Roya Mousavi; Vida Chalavi; Kamran Ghasemi; Mehdi Hadadinejad
Abstract
Objective: Considering the abundant use of chemical fertilizers in agriculture and their detriments to the environment, it is necessary to consider alternatives to prevent possible damage.Methods: A completely randomized factorial experiment with four replications was conducted in the Nur country to ...
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Objective: Considering the abundant use of chemical fertilizers in agriculture and their detriments to the environment, it is necessary to consider alternatives to prevent possible damage.Methods: A completely randomized factorial experiment with four replications was conducted in the Nur country to investigate the imapct of nitroxin and vermicompost on the qualitative and functional characteristics of Blackberry. The first factor was the percentage of vermicompost at five levels (0, 10, 20, 30 and 40% by volume) and the second factor consisted of inoculation and lack of inoculation with nitroxin (Ni).Results: The results demonstrated that the highest fruit weight, number of fruits, and yield were observed at 20% vermicompost. Maximum fruit length (1.62 cm) was obtained with 10% vermicompost and nitroxin inoculation. In analyzing the biochemical traits, the highest soluble solids and taste index were observed in the 10% vermicompost treatment. The largest amount of anthocyanin was obtained in the 20 and 30% vermicompost treatments at 551 and 563 (mg/L fruit juice), respectively. The application of nitroxin along with 30% vermicompost yielded the highest amount of vitamin C among all treatments.Conclusion: The application of vermicompost at 20 to 30% levels had the best impact on the quantitative and qualitative traits of Blackberry, and in cases where high amounts of vermicompost exerted a negative effect on some traits, nitroxin was able to reduce this effect and enhance certain traits. In this assay, the application of vermicompost at 20-30% along with nitroxin demonstrated the best impacts on blackberry traits.
lale rostamian; Vida Chalavi; Hossein Sadeghi
Abstract
Salinity is one of citrus production problems in the world, and the tolerance or resistance mechanism of citrus rootstocks to salinity is not well known. In this study, the physiological responses of four citrus rootstocks, Sour orange (Citrus aurantium.L), Poncirus (Poncirus trifoliate Raf), Citromelo ...
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Salinity is one of citrus production problems in the world, and the tolerance or resistance mechanism of citrus rootstocks to salinity is not well known. In this study, the physiological responses of four citrus rootstocks, Sour orange (Citrus aurantium.L), Poncirus (Poncirus trifoliate Raf), Citromelo (Citrumelo) and Citrange (Citranges), to salinity stress was investigated in a factorial experiment based on completely randomized design under in vitro conditions. The explants were prepared from all four rootstocks and transferred in a Murashige and Skoog (MS) solid culture medium containing 8.9 μM BA and 0.5 μM NAA with different concentrations of sodium chloride (0, 50, 100 and 200 mM) in three replications. Based on obtained results of experiment, plantlets fresh and dry weight, water content, leakage and photosynthetic pigments such as chlorophyll a, chlorophyll b and carotenoid had a negative correlation with salinity concentration and concentration of sodium ion in the tissue of the leaves. Although leakage increased with increasing concentration of sodium chloride on all four rootstocks, the Sour orange rootstock statistically showed the least leakage as compared to other rootstocks. In all salinity treatments, the amount of rootstocks photosynthetic pigment reductions was statistically significant (p ≤ 0.01) as compared to the control. Among the tested rootstocks, the amount of photosynthetic pigments in the Citrange rootstock was higher than other rootstocks. In conclusion, Citrange and Sour orange rootstocks showed better resistance to the damages caused by salt stress.