Journal of Ornamental Plants
Volume:8 Issue: 3, Summer 2018

To evaluate the effect of nanosilver (5, 10 and 20 mg l-1), hydrogen peroxide (200, 400 and 600 µM) and Nanosil (200, 400 and 600 µM) as antimicrobial compounds in vase solution of cut rose cv. ‘Grand Press Angela’ flowers, an experiment with 10 treatments and 3 replications was conducted in a completely randomized design. Cut rose flowers were continuously treated with these compounds. The results indicated a significant and positive impact of Nanosil on the measured traits. The highest vase life (13.16 days), maximum solution uptake (0.943 ml g-1 F.W.), the lowest fresh weight loss (6.31 g), the lowest bacterial population in stem end (87.67 Log10 CFU ml-1) and the highest petals carotenoid (17.61 µg g-1 F.W.) were related to the 400 µM Nanosil treatment. Most POD enzyme activities were recorded for the treatment of nanosilver 5 mg l-1 (3.94 nmol g-1 F.W.) and 400 µM Nanosil (3.86 nmol g-1 F.W.). Different concentrations of nanosilver were not successful in keeping vase life and its related traits because of the continuous use of these compounds. Different concentrations of hydrogen peroxide of evaluated characteristics were superior to the control. Overall, treatment with 400 µM Nanosil is recommended as an effective treatment for long-term preservation of cut flowers of roses as it was the best treatment and also had the longest vase life.

The ornamental and medicinal saffron with high economic value encompasses a great share of non-oil exports in Iran. As a result, identification of suitable areas for saffron cultivation in Ardabil province located in northwestern part of Iran necessitate effective planning for expanding cultivation and production of this product. Given the effect of various environmental factors on growth and yield of saffron, land evaluation process requires comprehensive spatial and descriptive information for cultivation of this plant. Geographic Information Systems (GIS) allows taking advantage of this type of data and facilitates spatial analysis of collected data based on identified models. In this study, Multi-criteria Decision-making (MCDM) and Analytic Hierarchy Process (AHP) methods were used based on environmental ecological needs for saffron cultivation. Modeling and spatial analysis of data layers were performed in ArcGIS software. Research methods encompass data collection and entry, statistical calculations and analyses, criteria clustering and valuation, spatial modeling and integration of diverse information. Accordingly, land capability of Ardabil province was assessed for saffron cultivation. Final zoning map was prepared. The results showed effectiveness of hierarchical analysis in assessment of land capability for cultivation of saffron. According to this criteria, Ardabil province was divided into four parts as follows: 19.8 % of this province had highly suitable capability (355429.8 ha), 26.7 % had suitable capability (479291.7 ha), 29.3 % had moderate suitability (525964.3 ha) and 24.2 % had no suitability in cultivation of this plant (434414.2 ha). As a result, it is recommended to cultivate saffron in northern part of Ardebil (Moghan).

In order to study on different methods of application of polyamines (putrescine, spermine, spermidine) on some morphological, physiological, enzymatic and vase life of Rosa hybrida cv. ‘Dolce Vita’, experiment was conducted as a factorial experiment in a completely randomized design with 32 treatments, 3 replicates and each replication containing 5 vases, a total of 480 vases were executed. First factor was, putrescine, spermine, spermidine (50, 100 mg/l) and second factor was 4 methods of uses (pre-harvest spray, postharvest spray, 24 hrs pulse and continuous). We are 2 blanks in this experiment: distilled water and 3 % sucrose + 3 mg l-1 nanosilver. Morphological, physiological and enzymatic traits such as relative fresh weight, cell membrane stability index, anthocyanin of petals, total chlorophyll of leaves, protein, phenylalanine ammonia- lyase and superoxide dismutase enzymes activity and vase life were measured. The results showed that Spm100 mg/l in pre-harvest spray method had the highest rates in protein, activity of phenylalanine ammonia- lyase and superoxide dismutase enzymes. Therefore, according to the results of this study, the method of pre-harvest spraying of polyamines can be recommended as the best way to improve morphological, physiological, enzymatic and vase life of Rosa hybrida cv. ‘Dolce Vita’.

Our study was to develop a rapid and successful method for promoting asymbiotic seed germination and growth and development of protocorm like bodies (PLBs) and subsequent plantlets of Phalaenopsis orchid. Four basal media i.e. Murashige and Skoog (MS), half strength MS (½MS), Knudson C (KC) and, Vacin and Went (VW) supplemented with coconut water and peptone were examined for their effectiveness in large-scale multiplication by asymbiotic seed germination. Seed germination, leaf number, root number, root length, seedling length and fresh and dry weight were scored. Well-rooted plantlets 4-cm in height were transferred to a greenhouse in trays containing expanded clay, charcoal, cocopeat and perlite (4:2:1:1) or sphagnum moss. The seed germination frequency and seedling development was found significantly higher in organic growth supplement-enriched MS and ½MS media. The results indicated that the highest seed germination (94 %) was obtained in MS medium supplemented with 100 mg/L coconut water or 1 g/L peptone and ½MS containing 1 or 2 g/L peptone. However, the longest seedling was found in MS or ½MS media supplemented with 100 mg/L coconut water or MS containing 1 g/L peptone. Ninety-seven percent of plantlets survived after 1 month in mixture media expanded clay: charcoal: cocopeat: perlit.

Crown imperial scattered according to soil structure and organic matter in Zagros regions in Ilam. This plant has been performed an important role in the beautification of environment, tourist attraction and providing of plant essential oils which are used for the production of medicines. The current research was carried out to evaluation spatial distribution pattern of Fritillaria imperialis in Ilam (Manesht and Ghalarang regions) and comparing distance and quadrate method in 2014. Sampling program was random-systematic just four transects with 100 meters length within the extent of 4300 hectare. Distances method are including t2, Hopkins, Holgate, Johnson and Zimmer and Pielou; and quadrates method are including Taylor, Iwao, Morisita, K and CV, were used to determination spatial distribution pattern of crown imperial. Results showed that quadrate method (Morisita and CV) and distance method (Holgate and Peilou) evaluated spatial distribution pattern of crown imperial are random pattern. But the results quadrate method (Taylor, Iwao and K) and distance method (Hopkins, t2 and Johnson and Zimmer) evaluated a clumped pattern for this species in the study area. The results of analysis had been showed that the distance method more accuracy than quadrate method. Also, t2 and Hopkins indexes were the best distance method to identify pattern. Iwao and K indexes was the best one between quadrate method. Overall research results had been showed that indexes (Iwao, K, t2 and Hopkins) highest accuracy and indexes (CV, Morisita, Holgate and Pielou) had the least accuracy.

This experiment was conducted to study the effect of cocopeat: perlite medium with three ratios (v/v) (1:1, 3:1 and 1:3) on some vegetative, flowering and biochemical parameters of two gladiolus cultivars (Strong and White) under soilless conditions in 2016. Data indicated that most vegetative parameters expressed as plant height, leaf number and leaf area, flowering parameter such as spike emergence, spike diameter, spike length and number of florets per spike and biochemical parameters like chlorophyll a, chlorophyll b, soluble sugars and macronutrient uptake N, P and K (%) in leaf were significantly affected in cultivars, media and their interaction. As the results showed, there was a significant interaction between cultivars and media in plant height and dry weight of florets where the higher plant was obtained in white cultivar and cocopeat: perlite with ratio 1:3, while higher dry weight of florets in strong cultivar and cocopeat: perlite with ratio 1:3. All of the parameters studied showed significant increase in the treatment containing coco peat: perlite with ratio 1:3 in both cultivars.