جستجوی مقالات مرتبط با کلیدواژه « Ocimum basilicum L » در نشریات گروه « باغبانی »

To investigate the role of putrescine and 24-epibrassinolide on the morphophysiological changes of Ocimum basilicum L. in the water deficiency tolerance, an experiment was conducted as a factorial split plot in a randomized complete block design with three replications in the research farm of Agriculture Faculty, Ilam University during 2017-19 crop years. The experimental treatments included the drought stress at three levels (40, 80, and 120 mm evaporation from Class A evaporation pan) in the main plots and putrescine foliar application at three levels (Put0: 0, Put1: 0.5, and Put2: 2 mM) and 24-epibrassinolide foliar application at three levels (Br0: 0, Br1: 0.5, and Br2: 2 μM) factorially in the subplots. The results showed that the multiple interaction of year, drought stress, putrescine, and 24-epibrassinolide had a significant effect on the traits including chlorophyll a, chlorophyll b, and basil essential oil percentage, so that the foliar application of 2 mM putrescine and 2 μM 24-epibrassinolide at all levels of drought stress, especially 80 mm evaporation from the evaporation pan, caused a further increase in these traits in both years of the experiment, which was higher in the first year than the second one. The optimal irrigation treatment (40 mm evaporation from evaporation pan) with application of 2 mM putrescine and 0.5 μM 24-epibrassinolide and drought stress treatments (80 and 120 mm evaporation from evaporation pan) with application of 2 mM putrescine and 2 μM 24-epibrassinolide had more leaves and secondary branches. The results of this study showed that the drought stress had an important role in reducing the basic factors in basil growth. In general, according to the results obtained, the foliar application of 2 mM putrescine with 2 μM 24-epibrassinolide to improve the physiological activities and increase the essential oil content, and 2 mM putrescine with 0.5 μM 24-epibrassinolide to increase the seed yield could be recommended in basil under drought stress conditions.

In order to evaluate the effects of drought stress on quantity and quality of yield, physiological characteristics, and essential oil of Ocimum basilicum L. and Ocimum americanum L., a factorial experiment was carried out in a randomized complete block design with three replications in greenhouse condition. Drought stress treatments consisted of control (without drought stress), 80, 60, and 40% of field capacity on two species of Ocimum. The traits measured were fresh and dry weights, essential oil, essential oil performance, carbohydrates, proline, nitrogen, protein, phosphorus and potassium contents. The results indicated that with increasing levels of drought stress from control to 40 percent of field capacity, the content of essential oil, carbohydrates, and proline were increased (28, 46, and 50%) in both species. However, the content of fresh and dry weight, essential performance, nitrogen, protein, phosphorus and potassium were reduced (57, 57.8, 44, 19, 16, 39 and 23%). In O. americanum, the content of fresh and dry weight, carbohydrate, proline, nitrogen, phosphorus, and protein were significantly increased under drought stress; while in O. basilicum, only essential oil content showed higher values significantly. It was observed that the majority of growth factors had the highest performance under low stress (80% of field capacity). Essential oil content, on the other hand, increased significantly under high stress condition, so that in O. basilicum, the highest essential oil content was obtained at 60 percent of field capacity. Our findings indicated that the plant performance and essential oil content were increased under average and moderately severe stress conditions, respectively.

Sweet basil (Ocimum basilicum L.) belongs to the Lamiaceae family. Sweet basil essential oil is used in food، medicine، and hygiene industries. In this study، the effect of different concentrations of nano iron chelate fertilizer (1، 3، 5 Kg. ha-1) and iron chelate fertilizer (1. 5، 4. 5، 7. 5kg. ha-1) on the quantity and quality of O. basilicum essential oil (EO) were investigated. The experiment was conducted in a completely randomized design with four replications in a farm located in Saveh. After collecting the aerial parts of O. balilicum، the EO was extracted via water distillation method. Then، the EO was analyzed by GC and GC/MS. Sixteen components were identified in the EO of O. basilicum. The major components were methyl chavicol (37%)، geranial (26%)، neral (21%) and caryophyllene oxide (3. 5%)، respectively. Among different treatments، the means of 10 components showed significant differences. The mean of EO percentage in all samples، treated by Fe and nano Fe fertilizers، was more than that of control.

In order to evaluate soil fertilization systems on yield quantity and quality of basil (Ocimum basilicum L.)، this study was conducted as a field experiment in Shahrerey Islamic Azad University in 2011. The experiment was conducted in split plots in time based on completely randomized block design with three replications. The treatments were various levels of chemical fertilizers (N-P-K)، different levels of manure، mixture of different ratios of fertilize and manure and without fertilizer and manure (control). Two harvests were arranged in main plots and 16 levels of fertilizer were assigned to the sub plots. According to the results، the highest amount of dry yield (2442 kgha-1) was obtained in second harvest and in intermediate treatment (25 tonha-1 of manure mixed with N=80، P=64 and K=80 kgha-1 of chemical fertilizers). Results showed that the intermediate treatment (10 tonha-1 of manure mixed with N=120، P=96 and K=120 kgha-1 of chemical fertilizers) in second harvest produced the highest amount of essential oil (0. 69%). The results suggest that the use of organic fertilizer alone or in combination with chemical fertilizers has a positive effect in improving the yield quantity and quality of basil.

Since Ocimum basilicumL. is used as a traditional herbal medicine, this study was carried out to evaluate the effect of aqueous and metanolic extract of Ocimum basilicum leaf on blood glucose, lipid profiles and liver enzymes in fructose-fed male rats. The experiment was performed on 32 Wistar-Albino rats including one control group (A) and three tests groups (B, C and D). Test groups consumed fructose-enriched water and received zero and 20mg/kg aqueous and metabolic extract daily and respectively for 60 days but control group consumed tap water in treatment duration. At the end, serum glucose, insulin, liver enzymes and lipid profile were measured. The obtained data were analyzed by ANOVA and Tukey tests. Results were expressed as mean ± SE and significant differences were found at 0.05% level of probability. Our findings showed that insulin resistance index, insulin and FBS in tests groups significantly increased compared with those of group A; however, serum insulin value in group D significantly increased compared with that of group B and C. On the other hand, AST (aspartate aminotransfrase) and ALT (alanine amino transferase) values in group D significantly decreased compared with those of the B and C groups. Also, the value of LDL in group C was significantly lower in comparison to other test groups. The results of this study showed that consumption of Ocimum basilicumleaf extract had an effect on LDL and liver enzymes in fructose-fed male rats.