Pub Date : 2021-01-22DOI: 10.21608/AGRO.2021.53113.1243
O. Ali, M. Abdel-Aal
EGYPT is currently experiencing water shortage, which causes a threat to crop productivity and efficiency of water use, especially in light of the current climatic changes. A field experiment was done to study effect of irrigation intervals (12, 16 and 20 days), soil amendments (compost, biochar, polyacrylamide “PAM” and hydrogel) beside control and their interaction on root, morpho-physiological, yield and quality traits of soybean.1- Prolonging irrigation intervals up to 20 days significantly decreased root characters (length and dry weight of root, number and dry weight of nodules/ plant and nitrogenase activity), morphological characters (plant height, leaves number/ plant, leaf area and total dry weight/ plant), physiological traits (relative water content and chlorophyll), yield (pods number/ plant, number and weight of seeds/ pod, 100-seed weight and seed yields/ plant and fed) and quality (protein% and oil and protein yields/fed).2- Application of soil amendments caused a significant and positive effect on root, morpho-physiological characters as well as yield and seed quality compared to control. Hydrogel application produced the highest values of most abovementioned characters.3- The interaction revealed that highest values of most characters were obtained when plants were irrigated every 12 days and treated with hydrogel. Plants irrigated every 16 days produced the highest values of root length and oil yield when treated with PAM and hydrogel, respectively.4- Irrigation every 16 and 20 days can save water amounted to 18.62 and 27.82% compared to irrigation every 12 days, respectively. Irrigation every 16 days associated with hydrogel produced the highest values of water use efficiency (WUE) indicating that it was more effective for productivity and water consumption.
{"title":"Importance of Some Soil Amendments on Improving Growth, Productivity and Quality of Soybean Grown under Different Irrigation Intervals","authors":"O. Ali, M. Abdel-Aal","doi":"10.21608/AGRO.2021.53113.1243","DOIUrl":"https://doi.org/10.21608/AGRO.2021.53113.1243","url":null,"abstract":"EGYPT is currently experiencing water shortage, which causes a threat to crop productivity and efficiency of water use, especially in light of the current climatic changes. A field experiment was done to study effect of irrigation intervals (12, 16 and 20 days), soil amendments (compost, biochar, polyacrylamide “PAM” and hydrogel) beside control and their interaction on root, morpho-physiological, yield and quality traits of soybean.1- Prolonging irrigation intervals up to 20 days significantly decreased root characters (length and dry weight of root, number and dry weight of nodules/ plant and nitrogenase activity), morphological characters (plant height, leaves number/ plant, leaf area and total dry weight/ plant), physiological traits (relative water content and chlorophyll), yield (pods number/ plant, number and weight of seeds/ pod, 100-seed weight and seed yields/ plant and fed) and quality (protein% and oil and protein yields/fed).2- Application of soil amendments caused a significant and positive effect on root, morpho-physiological characters as well as yield and seed quality compared to control. Hydrogel application produced the highest values of most abovementioned characters.3- The interaction revealed that highest values of most characters were obtained when plants were irrigated every 12 days and treated with hydrogel. Plants irrigated every 16 days produced the highest values of root length and oil yield when treated with PAM and hydrogel, respectively.4- Irrigation every 16 and 20 days can save water amounted to 18.62 and 27.82% compared to irrigation every 12 days, respectively. Irrigation every 16 days associated with hydrogel produced the highest values of water use efficiency (WUE) indicating that it was more effective for productivity and water consumption.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"1 1","pages":"13-27"},"PeriodicalIF":0.5,"publicationDate":"2021-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48594615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-20DOI: 10.21608/AGRO.2021.49359.1238
M. El-Fouly, E. A. El-Nour
A pot experiment was carried out at the green house of Fertilization Technology Department to investigate the effect of salinity through irrigation water (0.0 and 4000 ppm NaCl) and foliar feeding with chelated 12% Fe, Zn and Mn in the form of EDTA each at rate of 1g /L as individual nutrient in addition to mixture of them on bean growth and nutrients uptake. Results revealed that salinity resulted in significant reduction in dry weight. However, foliar feeding showed significant increments in the bean dry weight. Normal soil condition in combination with foliar feeding with the mixture of micronutrients achieved the highest dry weight increments Results showed that salinity had significant negative effects on micronutrients uptake, while it had no marked effects on macronutrients uptake except in case of K where salinity markedly reduced its uptake. Foliar feeding with micronutrients either as individual nutrient or mixture of them showed significant increases in macro and micronutrients uptake. Spraying bean plants with the mixture on micronutrients showed the highest marked increments as compared with control and the other micronutrient treatments. Moreover, the interaction between salinity and micronutrient treatments on macro and micronutrients uptake was significant, where; most of calculated macro and micronutrients uptake showed the highest values by spraying bean plants with the mixture treatment and under the normal soil condition. The only exception, was in case of N uptake calculated in bean, stem where, the highest value resulted form the spraying plants with Fe in combination with normal soil condition.
{"title":"Foliar Feeding With Micronutrients to Overcome Adverse Salinity Effects on Growth and Nutrients Uptake of Bean (Phaseolus vulgaris)","authors":"M. El-Fouly, E. A. El-Nour","doi":"10.21608/AGRO.2021.49359.1238","DOIUrl":"https://doi.org/10.21608/AGRO.2021.49359.1238","url":null,"abstract":"A pot experiment was carried out at the green house of Fertilization Technology Department to investigate the effect of salinity through irrigation water (0.0 and 4000 ppm NaCl) and foliar feeding with chelated 12% Fe, Zn and Mn in the form of EDTA each at rate of 1g /L as individual nutrient in addition to mixture of them on bean growth and nutrients uptake. Results revealed that salinity resulted in significant reduction in dry weight. However, foliar feeding showed significant increments in the bean dry weight. Normal soil condition in combination with foliar feeding with the mixture of micronutrients achieved the highest dry weight increments Results showed that salinity had significant negative effects on micronutrients uptake, while it had no marked effects on macronutrients uptake except in case of K where salinity markedly reduced its uptake. Foliar feeding with micronutrients either as individual nutrient or mixture of them showed significant increases in macro and micronutrients uptake. Spraying bean plants with the mixture on micronutrients showed the highest marked increments as compared with control and the other micronutrient treatments. Moreover, the interaction between salinity and micronutrient treatments on macro and micronutrients uptake was significant, where; most of calculated macro and micronutrients uptake showed the highest values by spraying bean plants with the mixture treatment and under the normal soil condition. The only exception, was in case of N uptake calculated in bean, stem where, the highest value resulted form the spraying plants with Fe in combination with normal soil condition.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"1 1","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2021-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41680828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Timon Oghenewewa, O. Shakede, Uyiosasere Dennis Aig
{"title":"Comparative Effect of NPK (15:15:15) and Poultry Manure on the Growth and Yield of White Yam (Dioscorea rotundata Poir.)","authors":"Timon Oghenewewa, O. Shakede, Uyiosasere Dennis Aig","doi":"10.3923/ja.2021.17.24","DOIUrl":"https://doi.org/10.3923/ja.2021.17.24","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"8 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82541861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dry Matter Production, Leaf Area Index, Yield and Yield Components of Myanmar Local Rice (Oryza sativa L.) Genotypes Observation","authors":"Su Latt Phyu, Nyo Mar Htwe, Chan Nyein Thu","doi":"10.3923/ja.2021.9.16","DOIUrl":"https://doi.org/10.3923/ja.2021.9.16","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"11 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88593226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Sirait, Agnes Imelda Man, Osten M. Samosir, Robert G. Marpaung, Nurhayati, C. Manalu
{"title":"Growth Palm Oil Seedling (Elaeis guineensis Jacq.) via NPK Fertilization and Different Frequency of Watering","authors":"B. Sirait, Agnes Imelda Man, Osten M. Samosir, Robert G. Marpaung, Nurhayati, C. Manalu","doi":"10.3923/JA.2021.1.8","DOIUrl":"https://doi.org/10.3923/JA.2021.1.8","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"25 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81557518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.21608/agro.2020.32917.1217
A. Morsy, E. Mohamed, S. Farag, M. Tantawy
Two experiments were performed at Faculty of Agriculture, El-Minia University Egypt, during two consecutive seasons 2017-18 and 2018-19 to evaluate the impact of weed removal period and different irrigation regimes on weeds, critical period of weed competition and yield of wheat crop and its components. A strip-plot design with three replications was used. Four irrigation regimes were in the horizontal plots and 8 treatments of weed competition (4 weed-free periods and 4 weed competition periods) were in vertical plots. Results showed that omitting 2 irrigation (IR4) significantly decreased total density and dry weight of weeds, wheat traits plant height, spike length, No. of grains spike-1, 1000-grain weight, No. of spikes m-2, grain yield and grain ability. Weed infestation for whole season significantly decreased all studied traits compared with weed removal even once after wheat sowing (DAS). Maximum yield losses of wheat due to weed infestation in whole season were 26.04 and 25.62% compared with weed-free treatment in the 1st and 2nd seasons, respectively. Cubic model was the best model for weed-free and weed competition over all treatments of the two seasons. The critical periods for weed control were 42 and 32 to 62 and 52 DAS in the two seasons.
{"title":"Effects of Irrigation Regimes and Duration of Weed Interference on Grain Yield of Wheat (Triticum aestivum L.) in Middle Egypt","authors":"A. Morsy, E. Mohamed, S. Farag, M. Tantawy","doi":"10.21608/agro.2020.32917.1217","DOIUrl":"https://doi.org/10.21608/agro.2020.32917.1217","url":null,"abstract":"Two experiments were performed at Faculty of Agriculture, El-Minia University Egypt, during two consecutive seasons 2017-18 and 2018-19 to evaluate the impact of weed removal period and different irrigation regimes on weeds, critical period of weed competition and yield of wheat crop and its components. A strip-plot design with three replications was used. Four irrigation regimes were in the horizontal plots and 8 treatments of weed competition (4 weed-free periods and 4 weed competition periods) were in vertical plots. Results showed that omitting 2 irrigation (IR4) significantly decreased total density and dry weight of weeds, wheat traits plant height, spike length, No. of grains spike-1, 1000-grain weight, No. of spikes m-2, grain yield and grain ability. Weed infestation for whole season significantly decreased all studied traits compared with weed removal even once after wheat sowing (DAS). Maximum yield losses of wheat due to weed infestation in whole season were 26.04 and 25.62% compared with weed-free treatment in the 1st and 2nd seasons, respectively. Cubic model was the best model for weed-free and weed competition over all treatments of the two seasons. The critical periods for weed control were 42 and 32 to 62 and 52 DAS in the two seasons.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":" ","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46651727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-29DOI: 10.21608/agro.2020.43329.1230
A. Rabti, Radhia Mekaoussi, Z. Fellahi, A. Hannachi, A. Benbelkacem, A. Benmahammed, H. Bouzerzour
This work reports on the characterization of 58 old and modern durum wheat grown under south Mediterranean conditions. The experiment was conducted in a randomized complete block design at two locations (ITGC-AES of Setif and Khroub, Algeria) and during the 2015/16 and 2016/17 cropping seasons. The results indicated that, averaged across seasons and locations, modern varieties outperformed the old ones in terms of grain yield, spike number, spike weight, number of kernels per square meter, harvest index, spike fertility and stay green. Old varieties outperformed the modern ones in terms of straw yield, lateness, tallness and flag leaf area. Modern varieties were stress tolerant and more responsive to improved growth conditions, showing agronomic stability type. Old varieties were characterized by a minimal responsiveness to improved environmental conditions, stress tolerance, and biological stability type. Pearson’s correlation coefficients and path analyses indicated that, in both sources of germoplasm, the strong influence of biomass, spike number, spike fertility and harvest index on grain yield. Physiological traits had negligible direct effects and small indirect effects via biomass, spike number and harvest index. Principal component analysis revealed that the old varieties are genetically far from the improved ones suggesting that old varieties represent an important gene pool for important traits among which plant height and straw yield. Differences between both sources of germoplasm are suggested to be used usefully in breeding to enhance yield potential, stability and resilience to changing climate of the future varieties.
{"title":"Characterization of Old And Recent Durum Wheat [Triticum turgidum (L.) Tell. convar. Durum (Desf.) Mackey] Varieties Assessed under South Mediterranean Conditions","authors":"A. Rabti, Radhia Mekaoussi, Z. Fellahi, A. Hannachi, A. Benbelkacem, A. Benmahammed, H. Bouzerzour","doi":"10.21608/agro.2020.43329.1230","DOIUrl":"https://doi.org/10.21608/agro.2020.43329.1230","url":null,"abstract":"This work reports on the characterization of 58 old and modern durum wheat grown under south Mediterranean conditions. The experiment was conducted in a randomized complete block design at two locations (ITGC-AES of Setif and Khroub, Algeria) and during the 2015/16 and 2016/17 cropping seasons. The results indicated that, averaged across seasons and locations, modern varieties outperformed the old ones in terms of grain yield, spike number, spike weight, number of kernels per square meter, harvest index, spike fertility and stay green. Old varieties outperformed the modern ones in terms of straw yield, lateness, tallness and flag leaf area. Modern varieties were stress tolerant and more responsive to improved growth conditions, showing agronomic stability type. Old varieties were characterized by a minimal responsiveness to improved environmental conditions, stress tolerance, and biological stability type. Pearson’s correlation coefficients and path analyses indicated that, in both sources of germoplasm, the strong influence of biomass, spike number, spike fertility and harvest index on grain yield. Physiological traits had negligible direct effects and small indirect effects via biomass, spike number and harvest index. Principal component analysis revealed that the old varieties are genetically far from the improved ones suggesting that old varieties represent an important gene pool for important traits among which plant height and straw yield. Differences between both sources of germoplasm are suggested to be used usefully in breeding to enhance yield potential, stability and resilience to changing climate of the future varieties.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":" ","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2020-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49203095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-18DOI: 10.21608/agro.2020.43465.1231
W. El-Orabey, Shaimaa M. Ahmed, A. Hamweih, O. Mabrouk
Genetic diversity among plant species is important for improving plant traits. Its estimation is very essential to help selection of genetic resources in breeding programmes. Moreover, it is the base for effective and successful crop enhancement and can be assessed by several methods i.e. using morphological trait (resistance to leaf rust) and molecular markers. In this study, the pathogenicity of 53 wheat varieties was assessed by using 15 leaf rust pathotypes under greenhouse condition at seedling stage. In addition, the genetic diversity was analyzed using 10 molecular markers (microsatellite markers) linked to rust resistant genes. The cluster analysis indicated three sub-clusters based on phenotypic and molecular data. In general, low level (r=0.15) of correlation was obtained between the phenotypic and the genotypic data, however, the molecular analysis is probably more efficient for estimating genetic diversity. Molecular analysis is an efficient method because it’s not affected by environment is plentiful and don’t need earlier pedigree information which can improve the efficacy of molecular breeding practices.
{"title":"Phenotypic and Molecular Assessment for Genetic Diversity of Egyptian Wheat Varieties","authors":"W. El-Orabey, Shaimaa M. Ahmed, A. Hamweih, O. Mabrouk","doi":"10.21608/agro.2020.43465.1231","DOIUrl":"https://doi.org/10.21608/agro.2020.43465.1231","url":null,"abstract":"Genetic diversity among plant species is important for improving plant traits. Its estimation is very essential to help selection of genetic resources in breeding programmes. Moreover, it is the base for effective and successful crop enhancement and can be assessed by several methods i.e. using morphological trait (resistance to leaf rust) and molecular markers. In this study, the pathogenicity of 53 wheat varieties was assessed by using 15 leaf rust pathotypes under greenhouse condition at seedling stage. In addition, the genetic diversity was analyzed using 10 molecular markers (microsatellite markers) linked to rust resistant genes. The cluster analysis indicated three sub-clusters based on phenotypic and molecular data. In general, low level (r=0.15) of correlation was obtained between the phenotypic and the genotypic data, however, the molecular analysis is probably more efficient for estimating genetic diversity. Molecular analysis is an efficient method because it’s not affected by environment is plentiful and don’t need earlier pedigree information which can improve the efficacy of molecular breeding practices.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":" ","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2020-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44577199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-15DOI: 10.21608/agro.2020.40803.1228
Mona M. Hemeid, M. Zeid
SUNFLOWER is an important oil crop that has received great attention by the Egyptian agricultural sector in the early nineties, when a boom in oil extraction from the crop was observed. Since then and for more than two decades now, sunflower for oil purpose was neglected, hybrids are no longer on the market and confectionery sunflower became more profitable for Egyptian farmers. Recently, the registration of the single hybrid Sirena and its promotion based on contract basis with farmers, may present a new comeback to oil sunflower in Egypt. The aim of this study was to evaluate effect of sowing date (April vs. August) and preceding crop (maize vs. sunflower) in a double cropping system, under varying nitrogen fertilization levels (36, 72, 108 and 144kg N/ha), on growth and productivity of the newly introduced sunflower hybrid Sirena. Results from the two-year experiments, indicated that April sowing, at a prevailing average temperature of 20-24oC later rising to about 28oC at harvest time, was suitable to secure maximum seed yield of 4.39ton/ha. In a double cropping system, where sowing was performed in August, the hybrid yielded an average of 3.4 ton/ha, whether preceded by maize or sunflower. Seed oil percentage amounted to an average of 42.8% and was affected by the year, rather than sowing date or preceding crop. Effects of the nitrogen fertilization rates were masked by the soil available nitrogen, however, based on the regression analysis and equations for estimating the nitrogen requirements based on the hybrid seed yield, 72-108kg N/ha were necessary to achieve the maximum seed yield while sustaining an oil percentage above the 42%.
{"title":"Effect of Sowing Date and Preceding Crop, on Growth and Productivity of the Sunflower Hybrid Sirena, Under Varying Nitrogen Fertilization Levels","authors":"Mona M. Hemeid, M. Zeid","doi":"10.21608/agro.2020.40803.1228","DOIUrl":"https://doi.org/10.21608/agro.2020.40803.1228","url":null,"abstract":"SUNFLOWER is an important oil crop that has received great attention by the Egyptian agricultural sector in the early nineties, when a boom in oil extraction from the crop was observed. Since then and for more than two decades now, sunflower for oil purpose was neglected, hybrids are no longer on the market and confectionery sunflower became more profitable for Egyptian farmers. Recently, the registration of the single hybrid Sirena and its promotion based on contract basis with farmers, may present a new comeback to oil sunflower in Egypt. The aim of this study was to evaluate effect of sowing date (April vs. August) and preceding crop (maize vs. sunflower) in a double cropping system, under varying nitrogen fertilization levels (36, 72, 108 and 144kg N/ha), on growth and productivity of the newly introduced sunflower hybrid Sirena. Results from the two-year experiments, indicated that April sowing, at a prevailing average temperature of 20-24oC later rising to about 28oC at harvest time, was suitable to secure maximum seed yield of 4.39ton/ha. In a double cropping system, where sowing was performed in August, the hybrid yielded an average of 3.4 ton/ha, whether preceded by maize or sunflower. Seed oil percentage amounted to an average of 42.8% and was affected by the year, rather than sowing date or preceding crop. Effects of the nitrogen fertilization rates were masked by the soil available nitrogen, however, based on the regression analysis and equations for estimating the nitrogen requirements based on the hybrid seed yield, 72-108kg N/ha were necessary to achieve the maximum seed yield while sustaining an oil percentage above the 42%.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"279-290"},"PeriodicalIF":0.5,"publicationDate":"2020-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42120786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-11-01DOI: 10.21608/agro.2020.30089.1226
W. El-Orabey, Dalia M. Shaheen, O. Mabrouk, A. Elkot, S. Esmail
Wheat leaf rust, caused by the fungus Puccinia triticina Eriks., is a destructive disease found throughout common wheat production areas worldwide. Fifty wheat leaf rust monogenic lines were tested with five of Puccinia triticina pathotypes i.e. BJPPQ, LQFDS, PHFPG, PTPDN, TRFDJ at four stable temperatures (30 0C, 25 0C, 20 0C and 15 0C). The wheat monogenic lines viz. Lr 16, Lr 17 and Lr 23 were more resistant at 25 0C, while these genes were found susceptible at 15 0C, 20 0C and 30 0C to all tested races. Eight monogenic lines i.e. Lr11, Lr12, Lr13, Lr14a, Lr18, Lr47, Lr50 and Lr68 displayed temperature sensitivity which were completely resistant at 15 0C and 20 0C. Lr11, Lr12, Lr13, Lr14a, Lr18, Lr47, Lr50 and Lr68 were completely susceptible at 25 0C and 30 0C to all races of Puccinia triticina. Lr 34 showed temperature sensitivity to three of the tested races (LQFDS, PHFPG and PTPDN) which was resistant at 15 0C and 20 0C to, but was susceptible at 25 0C and 30 0C. Genes like Lr1, Lr2a, Lr2b, Lr2c, Lr3ka, Lr3, Lr9, Lr10, Lr14b, Lr15, Lr10+27+31, Lr19, Lr24, Lr28, Lr33, Lr36, Lr39, Lr42, Lr51 and Lr67 were slightly resistant at all temperatures to some races and were susceptible to other races. The other tested monogenic lines were susceptible at all temperatures to all tested races. Further, this study will be helpful to develop resistant cultivars against leaf rust of wheat.
{"title":"Effect of Temperature on Monogenic Lines of Wheat Leaf Rust Caused by Puccinia triticina","authors":"W. El-Orabey, Dalia M. Shaheen, O. Mabrouk, A. Elkot, S. Esmail","doi":"10.21608/agro.2020.30089.1226","DOIUrl":"https://doi.org/10.21608/agro.2020.30089.1226","url":null,"abstract":"Wheat leaf rust, caused by the fungus Puccinia triticina Eriks., is a destructive disease found throughout common wheat production areas worldwide. Fifty wheat leaf rust monogenic lines were tested with five of Puccinia triticina pathotypes i.e. BJPPQ, LQFDS, PHFPG, PTPDN, TRFDJ at four stable temperatures (30 0C, 25 0C, 20 0C and 15 0C). The wheat monogenic lines viz. Lr 16, Lr 17 and Lr 23 were more resistant at 25 0C, while these genes were found susceptible at 15 0C, 20 0C and 30 0C to all tested races. Eight monogenic lines i.e. Lr11, Lr12, Lr13, Lr14a, Lr18, Lr47, Lr50 and Lr68 displayed temperature sensitivity which were completely resistant at 15 0C and 20 0C. Lr11, Lr12, Lr13, Lr14a, Lr18, Lr47, Lr50 and Lr68 were completely susceptible at 25 0C and 30 0C to all races of Puccinia triticina. Lr 34 showed temperature sensitivity to three of the tested races (LQFDS, PHFPG and PTPDN) which was resistant at 15 0C and 20 0C to, but was susceptible at 25 0C and 30 0C. Genes like Lr1, Lr2a, Lr2b, Lr2c, Lr3ka, Lr3, Lr9, Lr10, Lr14b, Lr15, Lr10+27+31, Lr19, Lr24, Lr28, Lr33, Lr36, Lr39, Lr42, Lr51 and Lr67 were slightly resistant at all temperatures to some races and were susceptible to other races. The other tested monogenic lines were susceptible at all temperatures to all tested races. Further, this study will be helpful to develop resistant cultivars against leaf rust of wheat.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"1 1","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41691156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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