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Showing 2 results for miri
Atiyeh Oraee, Mahmoud Shoor, Toktam Oraee, Mahboobe Miri, Mahdieh Eisaei, Simin Atarazadeh, Samane Khoshangosht, Narges Harati, Seyed Ali Assaran,
Volume 8, Issue 2 (Fall and Winter 2023)
Abstract
Increasing the marketability of cut flowers is very important from an economic point of view and alstroemeria cut flowers are considered as one of the most important cut flowers in Iran and worldwide. To investigate the effect of different concentrations of sodium nitroprusside (0, 50, and 100 μM) and thymol (0, 50, and 100 mg L -1) on the morpho-physiological traits of alstroemeria, a factorial experiment was conducted based on a completely randomized design. The longest vase life (16.3 days) was observed in the treatment with 100 µM sodium nitroprusside with or without thymol. In the treatments without sodium nitroprusside, no changes were observed in flower longevity with increasing thymol concentration. The interaction effects of sodium nitroprusside and thymol on relative fresh weight on days 5, 7, 9, and 13 and solution uptake were significant in all days. For the treatments with 50 and 100 µM sodium nitroprusside along with 50 mg L-1 thymol, there was an upward trend in solution absorption and relative fresh weight until the fifth day and a downward trend thereafter. The lowest value for relative fresh weight and solution absorption was observed in the control treatment. The highest values of chlorophyll a (0.16 mg L-1), chlorophyll b (0.078 mg L-1), and total chlorophyll (0.238 mg L-1) were observed in the 100 µM sodium nitroprusside and 50 mg L-1 thymol treatments. In the treatments with 100 μM sodium nitroprusside without or with thymol, the lowest amount of bacteria (3.51-62.3 log10 CFU/ml) and the highest amount of this indicator (3.88 log10 CFU/ml) was detected in the control treatment. No significant difference in dry weight was observed in the treatments without sodium nitroprusside and 50 μM sodium nitroprusside with increasing thymol concentration, but the highest amount of dry weight was observed in the treatment with 100 μM sodium nitroprusside and 50 mg L-1 thymol. The results of this experiment suggested the use of 100 μM sodium nitroprusside with or without thymol to extend vase life and reduce chlorophyll degradation in alstroemeria cut flowers.
Fereshteh Sahraie, Zohreh Jabbarzadeh, Jafar Amiri,
Volume 9, Issue 1 (Spring and Summer 2024)
Abstract
Alstroemeria is considered one of the most important and popular ornamental cut flowers in the global flower and plant markets due to its beautiful flowers and wide variety of colors The purpose of this study was to investigate the effects of fulvic acid application on the morphological characteristics of Alstroemeria and to determine its appropriate concentration to improve growth and flowering characteristics as well as absorption of leaf elements. Alstroemeria (Alstroemeria aurea 'Orange Queen') was used for this research. The experiment was conducted based on a completely randomized design using fulvic acid at concentrations of 0, 50, 100, and 200 mg/L at intervals of two weeks for four months with three replications and each replication including two pots. The growth medium of the plants in the greenhouse was a mixture of perlite and cocopeat in a ratio of 1:3. During the period of growth and flowering of plants, a nutrient solution was used in the culture medium. It should be mentioned that in different stages of growth, the temperature of the greenhouse was 10-13/16-18ºC (day/night). At the end of the research, morphological indicators such as leaf number, leaf area, length of flowering stem, number of florets, length, and diameter of florets, and the amount of some elements such as nitrogen, phosphorus, potassium, iron, and zinc were measured. The results showed that the concentration of 100 mg/L of fulvic acid was able to create a significant difference in increasing the number and surface of leaves compared to the control and other concentrations of fulvic acid. Application of all concentrations of fulvic acid caused a significant increase in the number of florets compared to the control. In this study, the concentration of 100 mg/L of fulvic acid increased the flower diameter of Alstroemeria by 1.4 times compared to the control. The maximum floret length was observed in the concentration of 100 mg/L of fulvic acid and the lowest floret length was observed in the control. The concentration of 100 mg/L of fulvic acid could increase the length of the flowering stem by 1.6 times compared to the control. The lowest amount of phosphorus in Alstroemeria leaves was observed in the control and the highest amount of phosphorus was observed in the concentration of 100 mg/L of fulvic acid. In general, using fulvic acid had a positive effect on the measured characteristics. In this research, concentration of 100 mg/L of fulvic acid was more effective than the other concentrations.
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