- Turkey, Denizli, Pamukkale University, Biology Dept., Prof. Ali Çelik
Eman I S M A E I L Elsarag
Arish University, Plant Production Dept., Faculty Member
- Suez Canal University, Agronomy, Faculty Memberadd
Research Interests:
Research Interests:
Water and nitrogen deficits are the most important environmental factors greatly limiting crop production and plant distribution worldwide, especially in semi-arid regions. Two field experiments were conducted during 2009/2010 and... more
Water and nitrogen deficits are the most important environmental factors greatly limiting crop production and plant distribution worldwide, especially in semi-arid regions. Two field experiments were conducted during 2009/2010 and 2010/2011 seasons in the Experimental Farm, Faculty of Environmental Agricultural Science, El-Arish, Suez Canal University, North Sinai Governorate, Egypt (31°08'04.3" N, 33°49'37.2"E). This study focuses on response of two fodder beet cultivars (Voroshinger & Rotta) to three water stress levels (50, 75, 100 % of field capacity, FC) and four nitrogen fertilizer levels (N1= 143, N2=214, N3=286, N4=357 kg Nha ). Superiority of Rotta cultivar in leaf area index and duration was observed as compared with 1 Voroshenger cv. at most of growth periods. Net assimilation rate was increased with increasing water stress levels. Increasing nitrogen fertilizer levels from 143 to 357 t ha increased root/top ratio, leaf area index and 1 duration. Irrigat...
Research Interests:
Research Interests:
Quinoa (Chenopodium quinoa Willd.) is a halophytic crop that can withstand a variety of abiotic stresses, including salt. The present research examined the mechanisms of salt tolerance in five different quinoa genotypes at four different... more
Quinoa (Chenopodium quinoa Willd.) is a halophytic crop that can withstand a variety of abiotic stresses, including salt. The present research examined the mechanisms of salt tolerance in five different quinoa genotypes at four different salinity levels (control (60), 80, 120, and 160 mM NaCl). ISSR and SCoT analysis revealed high polymorphism percentages of 90.91% and 85.26%, respectively. Furthermore, ISSR 1 and SCoT 7 attained the greatest number of polymorphic amplicons (27 and 26), respectively. Notably, LINE-6 and M-28 genotypes demonstrated the greatest number of unique positive and negative amplicons (50 and 42) generated from ISSR and SCoT, respectively. Protein pattern analysis detected 11 bands with a polymorphism percentage 27.27% among the quinoa genotypes, with three unique bands distinguishable for the M-28 genotype. Similarity correlation indicated that the highest similarity was between S-10 and Regeolone-3 (0.657), while the lowest similarity was between M-28 and L...
Research Interests:
Analyzed of genetic diversity for six canola genotypes using 5 inter-simple sequence repeats (ISSR) primer pairs were done. The cluster results of UPGMA method indicated that all the genotypes could be distinguished by ISSR markers. Six... more
Analyzed of genetic diversity for six canola genotypes using 5 inter-simple sequence repeats (ISSR) primer pairs were done. The cluster results of UPGMA method indicated that all the genotypes could be distinguished by ISSR markers. Six genotypes were categorized into two main clusters. Cluster I comprised Egyptian genotypes Serw-6 and Serw-4 and German genotype AD 201/Gi/81. Genotypes within cluster II comprised of French (Pactol), Chinese (Wan-you 25) and German (RG 4514).
Research Interests:
Ewas, Mohamed1*, Sayed A. Omar2, Eman El-Serag3, Mohamed H. Mubarak3 1Genetics and Cytology Unit, Department of Genetic Resources, Desert Research Center, El-Matareya, Cairo, Egypt 2Plant Breeding Unit, Department of Genetic Resources,... more
Ewas, Mohamed1*, Sayed A. Omar2, Eman El-Serag3, Mohamed H. Mubarak3 1Genetics and Cytology Unit, Department of Genetic Resources, Desert Research Center, El-Matareya, Cairo, Egypt 2Plant Breeding Unit, Department of Genetic Resources, Desert Research Center, El-Matareya, Cairo, Egypt 3Department of Crop Production, Faculty of Agriculture, Al-Arish University, Egypt *E-mail: Mohamed82@webmail.hzau.edu.cn Mohamed_ewas82@yahoo.com
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Research Interests: Genetics, Climate variability, Tropical Climate Variability, Microclimatology, Adaptation to climate variability and change, and 8 moreMicroclimate, Climate variability and household livelihoods, Extreme weather events and climate variability, Sugar Plant, Short-timescale Climate Variability, Interglacial Climate Variability, Intraseasonal to Interannual Climate Variability, and Climate modification
Research Interests:
This study was carried out at the farm of Faculty of Environmental Agricultural Sciences, Arish University, El-Arish, North Sinai, Egypt (31 08 40.3 N, 33 49 37.2 ̏ E), during 2016/2017 and 2017/2018 seasons. The aim of this study is to... more
This study was carried out at the farm of Faculty of Environmental Agricultural Sciences, Arish University, El-Arish, North Sinai, Egypt (31 08 40.3 N, 33 49 37.2 ̏ E), during 2016/2017 and 2017/2018 seasons. The aim of this study is to evaluate the response of three quinoa genotype (Giza 1, Danish KVL3704 and Misr 1) to three irrigation intervals. A split plot design with three replicates using Randomized Complete Block Design (RCBD) was performed. Three irrigation intervals used were [irrigation every (3days (I1), 6 days (I2) and 9 days (I3)]. Results showed that water stress caused a significant reduction in all studied traits except for 1000 -seed weight and carbohydrates content. Increasing irrigation intervals from 3 to 9 days decreased No. of panicles per plant from 13.62 to 9.68 in 2016/2017 season and from 16.29 to 10.53 in 2017/2018 season. Increasing irrigation intervals from 3 to 9 days decreased protein content (%) by (15.11%) in 2016/ 2017 season and (15.95 %) in 2017/...
Research Interests:
Research Interests:
Research Interests:
At germination time of some bread wheat genotypes, both dehydration caused by polyethylene glycol (PEG-6000) and salinity initiated by NaCl stresses have been applied at the age of the 7 day to investigate the seedling response of 4 F1... more
At germination time of some bread wheat genotypes, both dehydration caused by polyethylene glycol (PEG-6000) and salinity initiated by NaCl stresses have been applied at the age of the 7 day to investigate the seedling response of 4 F1 hybrids contrary to their 7 parents. Double wetted sheets of filtering paper included in sterilized pettri dishes were the experimental medium of growing, while, weekly irrigation solutions differed conformably with treatments. Since, drought stress solution was performed with adding 200 g/l of PEG6000 to distilled water to obtain -0.49 kPa of water potential, and saline solution was performed with solving NaCl in the distilled water to obtain 2000 ppm level. Hoagland solution was concerned for control treatment irrigation, regardless of the first irrigation for all treatments. Observations about stomata, growth and chemical analysis have been recorded around 2 months. Analysis of variance reflected the significance and some of the hybrid ability to s...
Research Interests:
BECAUSE of the increased interest in the potential of Jatropha as a biofuel plant, more attention is given to methods that allow the mass production of elite material. A simple and efficient protocol has been developed for high frequency... more
BECAUSE of the increased interest in the potential of Jatropha as a biofuel plant, more attention is given to methods that allow the mass production of elite material. A simple and efficient protocol has been developed for high frequency regeneration using nodal explants of Madagascar and Ecuador Jatropha curcas lines. The optimum shoot growth with high number and without callus formation was observed using MS medium supplemented with 1.0 mg/l BA in both lines within a period of 30-40 days which shows 3.8 and 3.4 shoot buds in Madagascar and Ecuador lines, respectively. Healthy elongated shoots were harvested and cultured on ½ strength MS basal salts without vitamins medium containing different concentrations of IBA individual or in combination with IAA or 2,4-D. Moreover, the optimum rooting medium with good root formation (46.6 and 40%) in both Jatropha lines and (3.0 – 2.4) roots per shoot containing halfstrength MS supplemented with 0.5 mg/l IBA. In the present study, different light sources like cool white fluorescent, warm white fluorescent and different high- brightness LEDs (red – blue – white) were used to monitor the root initiation of in vitro Jatropha shoots. Red LED light provided the most favorable growth conditions inducing a rooting response in 66.6% of the shoots in Madagascar Jatropha and 56.5% in Ecuador Jatropha which produced on average 4.2 and 3.5 roots per shoot, respectively in both lines. Thus, white LED light was more effective on root elongation than all studied light treatments that recorded (5.6 and 4.4 cm) root length in both lines. Therefore, well developed healthy in vitro rooted plantlets after 6 weeks were successfully acclimatized and the survival rate of in vitro propagated plantlets after transplanting was 40-60% and they grew as normal plants in the greenhouse.
Research Interests:
ABSTRACT: Water and nitrogen deficits are the most important environmental factors greatly limiting crop production and plant distribution worldwide, especially in semi-arid regions. Two field experiments were conducted during 2009/2010... more
ABSTRACT: Water and nitrogen deficits are the most important environmental factors greatly limiting crop production and plant distribution worldwide, especially in semi-arid regions. Two field experiments were conducted during 2009/2010 and 2010/2011 seasons in the Experimental Farm, Faculty of Environmental Agricultural Science, El-Arish, Suez Canal University, North Sinai Governorate, Egypt (31°08'04.3" N, 33°49'37.2"E). This study focuses on response of two fodder beet cultivars (Voroshinger & Rotta) to three water stress levels (50, 75, 100 % of field capacity, FC) and four nitrogen fertilizer levels (N1= 143; N2=214; N3=286; N4=357 kg N ha-1). Superiority of Rotta cultivar in leaf area index and duration was observed as compared with Voroshenger cv. at most of growth periods. Net assimilation rate was increased with increasing water stress levels. Increasing nitrogen fertilizer levels from 143 to 357 t ha-1 increased root/top ratio, leaf area index and duration. Irrigating fodder beet plants with 100 % soil field capacity gave the highest fresh and dry top and root yields. The fresh and dry top and root yields in Rotta cultivar surpassed Voroshenger one under water deficit and low fertility level under semi-arid conditions, where, top and root fresh yield of Rotta cv. surpassed Voroshenger cv by 16.37 and 7.07 %, respectively. However, increasing N levels up to 357 t ha-1 gave the maximum fresh and dry root yields, while adding more nitrogen fertilizer application had no significant increase in both yields.
It could be concluded that fodder beet Rotta cultivar is more tolerant to water deficit and low fertility level under semi- arid conditions, where, it could gave an economic forage yield of top and root. For achieving this goal, we could recommend this cultivar to be irrigated when soil field capacity reached 75 % and fertilized with nitrogen nutrient at the rate of 286 kg N ha-1.
It could be concluded that fodder beet Rotta cultivar is more tolerant to water deficit and low fertility level under semi- arid conditions, where, it could gave an economic forage yield of top and root. For achieving this goal, we could recommend this cultivar to be irrigated when soil field capacity reached 75 % and fertilized with nitrogen nutrient at the rate of 286 kg N ha-1.
Research Interests:
This work aimed to evaluate growth of Stevia rebaudiana under stress conditions. The plantlets were cultured on modified MS medium supplemented with different concentrations of NaCl at 0.0, 5000, 7500 and 10000 ppm for salinity... more
This work aimed to evaluate growth of Stevia rebaudiana under stress conditions. The plantlets were cultured on modified MS medium supplemented with different concentrations of NaCl at 0.0, 5000, 7500 and 10000 ppm for salinity strees, as well as mannitol at 0.0, 5, 7.5 and 10 bar. Results showed that the plantlet growth characters decreased as salinity and drought stress level increased. Plantlet growth traits significantly varied under deferent stress levels. Drought strees was more sever on plantlet growth than salinity stress. The highest values for plantlet growth traits were observed at 5000 ppm salinity level while the lowest values were observed at 10 bar drought strees. Some treatments were promised stevia tolerance under both of salinity and drought stress conditions.
Research Interests:
Sugar beet is a tolerant crop to salinity and wide range of climate, so, it could be economically grown in light textural soils (sandy) such as at the Northern parts of Egypt. Delivering higher quality of sugar beet roots to the factory... more
Sugar beet is a tolerant crop to salinity and wide range of climate, so, it could be economically grown in light textural soils (sandy) such as at the Northern parts of Egypt. Delivering higher quality of sugar beet roots to the factory is determined by the concentration of sucrose and impurities in the root, which, is mainly related to Nitrogen (N) and Potassium (K) fertilizers program. So, the effect of four N levels (105, 141, 176, 211 N kg ha-1) and four K levels (60, 100, 140 and 180 K2O kg ha-1) on multi germ sugar beet cultivar (Ymer) under sandy soil conditions was studied in North Sinai Governorate, Egypt (31°N and 32°E) during two winter seasons (2009/2010; 2010/2011). Results showed that the highest sugar beet yields of top (15.478 and 17.695 t ha-1), root (41.184 and 49.488 t ha-1) and gross sugar (7.622 and 8.936 t ha"1) were obtained by adding the highest fertilizers rates (211 N kg and 140 K2O kg per hectare). The maximum sucrose percent (18.64 and 18. 87%) was achieved by adding 100 K2O kg and 141 N kg ha-1. Gross sugar yield per hactare was positively correlated with yields of sugar beet top (0.974) and roots (0.823) ha-1 but negatively correlated with quality index (-0.987). Path analysis indicated that, root yield ha-1, sucrose% and the interaction between root yield and top yield were the most variable contribution of gross sugar yield.