehranifar Ali Gazanchian

Crested wheatgrass (Agropyron cristatum (L.) Gaertner.) is a potentialsource of low-maintenance turf species for use in areas with less water. Themain goal of this study was to evaluate turf quality characteristics of 24crested wheatgrass specimens collected from differ چکیده کامل

Crested wheatgrass (Agropyron cristatum (L.) Gaertner.) is a potentialsource of low-maintenance turf species for use in areas with less water. Themain goal of this study was to evaluate turf quality characteristics of 24crested wheatgrass specimens collected from different locations of Iran aslow-maintenance turfgrass. The experimental design was a randomizedcomplete block design with 3 replications. The results showed significantvariation among specimens for turf quality and turf quality components andthere were 15 specimens with an average turf quality rating of 6.0 or higher,indicating adequate quality performance. Mowing quality were higher than 6for all specimens and ranging from 6.30 (210 M) to 7.28 (4049). Habitats ofsamples varied in performance for all traits and different geographical regionsmay offer germplasm with high turf quality performance. There were significantpositive correlation between turf quality and mowing quality (r = 71**) andalso turf quality and tillering (r = 57**). Based on the results of clusteranalysis, the specimens were assigned to 3 clusters and the single specimenfrom cluster 2 had the highest ratings for turf quality (7.95), mowing quality(7.28), color (7.27) and leaf texture (7.10). These results indicated that crestedwheatgrass specimens native to Iran could be an important resource for use aslow-maintenance turfgrass. پرونده مقاله

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4 - Exogenous Putrescine Delays Senescence of Lisianthus Cut Flowers
Davoud Ataii Roohangiz Naderi Azizollah Khandan-Mirkohi

The anti-senescence biogenic polyamines (PAs) putrescine (Put), spermidine(Spd) and spermine (Spm) are involved in plant growth processes andresponses to stress. The physiological mechanism of exogenous Put to affectthe senescence of cut lisianthus flowers during vase l چکیده کامل

The anti-senescence biogenic polyamines (PAs) putrescine (Put), spermidine(Spd) and spermine (Spm) are involved in plant growth processes andresponses to stress. The physiological mechanism of exogenous Put to affectthe senescence of cut lisianthus flowers during vase life was investigated.Fresh cut lisianthus flowers were treated with distilled water (control), 0.5, 1and 2 mM Put and then held at 25 ◦C up to 12 days. Exogenous Put supply at2 mM extended vase life, which was associated with reduced electrolyteleakage and MDA content. Put treatment also reduced activity of lipoxygenase(LOX), is responsible for membrane lipid peroxidation. Put treatment also enhancedactivities of catalase (CAT) and ascorbate peroxidase (APX) anddecreased H2O2 accumulation during vase life. Thus, exogenous Put supplycould maintain membrane integrity by increasing antioxidant system activity,thereby retarding the senescence of cut lisianthus flower during vase life. پرونده مقاله

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5 - Spatial Distribution Pattern of Tetranychus urticae Koch (Acari: Tetranychidae) on Different Rosa Cultivars in Greenhouse Tehran
Fatemeh Bidarnamani Elham Sanatgar Mehdi Shabanipoor

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae),is an economically important pest of ornamental plant in Iran. Thepopulation abundance and spatial distribution were studied on five Rosa cultivarsincluding Maroussia, Wendela, Elderado, Wenede چکیده کامل

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae),is an economically important pest of ornamental plant in Iran. Thepopulation abundance and spatial distribution were studied on five Rosa cultivarsincluding Maroussia, Wendela, Elderado, Wenedetta, and Hot Lady during twogrowing seasons of 2011 and 2012 in greenhouse. The k parameter, index of dispersion,Lloyd’s mean crowding, Morisita’s index and regression methods(Taylor and Iwao) were used to estimate the spatial distribution pattern ofmite. There was improved sampling program by k parameter and coefficientsof regression models. The result indicated that the highest population densityof T. urticae was early of July (2.47 per leaf) and early of September (4.11 perleaf). Also, a sequential sampling plan was developed using the fixed-precisionmethod of Green for estimating the density of the mite. Populations on differentRosa cultivars, especially Maroussia, were aggregated during most of thegrowing season and negative binomial models fit data sets better than thePoisson series. The mean number of two-spotted spider mite per plant had significantlydifference between all plant strata. The fitness percentage of cultivarMaroussia Rosa revealed a slight tendency towards the Poisson distribution, sothat 58 and 14.1 percent of data sets from T. urticae on cultivar Wenedettapopulations fit the Poisson distribution. These results fully support findings ofdistribution indices, indicating an aggregated distribution. Determining samplingprogram and spatial distribution pattern of the pest can effectively help to designand perform of IPM. پرونده مقاله

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6 - Pathogenicity of Alternaria Species Isolated from Chamaecyparis lawsonia In Vitro
Mohammad Reza Safari Motlagh Fatemeh Ramezani Rad Shahram Sedaghathoor

Chamaecyparis lawsonia, which brings beauty in parks and green space,is attacked by a variety of pathogenic agents specially fungi. In this study, someChamaecyparis lawsonia available in parks that had disease symptoms were sampled. After sample collection, in order to چکیده کامل

Chamaecyparis lawsonia, which brings beauty in parks and green space,is attacked by a variety of pathogenic agents specially fungi. In this study, someChamaecyparis lawsonia available in parks that had disease symptoms were sampled. After sample collection, in order to isolate fungal pathogens, cuts ofthe infected plant tissues were placed on PDA (potato dextrose agar) and laterwere put on WA (water agar) for identifying. Then test of pathogenicity of theseisolates on Chamaecyparis lawsonia was done inside the box with plasticstopper. To do this, cuts of colonies of 4 day fungi obtained on PDA mediumwere put on leaves. The final evaluation was performed after 10 days. This experimentwas performed in a completely randomized design with 3 replicationsand 7 treatments. The results showed that isolated fungi are in 2 groups asfollowing: Alternaria franseriae and Alternaria tenuissima. According to theresults, both species were pathogenic on host. Totally, A. franseriae showedmore disease severity compared to A. tenuissima on C. lawsonia. پرونده مقاله

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7 - Effect of Gibberellic Acid Pulsing and Sucrose Continuous Treatment on Some Qualitative Characteristics of Cut Rose Flower cv. Velvet
Zahra Ahmadi Rahim Naghshiband Hassani

The aim of this study was the better assessment of the relationship ofpulsing treatment of gibberellic acid as an anti-senescence agent and holdingin sucrose as a carbohydrate supply resource on improving some qualitativeand physiological attributes of cut rose flower c چکیده کامل

The aim of this study was the better assessment of the relationship ofpulsing treatment of gibberellic acid as an anti-senescence agent and holdingin sucrose as a carbohydrate supply resource on improving some qualitativeand physiological attributes of cut rose flower cv. Velvet. Hence, anexperiment involving the pulsing treatment with gibberllic acid (GA3) at 0,20, 40 and 60 mg L-1, for 24 hours, and holding them in sucrose at 0, 2 and3% with 250 mg L-1 of 8- HQS as an antimicrobial agent for all holdingtreatments was conducted. The study was performed as a factorial experimentbased on a randomized completely design (RCD) with three replication foreach combination treatment. Applying GA3 pulse treatment alone at all concentrationsincreased significantly vase life and its effect enhanced withsucrose holding at 2 and 3% compared with control. The effect of GA3pulsing in increasing of stem relative fresh weight (RFW) and solutionuptake (SU) was hastened by sucrose holding treatment at 2 and 3%.Highest amount of flower opening and petal water content during vase lifeperiod was observed in 60 mg L-1 of GA3 pulsing and sucrose 3% holdingtreatment which had been longer flower diameters and greater petals.Gibberellic acid pulsing alone and along with sucrose holding treatment atall concentrations caused to prevention of leaf chlorophyll degradationcompared with control. In conclusion, GA3 pulsing at 40 mg L-1 along withsucrose 2% holding treatment had a significant effect on improving vase lifeand other qualitative attributes of cut rose flower cv. Velvet. پرونده مقاله

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