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Comparative Studies on Gene Expression of Rice and Wheat in Response to Fungal Infection Полный текст
2019
Nermin Mohamed
Cereals are the foremost necessary foods for growing population of human. Wheat (Triticum aestivum) is the first important and strategic cereal crop for the majority of world’s populations. It is the most necessary staple food. Although rice (oryzae sativa) has the second place because of planted area but it serves as the most important food source for Asian countries. Wheat and rice production may be severely restricted by biotic and abiotic constraints. Disease is the major biotic stress in several regions.Comparative sequence analysis is a powerful tool to study homologous gene families, define conserved gene functions between orthologs, and identify lineage- and species-specific genes. Most annotations of newly sequenced genomes are based on similarity with sequences for which functional information is available. Apart from conserved sequences, inter-species differences provide important clues about evolutionary history and species-specific adaptations. In our study, two RNA-sequencing data sets of resistant variety of wheat (Triticum aestivum L.,) after infection with leaf rust fungus, Puccinia triticina and resistant variety of rice (Oryza sativa L.,) after infection with blast fungus, Magnaporthe oryzae were compared. 31768 up-regulated genes in wheat and 3902 up-regulated genes in rice were filtered according to fold change more than 3 and removing variants, 250 upregulated genes of wheat and rice were aligned and phylogenetic tree was generated. The result of phylogenetic tree showed close relationship between ten aligned gene pairs of wheat and rice. Two pairs of aligned gene pairs were selected randomly, super family of these pairs were obtained, the result showed that each aligned pair of proteins shared the same protein family and the same annotation and all pairs participate in plant defense pathways. Then, the gene expression of the two pairs were validated by Real-time PCR after infecting wheat with Puccinia triticina and rice with Magnaporthe grisea. Each aligned pair of the two pairs shared the same manner of expression with few exceptions in rice.
Показать больше [+] Меньше [-]EGYPTIAN DEMAND FOR FABA BEANS FROM THE MOST IMPORTANT INTERNATIONAL IMPORT MARKETS Полный текст
2019
shimaa attia | S. Makled | Shimaa Fawzy
The crops of the legumes, especially the domestic beans, are considered the most important food groups due to their high nutritional value, in addition to their importance in improving soil properties. The state aims to encourage the expansion of the faba bean production to fill the food gap and also to supply hard currency. Egypt is one of the most important importing countries for beans. The legume crops are considered the most important food groups because of the high nutritional value. The bean is a strategic commodity for the Egyptian citizen. The study aims at reducing the imports of the Egyptian faba bean. Egypt's demand for faba bean, estimation of the competitive advantage of the main exporting countries of Egypt, and the comparative advantage index. The study found that the quantity of Egyptian bean imports increased by an annual rate of about 2.41 thousand tons. This increase is statistically insignificant at 0.05 level, and the value of Egypt's imports of faba bean has taken an upward trend at an annual rate of about 7 million dollar This increase is statistically insignificant at 0.05 level, and the price of Egypt's imports of faba bean has taken an downward trend at an annual rate of about 14.5 dollar/tons This increase is statistically insignificant at 0.05 level and the study of the geographical distribution of imports of Egyptian fab beans shows that the United Kingdom, Australia and France Representing 88 % Of Egypt's imports of beans. The percentage of Egypt's imports of faba bean decreased at a growth rate of 14%. The volume of exports of the United Kingdom and France decreased by 38% and 96%, respectively, while Australia increased its exports by 5% The elasticity of demand functions also showed that the elasticity of the price demand of Australia's export price indicates that the de mand is inelastic and Egypt needs this commodity from the Australian market, and the income elasticity shows that the commodity is poor by increasing income. The explanation of the elasticity of the demand for the price of France's exports shows that the demand is inelastic and Egypt needs this commodity from the French market. It is also evident from the income elasticity that the commodity is normal, i.e., the increase in income is the required quantity of the commodity, while the elasticity of the price demand of the UK export price shows that demand is not Flexible and Egypt needs this commodity from the British market, as evidenced by the income elasticity that the commodity is poor by increasing the income decreases the required quantity of the commodity. The study of forecasting Egypt's imports of Australian beans shows that the volume of imports of beans is expected to increase from about 136 thousand tons in 2018 to about 245.6 thousand tons in 2025. It is expected that the quantity of imports of British beans will increase from about 58 thousand tons 2018 to about 277.3 thousand tons in 2025. It is expected that the quantity of imports of French beans will fall from about 0.334 thousand tons in 2018 to about 45.9 thousand tons. It is also expected that the quantity of Egyptian imports of beans will increase from about 410 thousand tons in 2018 to about 500 thousand tons in 2025, is expected to decrease the amount of domestic production of beans from about 144 thousand tons in 2018 to about 16 thousand tons And it was found that the available amount of consumption is expected to decrease from about 281 thousand tons in 2018 to about 72.5 thousand tons in 2025.
Показать больше [+] Меньше [-]ANALYSIS OF THE EXTERNAL DEMAND FOR EGYPTIAN ORANGE EXPORTS USING ALMOST IDEAL DEMAND SYSTEM Полный текст
2019
Amr Ewida | M. Nasr | H. Sarhan
The agricultural foreign trade sector is one of the most important sectors that have a direct impact on the economic development programs. Oranges occupy the first place among Egyptian citrus varieties, with Egyptian production of about 3.014 million tons representing about 70.4% of the total citrus production of 4.3 million tons (2012-2016). Its productive area reached 294.5 thousand feddans representing about 68% of the total area of citrus fruits, which amounted to about 433 thousand feddans during the same period. The problem of the study is the volatility of the quantity of Egyptian exports of oranges during the period of study (2000-2017), which made the Egyptian exports of oranges face great competition from many countries in foreign markets, which may lose them in their foreign markets and allow the competition to win these markets, The available statistics indicate that the average production of Egyptian oranges was about 2.6 million tons as an average for the period 2005-2017. However, the quantity of exports is only 23.5% of this production. The objective of the research is to analyze the structure of the demand for Egyptian exports of oranges by achieving two main objectives: The first aims to study the development of Egyptian exports of oranges and the main importing countries. The second deals with estimating the price and cross price elasticities through the almost ideal demand system for Egyptian orange. The research was based on the use of descriptive statistical analysis in the presentation and characterization of export prices of Egyptian orange, and the variables of quantities and prices of the most competitive countries in each of the studied markets, The econometric analysis was used to estimate the market model of the demand for Egyptian oranges in each of the markets studied using the Linear Almost Ideal Demand System (LAIDS) model. The research was based on UN.org data. Comtrade http: //, Ministry of Agriculture and Land Reclamation, Central Agency for Public Mobilization and Statistics (2005-2017), as well as some scientific references related to the subject.
Показать больше [+] Меньше [-]CURRENT DEMAND FOR WATER RESOURCES IN EGYPTIAN AGRICULTURE Полный текст
2019
M. Ibrahim | S. Makled | A. Elsabea
Water is one of the most important inputs and elements of development, and the importance of water in Egypt is increasing due to the lack of resources and increased demand in recent periods, where rain is scarce and covers most of its deserts. The River Nile is the main water supplier in the Arab Republic of Egypt, where the share of the river about 55.5 billion cubic meters per year, and the problem is limited to the study of the current and future use of water, while Egypt suffers from the constant amount of water available to cover these uses, The high rates of Egyptian population growth, with Egypt's share of water remaining constant, and hence the problem of water shortage, is a threat to the national economy in general and the agricultural sector in particular. The aim of the study is to use water for the time being and to work to increase the efficiency of water use in future years The study shows that the quantities of water used in irrigation for agricultural crops in Aswan fluctuated between the minimum and the decrease, ranging between a minimum of about 40.1 billion m3 in 2012 and a maximum of about 62.1 billion M3 in 2008 with an annual average of about 50.48 billion m3 during the same period. And the study of the equation of the general time trend for the quantities of water used for irrigating agricultural crops in Aswan and it shows that there is no mathematical picture suitable for the nature of the data and that the data revolve around the mean arithmetic.
Показать больше [+] Меньше [-]Optimization of Poly-β-Hydroxybutyrate (PHB) Production by an Egyption strain of Rhizobium fabae F44 using Response Surface Methodology Полный текст
2019
Wafaa Radwan | Samah Abu Hussein | Mahmoud Nassef | Sawky Selim
The present work is aimed to isolate, purify, identify a newly isolate Rhizobium fabae from different regions in Egypt then, produce and optimize Poly-β-Hydroxybutyrate polymer (PHB) production by the selected isolate Rhizobium fabae F44 using a statistical approach of response surface methodology (RSM). Rhizobium fabae F44 isolate was picked up from Sharkia Governorate in Egypt and then identified by the 16SrRNA gene as Rhizobium fabae. Eleven different variables which affect the production of PHB polymer were screened by Plackett–Burman statistical design approach. Maximization of PHB production was adjusted by the terms of The Face Central Composite Design (FCCD) of RSM and assessed at three coded levels (–1, 0, +1). One way Anova was used to statistically analyze all obtained results in relation to post hoc multiple comparison analysis performed by Tukey’s HSD. Appulses of nutritional and physical factors (two carbon sources, two nitrogen sources, mineral salts, pH, temperature, incubation time, inoculum size and agitation rate) were studied using Plackett-Burman design method. 58 isolates were obtained from the different 9 governorates with 100 % infection plant technique. The 16SrRNA showed a similarity of 99.56 (%) to Rhizobium fabae F44. Out of all tested significant media components, sucrose, yeast extract, agitation rate had the highest significant effects on the response as for PHB production, with confidence level > 98% and were further optimized using FCCD. Predicted Maximum PHB production was observed as (78.51%) which in near the mid-point (0) values (concentrations) of sucrose which reached (25 g/l) and yeast extract of (0.5 g/l) for 48 hrs. at 150 rpm agitation rate. The observed experimental value reached 87.5u/ml was very close result to the predicted one validating the model. So, Response Surface Methodology is an effective statistical approach which can substitute the use of one variable at a time approach due to its adequacy and efficiency to optimize PHB production by Rhizobium fabae F44.
Показать больше [+] Меньше [-]EFFECT OF GRINDING AND PARTICLE SIZE ON SOME PHYSICAL AND RHEOLOGICAL PROPERTIES OF CHITOSAN Полный текст
2019
Ibrahim Ibrahim | Hamdy Ebeid | Yasser Kishk | Abdel Fattah Abdel Fattah | Khaled Mahmoud | A. Ibrahim | H. Ebeid | Y. Kishk | A. Abdel Fattah | K. Mahmoud
The present study was conducted to prepare nano-chitosan particles (CN) by ultrafine grinding from crude chitosan powder (CC) using a ball mill with 130 numbers of zirconia beads in range from 0.5 to 1.5 mm diameter (75 beads 0.5 mm diameter, 30 beads 1.0 mm diameter and 25 beads 1.5 mm diameter). In addition, physical and rheological properties of chitosan solutions were determined. The results revealed that ultrafine grinding has effectively milled the chitosan particles to nanoscale. Prepared chitosan nanoparticles were characterized by devices X-Ray Diffraction (XRD), Zetasizer particle sizes and Zeta potential of chitosan particles (after milling for 30, 60 and 90 minutes). The particle size of nano-chitosan was distributed in a range of 250-600 nm. with a polydispersity index use as an anti-oxidant and antimicrobial with reducing the amount used to deliver the desired purpose. Additional research is required to further investigate the potential value-added utilization of these chitosan derivatives in improving the quality and safety of some food products.
Показать больше [+] Меньше [-]ADDING PROBIOTICS TO RATIONS OF FATTENED CROSSBRED FRIESIAN CALVES AND ITS INFLUENCE ON CALVES’ PERFORMANCE Полный текст
2019
Waael El-Desokey | mohamed abdraboh | Hamdy Mossa | Hany Gado
As the impact of upcoming climate change scenarios on livestock feeding security (quality, availability, and price), applying alternative feedstuffs is a must. Fattening calves considered as a most process related to traditional feeding system. In the present study we purposed new feedstuffs for fattened calves consisting citrus pulp silage, wheat germ, barley sprout and molasses. Within the above feedstuffs we using mechanical, chemical, and biological treatments. Moreover, the present study evaluates the production performance of 14 male cross Friesian calves (7 per each group) for adding 10ml/calve/day probiotic ZAD in treated group. Weight data where used to calculate Average Daily Gains ADG, nutrients digestibility, boneless meat percent, and feed conversion rate. From our results applying probiotics (ZAD) increased significantly (P<0.05) ADG in the hall fattened period by 1.011±0.107 kg/calve/day and 0.886±0.107kg/calve/day, also, increased the percent of boon less meat from 51.097±1.140 % and 44.410±1.518% in the treated control group respectively. Applying probiotic increasing significantly (P<0.05) digestibility of nutrient detergent fiber and acid detergent fiber by 42.853±7.092 and 54.010±3.774 in treated group compared with 25.180±7.902 and 37.679±3.774 respectively. Based on the results of the present study concluded that the effect of probiotic treatment on feed conversion rate of intake nutrients showing significant different (P<0.05) in Total Intake of Digestible Nutrients TDNI was higher in control group (4.579) compared with treated group (3.305). However, Dry Matter Intake DMI and Crud Protein Intake CPI tended to be higher in control group compared with treated group. In conclusion applying probiotics in agriculture byproduct silage in presence of sprout, molasses and wheat germ results in improving in nutrients digestibility, growth performance, and feed conversion rate of fattened calves. Based on our results we recommend such feeding system as a solution in calves' meat production to facing the upcoming climate change scenarios (i.e. direct and indirect effects on livestock sector.
Показать больше [+] Меньше [-]DEVELOPMENT AND EVALUATION OF NOODLES PREPARED FROM RICE AND WHEAT FLOUR BLENDS Полный текст
2019
Maghfera abd-elfatah | Mamdouh El kalyoubi | Ihab Ashosh | Mohamed Mostafa
Noodles were prepared by incorporation varying blends (0, 20, 40, 60 and 80%) of rice flour in replacement of wheat flour. Noodle samples were evaluated for their proximate composition, scavenging activity, sensory properties and cooking quality characteristics. The proximate composition of uncooked noodles varied significantly, with increasing rice flour level that replaced wheat flour , a gradual decreases in moisture , ash , crude fiber and protein contents in noodle pastes were occurred , their values ranged between 4.02-5.33% ; 1.11-5.22% , 0.65-0.82% and 8.51-12.81% ,respectively. However, an increases in fats, total carbohydrates and energy value were take place ranging between 4.62-8.91 % , 71.11-76.74% and 377.64 - 421.43 kcal/100g, respectively .The antioxidant activity ranged between 22.2% for wheat based noodle (100% wheat flour) to 36.8% for sample containing 80% rice flour as scavenging activity for free radicals. The overall acceptability of wheat-based noodles (WF: RF 100:00) were rated superior for their sensory preferable characteristics. Among the blended flour noodles, the noodles incorporated with up to 40% rice flour received the same acceptability as wheat-based noodle. The cooking quality characteristics differed significantly among the noodle samples; the cooking time ranged from 6.5 to 10.3 min, it was more in wheat-based noodles than noodles from rice flour. Cooking loss; water absorption percent; cooked weight and swelling index values ranged from 0.1 to 0.6%, 137.1 to 231.6%, 23.74 to 33.24 g/g and 3.20 to 5.38 %, respectively; which revealed that a significant hindered was occurred in the functional paste properties and cooking quality parameters with increasing the level rice flour in noodles. The study indicated that, noodles prepared from mixtures of wheat and rice flour showed that the best acceptable sensory attributes and cooking quality characteristics were observed at blending ratio 40 : 60% rice flour : wheat flour . These findings enhance the utilization of non- conventional flours like rice flour for the development of value added noodles with reduced gluten content and boost nutritional value.
Показать больше [+] Меньше [-]FROZEN VEGETABLE MARKET Полный текст
2019
Fatma Saad | M. El-Eraqy | Salwa Abdel Monem
Facing the food industry in Egypt, the challenges of external and internal negative impact on their competitiveness and access to global markets and the study showed that the number of enterprises operating in this sector amounted to about 37.7 thousand that run around 357 thousand workers. It also represents the food exports of approximately 31.7% and 14.3% of the total value of exports of industrial goods and the College Rankings 2016, the average annual value of the products of that sector, about 21.4 million pounds, accounted for about 31% of the value of industrial production for the same year. The research problem was the small size of the internal and external markets of frozen Egyptian vegetables. Despite the increasing global demand for frozen products, Egyptian exports do not increase at the expected rate. The rate of increase in global demand for frozen food products exceeds 510% annually, Compared to its Egyptian counterparts. The study aimed at studying the internal and external markets of Egyptian frozen vegetables. The study aims at identifying the economic characteristics of the local market for frozen vegetables in general, and in particular for the field sample of vegetable freezing plants and processing them in addition to the internal markets for marketing these vegetables. Prices, categories and consumer attitudes towards them. The study was based mainly on the available and available data published and unpublished by government agencies such as the Central Administration of Agricultural Economics in the Ministry of Agriculture and Land Reclamation, the General Organization for Industrialization, the Chamber of Food Industries in the Federation of Industries, the Commodity Council for Food Industries, the Holding Company for Food Industries, the Commercial Representation Authority, General for Export and Import Control, as well as foreign trade base data at the National Information Center of the Central Agency for Public Mobilization and Statistics. And the most important results as follows that the difference between the prices of the products, vegetables, frozen for different companies in Super accumulator different varieties where ranked Alabama to buy smile from the above parties between the varieties by about 71% of the total parties the company has a smile, and then are classified Mallow estimated at around 14.8 % of the total group has a company-Bessemer, as expected from the results I classified the grape of the biggest differences between varieties increased by approximately 26.7% of the total team purchase Montana, the following varieties of spinach increased by approximately 24.4 % of the total group company Montana.
Показать больше [+] Меньше [-]AN ECONOMIC STUDY OF SOME BROILER FARMS IN QALUBIA GOVERNORATE Полный текст
2019
Mahmoud Salem | Thanaa Elnoby | Eman Kadous
The poultry industry in Egypt is one of the most important industries that contribute in providing the source of animal protein, which is characterized by high nutritional value, cheap price and high conversion coefficient of food compared to red meat. This industry is characterized by several characteristics, the most important speed of turnover of capital as well as not need a large agricultural patch, In addition to the relative increase in food conversion efficiency compared to other types of animals. The industry is also characterized by high return and low capital required to invest in this field compared to other productive projects. The problem of research is the high price of the prices of the inputs of the production of poultry and the low quality of the market, and fluctuation of market prices of the final output, which affects the revenue and thus affect the size of the economic project. Therefore, the study aimed at estimating the economic yield of the poultry farms in the fattening nurseries in Qalyubia governorate. These farms are characterized by a short cycle of the capital cycle in order to contribute to raising the level of individual income in the rural sector. It also provides job opportunities for young people. Of the animal protein, and based on published data and the use of field study for a sample of the municipality of Qalyubia, the research reached some results, including: 1- The average number of farms of broiler fattening was about 1.6 thousand farms by 6.67% of the total number of farms at the level of the province of Qalyubia. 2- The study of the most important problems and obstacles facing the poultry growers found that the problems of production and marketing were the high prices of chicks used in fattening, lack of quality chick, high feed prices, the lack of trained labor, the problem of control of traders and brokers in price, and the problem of irregular market price . 3- By dividing the sample of the study into three production capacities, it was found that the net yield of the first capacity (12.9-6 thousand birds) amounted to 308.9 thousand pounds / cycle, and net return of the second capacity (less than 6 thousand - more than 3.6 thousand birds) LE 323.2 thousand / cycle, while it amounted to about 274.1 thousand pounds / cycle for the third capacity (3.6 - 0.8 thousand birds). 4- The estimated profitability of the pound for the investor for the three capacities (first, second and third) was respectively 1.05, 1.12, 1.31 thousand pounds.
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