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Sarabi Hamzeh Jafari Pilehvar Babak Vajari Kambiz Abrari Waez-Mousavi Seyed Mohammad 《European Journal of Forest Research》2021,140(6):1377-1390
European Journal of Forest Research - Many studies have been conducted on the effects of changes in plant diversity and species composition on ecosystem functioning and plant productivity due to... 相似文献
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Nasab K. Rawashdeh Nasri I. Haddad Mohamad M. Al-Ajlouni Munir A. Turk 《Genetic Resources and Crop Evolution》2007,54(1):129-138
Durum wheat landrace genotypes are disappearing from the main wheat areas in Jordan, because of spreading of new uniform cultivars
and the serious reduction in wheat cultivation. This study was conducted to evaluate genetic diversity in durum wheat landraces
from Jordan and to identify desirable agronomic traits. Landraces were collected from two target areas: Ajloun and Karak.
The collected material was grown under rainfed conditions using an augmented design with five blocks and four repeated check
cultivars. Data were collected for 14 morphological and agronomic traits. Phenotypic diversity index (H′) was estimated, and
the relationships among accessions were measured using cluster analysis and dendrogram similarity matrix. The results revealed
the presence of a wide range of variability among landraces., which possess high levels of variability for biological yield,
fertile tillers, number of seeds per spike, seed weight per spike and weight of 1000 seeds. These landraces must be considered
as a reservoir of genes that plant breeders need in their wheat improvement programs and should be conserved both ex situ and in situ. 相似文献
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One goal in the face of drought stress conditions is to increase growth and yield through the reduction of negative effects of stress. Vermicompost can play an effective role in plant growth and development and in reducing harmful effects of various environmental stresses on plants due to its porous structure, high water storage capacity, having hormone-like substances, plant growth regulators, and high levels of macro and micro nutrients. This study considered the physiological, biochemical, and photosynthetic responses of the chickpea to different combinations of vermicompost and water stress in a greenhouse environment. Two factors were involved, addition of vermicompost to soil at four ratios: control (100 wt% (weight percentage) soil); 10 wt% vermicompost+90% soil; 20 wt% vermicompost+80 wt% soil; 30 wt% vermicompost+70 wt% soil weight percentage, and treatment of water stress at three levels including 75, 50, and 25% of field capacity. The results showed that vermicompost had a significant effect on all traits under stress and non-stress conditions. Application of vermicompost in soil, especially at the levels of 20 and 30 wt% significantly increased all studied traits under non-stress conditions. Under moderate stress conditions, vermicompost at 30 wt% treatment resulted in a significant increase in the photosynthetic pigments, CO2 assimilation rate, internal leaf CO2 concentration, transpiration, the maximal quantum yield of photosystem II (PSII) photochemistry (Fv/Fm), concentrations of Ca and K in root and leaf tissues, proline and soluble protein contents in root tissues. Peroxidase (POX) and catalase (CAT) enzyme activities decreased significantly with increasing proportions of vermicompost, but the activity of superoxide dismutase was not significantly different. In conclusion, the above results showed that vermicompost fertilizer had a positive effect on physiological, biochemical, and photosynthetic responses of chickpea under non-stress and moderate stress conditions, but no positive effect was determined under severe water stress. 相似文献
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Ali Hamzeh 《Journal Of Aquatic Food Product Technology》2013,22(1):14-21
Edible coating is a novel food packaging technology for controlling the growth of spoilage bacteria and chemical changes in ready-to-eat food products. Fresh fish are highly perishable foodstuffs and are very susceptible to spoilage. A sodium alginate coating was used to maintain the quality of rainbow trout fillets in chilled storage over a period of 20 days. Fillet samples were coated with an aqueous solution of 3% sodium alginate and then stored at chilled temperature (4 ± 2°C). The control and coated samples were analyzed periodically (every 5 days) for microbial (aerobic plate count and psychrotrophic count), chemical (total volatile basic nitrogen, thiobarbituric acid, peroxide value), and sensory characteristics. The results indicated that the sodium alginate coating helped protect the quality characteristics of treated fresh fish fillets and prolonged the shelf life during chilled storage of rainbow trout fillets. 相似文献
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Hamzeh Amiri Ahmad Ismaili Saeed Reza Hosseinzadeh 《Compost science & utilization》2017,25(3):152-165
One goal in the face of deficit water conditions is to increase growth and yield. Agro-industrial production frequently causes environmental pollution by using chemical fertilizers. In recent decades, bio-fertilizers such as vermicompost have been used as a safe alternative to chemical fertilizer. The present study considered the response of the chickpea to different combinations of vermicompost and water deficit stress in a greenhouse environment. Plant response was determined by measuring a range of morpho-physiologic parameters. The treatments were addition of 0%, 10%, 20%, and 30% of vermicompost to soil, and water deficit stress at the following levels: non-stress (100% of field capacity), moderate water stress (75% of field capacity), and severe water stress (25% of field capacity). The results showed that vermicompost had a significant effect on all traits under stress and non-stress conditions. The vermicompost treatments under non-stress conditions significantly increased plant height, number of pods, leaf area, stem and leaf dry weight, pod dry weight, chlorophyll a, carotenoid, total chlorophyll content, CO2 assimilation rate, internal CO2 concentration, and water-use efficiency over that of the control condition. The addition of 30% vermicompost under moderate and severe water stress conditions significantly increased plant height, number of pods, leaf area, leaf dry weight, carotenoids, and water-use efficiency over that of the control level. This study confirmed that vermicompost improved the morphological features, soil biological activity, and quality of the chickpea, but did not positively influence the physiological features under moderate and severe water deficit stress. 相似文献
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Memory processes are modulated by the biological clock, although the mechanisms are unknown. Here, we report that in the diurnal zebrafish both learning and memory formation of an operant conditioning paradigm occur better during the day than during the night. Melatonin treatment during the day mimics the nighttime suppression of memory formation. Training in constant light improves nighttime memory formation while reducing endogenous melatonin concentrations. Treatment with melatonin receptor antagonists at night dramatically improves memory. Pinealectomy also significantly improves nighttime memory formation. We adduce that melatonin is both sufficient and necessary for poor memory formation during the night. 相似文献
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Ali Hamzeh Saber Khodabandeh Ali Motamedzadegan Mehrdad Noruzinia Joe Mac Regenstein 《Journal Of Aquatic Food Product Technology》2019,28(4):392-401
Persian Gulf cuttlefish mantles were hydrolyzed (CPH) using alcalase, and the optimal hydrolysis parameters were obtained for the highest degree of hydrolysis (DH) and strongest antioxidant (based on their ability to quench 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals) activity using response surface methodology (RSM). The predicted optimal parameters of DH and quenching DPPH radicals was: pH of 7.88, 50.2°C, 150 min, and enzyme to substrate ratio of 1.5%. The reducing power (RP) and ability of optimized peptides to quench ABTS radicals in a gastro-intestinal track model system increased during the intestinal stage, while scavenging ability against DPPH radicals dropped (P < 0.05). The oxidation of lipid was retarded in a lecithin-liposome model added with optimized CPH in a concentration dependent response. Ultrafiltration of optimized CPH showed that the 3–10 KDa fraction had the greatest DPPH radical scavenging activity, the 10–30 KDa fraction had the highest reducing power, and the <3 KDa fraction had the greatest ABTS radical scavenging activity. 相似文献
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Z.A. Bani Ismail A.M. Al‐Majali F. Amireh O.F. Al‐Rawashdeh 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2008,37(4):434-437
Background: Pregnant goat does can develop various metabolic diseases during late pregnancy that may have profound effects on their health and productivity, including subclinical pregnancy toxemia. Objectives: This study was performed to evaluate serum biochemical findings in goats in late pregnancy with and without subclinical pregnancy toxemia. Methods: Serum samples were obtained from 153 clinically healthy goats in the last trimester of pregnancy from 14 herds in central and northern Jordan. Serum was analyzed for the following constituents: 3‐hydroxybutyrate (3‐HB), glucose, total protein, albumin, urea, creatinine, aspartate aminotransferase, alkaline phosphatase, cholesterol, triglycerides, cortisol, T3, T4, total calcium, magnesium, and phosphorus, using commercially available kits. Goats were classified as having subclinical pregnancy toxemia or as controls on the basis of 3‐HB results. Biochemical results were compared between the 2 groups using nonparametric statistical tests. Results: Fifty‐three does had subclinical pregnancy toxemia (3‐HB>0.86 mmol/L) and 100 were pregnant control does (3‐HB≤0.86 mmol/L). Does with subclinical pregnancy toxemia had significantly lower glucose concentrations (P<.001) and significantly higher urea (P=.042) and total protein (P=.048) concentrations compared with pregnant control does. 3‐HB concentration was significantly correlated with glucose (r=0.290, P=.035), phosphorus (r=0.351, P=.01), and cortisol (r=0.394, P=.004) concentrations in goats with subclinical toxemia. Conclusions: Results of this study indicate that the biochemical profile of does with subclinical pregnancy toxemia differs from that of other pregnant goats. 3‐HB should be measured in pregnant does in late stages of gestation with hypoglycemia or with elevated urea and total protein concentrations. 相似文献
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Shabnam Hamzeh Seyed-Ahmad Shahidi Mohammad Ahmadi Joe Mac Regenstein 《Journal Of Aquatic Food Product Technology》2013,22(7):794-805
ABSTRACT The effects of drying parameters on moisture content, water activity, bulk density, water binding capacity (WBC), oil absorption, and color parameters (L*,a*, b*) of foam-mat dried shrimp powders were investigated. Shrimp purees were dried as a foam mat at different drying temperatures (50ºC, 60ºC, and 70ºC) and thicknesses of the foam layer (4 and 8 mm). The experimental results showed that as the temperature increased, the moisture content, water activity, and oil absorption of the samples decreased. However, their solubility increased significantly (P ?0.05). Bulk density of shrimp powder increased with increasing the thickness of the foam layer. Increasing temperature led to increased and decreased WBC with 4 and 8 mm thickness, respectively. Furthermore, the a*, b*, and L* (at 8 mm thickness) decreased with increasing temperature; however, L* increased at 4 mm thickness. Fourier transform infrared (FTIR) spectra showed some major shifts, such as in the region of 1000–1700 cm?1, related to C–O, C–O–C, and C–H band stretching. The differential scanning calorimetry thermograms showed a large peak with a denaturation peak around 72ºC for shrimp proteins. 相似文献