Roya Mousavi; Vida Chalavi; Kamran Ghasemi; Mehdi Hadadinejad
Abstract
To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, ...
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To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, 30 and 40) and the second factor was the level of inoculation and non-inoculation with nitroxin (Ni). The results showed that the treatments had a significant effect on the studied traits. The highest fruit weight, number of fruits, and yield was observed in 20% vermicompost. Maximum fruit length (1.62 cm) obtained in 10% vermicompost and nitroxin inoculation. The highest fruit diameter was obtained in 30% vermicompost. Also, in biochemical parameters, the application of 10% vermicompost produced the most soluble solids and flavor index. The highest amount of anthocyanin at 551 and 563 (mg/L fruit juice) was obtained respectably in 20 and 30% vermicompost treatments. Application of nitroxin along with vermicompost yielded 30% of the most vitamin C. In general, the results showed that the application of vermicompost at levels of 20 to 30% has the best effect on the quantitative and qualitative traits of blackberry and nitroxin can reduce the negative effect of high vermicompost and increase the effect of vermicompost on the blackberry plant.
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.