JOURNAL OF ORNAMENTAL PLANTS (JOURNAL OF ORNAMENTAL AND HORTICULTURAL PLANTS)
Year:2018 | Volume:8 | Issue:3 |Papers Count:6

To evaluate the effect of nanosilver (5, 10 and 20 mg l-1), hydrogen peroxide (200, 400 and 600 mM) and Nanosil1 (200, 400 and 600 mM) 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 (6.31g), the lowest bacterial population in stem end (87.67 Log10 CFU ml-1) and the highest petals carotenoid (17.61 mg g-1 F.W.) were related to the 400 mM 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 mM 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 mM 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 the northwestern part of Iran requires effective planning for expanding cultivation and production of this crop. Given the effect of various environmental factors on growth and yield of saffron, land evaluation process requires comprehensive spatial and descriptive information for the cultivation of this plant. Geographic Information System (GIS) allows taking advantage of this type of data and facilitates spatial analysis of collected data based on the identified models. In this study, multi-criteria decision-making (MCDM) and analytic hierarchy process (AHP) 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 criterion, 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 for growing this crop (434414.2 ha). As a result, it is recommended to cultivate saffron in the northern part of Ardabil (Moghan).

In order to study the effect of different application methods of polyamines (putrescine, spermine, spermidine) on some morphological, physiological and enzymatic traits and vase life of Rosa hybrida cv. ‘Dolce Vita’, as a factorial experiment was conducted in a completely randomized design with 32 treatments, 3 replicates and each replication containing 5 vases, amounting to a total of 480 vases. The first factor was assigned to putrescine, spermine, spermidine (50 or 100 mg/l) and the second factor was devoted to four application methods (pre-harvest spray, postharvest spray, 24 hrs pulse, and continuous). We applied two blanks in the experiment: distilled water and 3% sucrose+3 mg/l 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, superoxide dismutase enzyme activity, and vase life, were measured. The results showed that 100 mg/l Spm in pre-harvest spray method was related to the highest rates of protein, activity of phenylalanine ammonia-lyase, and superoxide dismutase enzymes.Therefore, pre-harvest spraying of polyamines can be recommended as the best way to improve morphological, physiological and enzymatic traits as well as the vase life of Rosa hybrida cv. ‘Dolce Vita’.

The objective of the present 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 (.MS), 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 were found to be significantly higher in organic growth supplement-enriched MS and.MS 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 .MS containing 1 or 2 g/L peptone. However, the longest seedling was found in MS or.MS 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: perlite.

Crown imperial have been distributed in Zagros regions in Ilam according to soil structure and organic matter. This plant has played an important role in the beautification of the environment, tourist attraction, and the supply of plant essential oils used in the production of medicines. The current research was carried out to evaluate the spatial distribution pattern of Fritillaria imperialisin Ilam (Manesht and Ghalarang regions) and to compare distance and quadrate method in 2014. Sampling program was randomsystematic just for transects with the length of 100 meters within the extent of 4300 hectares. Distance methods including t2, Hopkins, Holgate, Johnson and Zimmer and Pielou; and quadrate methods including Taylor, Iwao, Morisita, Kand CV were used to determine the spatial distribution pattern of crown imperial. Results showed that the quadrate method (Morisita andCV) and distance method (Holgate and Peilou) evaluated the spatial distribution pattern of crown imperial to be a random pattern. But, the results of quadrate methods (Taylor, Iwao, andK) and distance methods (Hopkins, t2 and Johnson and Zimmer) evaluated a clumped pattern for this species in the study area. It was shown that the distance methods outperformed quadrate methods in accuracy.Also, t2 and Hopkins indexes were the best distance methods to identify the pattern. Iwao andK indexes were the best ones among quadrate methods.Overall, it was revealed that Iwao, K, t2, and Hopkins had the highest and CV, Morisita, Holgate and Pielou had the lowest 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 such as plant height, leaf number and leaf area, flowering parameters 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 N, P and K (%) uptake in leaf were significantly affected by cultivars, media and their interactions. As the results showed, there was a significant interaction between cultivars and media for plant height and dry weight of florets where taller plants were obtained from cv. White and cocopeat: perlite at the ratio of 1: 3, while higher dry weight of florets were observed in cv. Strong and cocopeat: perlite at the ratio of 1: 3. All the studied parameters showed significant increase in the treatment containing cocopeat: perlite at the ratio of 1: 3 in both cultivars.