Jidapa Khonghinta, Juthamas Khruengpat, P. Songsri, S. Gonkhamdee, Nuntawoot Jongrungkl
{"title":"Classification of the Sugar Accumulation Patterns in Diverse Sugarcane Cultivars under Rain-fed Conditions in a Tropical Area","authors":"Jidapa Khonghinta, Juthamas Khruengpat, P. Songsri, S. Gonkhamdee, Nuntawoot Jongrungkl","doi":"10.3923/ja.2020.94.105","DOIUrl":"https://doi.org/10.3923/ja.2020.94.105","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"6 1","pages":"94-105"},"PeriodicalIF":0.5,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89490879","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}
Ansaar Ahmed, Ibni Amin Khali, Murad Ali, I. Hussain, M. Imtiaz, G. Ahmad
{"title":"Genetic Potential and Stability of Wheat Genotypes in Response to Sowing Time","authors":"Ansaar Ahmed, Ibni Amin Khali, Murad Ali, I. Hussain, M. Imtiaz, G. Ahmad","doi":"10.3923/ja.2020.113.119","DOIUrl":"https://doi.org/10.3923/ja.2020.113.119","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"38 1","pages":"113-119"},"PeriodicalIF":0.5,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87446796","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":"Enhancing Organic Tomato Yield and Quality by Liquid Organic Fertilizer","authors":"G. A. Sopha, A. Efendi, L. Liferdi","doi":"10.3923/ja.2020.106.112","DOIUrl":"https://doi.org/10.3923/ja.2020.106.112","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"15 1","pages":"106-112"},"PeriodicalIF":0.5,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80798829","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}
Bernard Mukiri Gic, Arphaxard Ireri Muth, Paul Njiruh Nth
{"title":"Agronomic Benefits of Shubhodaya-Mycorrhizal Bio-Fertilizer on Banana Production in Embu County, Kenya","authors":"Bernard Mukiri Gic, Arphaxard Ireri Muth, Paul Njiruh Nth","doi":"10.3923/ja.2020.65.75","DOIUrl":"https://doi.org/10.3923/ja.2020.65.75","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"82 1","pages":"65-75"},"PeriodicalIF":0.5,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73677403","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":"Soil Properties and Vegetative Growth of Fluted Pumpkin (Telfairia occidentalis Hook F) as Influenced by Organic Fertilizer","authors":"Adebayo A. Olowoak, Olumuyiwa P. Adeyemo","doi":"10.3923/ja.2020.76.82","DOIUrl":"https://doi.org/10.3923/ja.2020.76.82","url":null,"abstract":"","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"15 1","pages":"76-82"},"PeriodicalIF":0.5,"publicationDate":"2020-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91327353","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 : 2020-04-01DOI: 10.21608/agro.2020.19752.1194
Y. El-Ghobashy, Amira Attia Elmehy, K. A. El-Douby
A TWO-year field experiment was carried out at El-Serw Agricultural Research Station, during the 2018 and 2019 seasons to study the effect of intercropping cowpea (Vigna unguiculata L.) with three maize (Zea mays L) hybrids (SC 168, SC176 and TWC 321) and four N fertilization treatments (120kg N/fed as urea (100% N mineral), 50% N mineral + 50% N nano, 75% N mineral + 25% N nano and 3.0cm3 N nano/ L (100% N nano) on maize and cowpea productivity, land use efficiency and economic return. A split-plot design with three replicates was used. Results showed that maize hybrids had significant effect on yield and yield attributes of maize and cowpea in both seasons, with some exception. The S.C.168 hybrid gave the highest grain yield and its components, while intercropping cowpea with S.C.176 hybrid significantly increased yield and its attributes of cowpea in comparison with other hybrids. Applying 75% N mineral along with 25% N nano significantly increased growth, yield and yield components of maize and cowpea in both seasons. Significantly increase in yield and its attributes of maize and cowpea was realized by interaction between maize SC168 and 75% N mineral +25% N nano fertilization. Intercropping cowpea with maize SC168 that received 75% of the N mineral + 25% nano fertilizer recorded the highest LER 1.67 and 1.66, ATER 1.59 and 1.58, Aggressivity 0.28 and 0.23, gross return15865 and 15854 L.E./fed and net return 7983 and 7972L.E./fed in first and second seasons, respectively, as well as rationalizing the use of N mineral fertilizers.
{"title":"Influence of Intercropping Cowpea with some Maize Hybrids and N Nano-Mineral Fertilization on Productivity in Salinity Soil","authors":"Y. El-Ghobashy, Amira Attia Elmehy, K. A. El-Douby","doi":"10.21608/agro.2020.19752.1194","DOIUrl":"https://doi.org/10.21608/agro.2020.19752.1194","url":null,"abstract":"A TWO-year field experiment was carried out at El-Serw Agricultural Research Station, during the 2018 and 2019 seasons to study the effect of intercropping cowpea (Vigna unguiculata L.) with three maize (Zea mays L) hybrids (SC 168, SC176 and TWC 321) and four N fertilization treatments (120kg N/fed as urea (100% N mineral), 50% N mineral + 50% N nano, 75% N mineral + 25% N nano and 3.0cm3 N nano/ L (100% N nano) on maize and cowpea productivity, land use efficiency and economic return. A split-plot design with three replicates was used. Results showed that maize hybrids had significant effect on yield and yield attributes of maize and cowpea in both seasons, with some exception. The S.C.168 hybrid gave the highest grain yield and its components, while intercropping cowpea with S.C.176 hybrid significantly increased yield and its attributes of cowpea in comparison with other hybrids. Applying 75% N mineral along with 25% N nano significantly increased growth, yield and yield components of maize and cowpea in both seasons. Significantly increase in yield and its attributes of maize and cowpea was realized by interaction between maize SC168 and 75% N mineral +25% N nano fertilization. Intercropping cowpea with maize SC168 that received 75% of the N mineral + 25% nano fertilizer recorded the highest LER 1.67 and 1.66, ATER 1.59 and 1.58, Aggressivity 0.28 and 0.23, gross return15865 and 15854 L.E./fed and net return 7983 and 7972L.E./fed in first and second seasons, respectively, as well as rationalizing the use of N mineral fertilizers.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"63-78"},"PeriodicalIF":0.5,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49605740","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 : 2020-04-01DOI: 10.21608/AGRO.2020.21968.1201
M. S. Mahmoud, E. Hussein, Karim Ashour
THE CURRENT work was carried out at the Agriculture Research Station of East Al-Eweinat, New Valley Governorate to evaluate the yield potential of 16 peanut genotypes during 2016 and 2017 growing seasons. The used experimental design was a randomized complete block design with three replicates. Correlation coefficients were computed between pod yields and its related attributes as well as normal and sequential path analysis models were automated to obtain information on the direct and indirect effects of important traits affecting pod yields for using them as selection criteria in future peanut breeding programs. Results showed that genotypes 7, 11 and 16 produced the heaviest pod yields while genotypes 13 and 15 recorded the lowest pod yields. Concerning the normal path analysis model, several undesirable symptoms were obtained indicating the presence of multicollinearity problem. Subsequently, the poor estimators of normal path analysis model, as a result of multicollinearity, enough to reject the normal form of path analysis. Statistically, more precise results were obtained using the sequential path analysis model. Results revealed that the pod yields depended primarily upon pod weight per plant and number of pods per plant as first-order variables accounted for nearly 98% of the variation in pod yields. The maximum positive direct effects were obtained by pods weight per plant (0.91) followed by number of pods per plant (0.14) indicting that the indirect selection for pod yields through these traits would be effective for peanut improvement. The second-order path analysis showed that seeds weight per plant had the considerable positive direct and indirect effects toward each of number of pods per plant and pods weight per plant. In fact, the sequential path analysis gave a somewhat different picture from what the normal model path analysis did.
目前的工作是在新谷省East Al Eweinat的农业研究站进行的，以评估2016年和2017年生长季节16种花生基因型的产量潜力。所用的实验设计是一个随机的完全块设计，有三个重复。计算了荚产量与其相关属性之间的相关系数，并自动建立了正态和序列路径分析模型，以获得影响荚产量的重要性状的直接和间接影响信息，作为未来花生育种计划的选择标准。结果表明，基因型7、11和16的荚产量最高，而基因型13和15的荚产量最低。关于正态路径分析模型，得到了几个不希望出现的症状，表明存在多重共线性问题。随后，由于多重共线性，正规路径分析模型的估计量很差，足以拒绝正规形式的路径分析。在统计学上，使用顺序路径分析模型获得了更精确的结果。结果表明，荚产量主要取决于单株荚重和单株荚数，一阶变量占荚产量变化的近98%。单株荚重（0.91）和单株荚数（0.14）的直接效应最大，表明通过这些性状间接选择荚产量对花生改良是有效的。二阶通径分析表明，单株种子重量对单株荚数和单株荚重均具有显著的正向直接和间接影响。事实上，序列路径分析给出了与正常模型路径分析有所不同的结果。
{"title":"Sequential Path Analysis for Determining the Interrelationships between Yield and Its Components in Peanut","authors":"M. S. Mahmoud, E. Hussein, Karim Ashour","doi":"10.21608/AGRO.2020.21968.1201","DOIUrl":"https://doi.org/10.21608/AGRO.2020.21968.1201","url":null,"abstract":"THE CURRENT work was carried out at the Agriculture Research Station of East Al-Eweinat, New Valley Governorate to evaluate the yield potential of 16 peanut genotypes during 2016 and 2017 growing seasons. The used experimental design was a randomized complete block design with three replicates. Correlation coefficients were computed between pod yields and its related attributes as well as normal and sequential path analysis models were automated to obtain information on the direct and indirect effects of important traits affecting pod yields for using them as selection criteria in future peanut breeding programs. Results showed that genotypes 7, 11 and 16 produced the heaviest pod yields while genotypes 13 and 15 recorded the lowest pod yields. Concerning the normal path analysis model, several undesirable symptoms were obtained indicating the presence of multicollinearity problem. Subsequently, the poor estimators of normal path analysis model, as a result of multicollinearity, enough to reject the normal form of path analysis. Statistically, more precise results were obtained using the sequential path analysis model. Results revealed that the pod yields depended primarily upon pod weight per plant and number of pods per plant as first-order variables accounted for nearly 98% of the variation in pod yields. The maximum positive direct effects were obtained by pods weight per plant (0.91) followed by number of pods per plant (0.14) indicting that the indirect selection for pod yields through these traits would be effective for peanut improvement. The second-order path analysis showed that seeds weight per plant had the considerable positive direct and indirect effects toward each of number of pods per plant and pods weight per plant. In fact, the sequential path analysis gave a somewhat different picture from what the normal model path analysis did.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"79-91"},"PeriodicalIF":0.5,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49148574","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 : 2020-04-01DOI: 10.21608/agro.2020.18986.1189
Y. Khalifa, G. A. El-Naem, M. A. Mahmoud
A field experiment was carried out during seasons 2017/2018 and 2018/2019 seasons to study the effects of spraying Tryptophan and Ascorbic acid on yield components and chemical composition of plants . using two cultivars Giza-1 and Giza-2 of lupine plants. Foliar spray of Tryptophan at rate (Trp. : 25 and 50 mg /L) Ascorbic acid (A A: 100 and 200 mg /L)either alone, or their combination and control. The effect of the previous treatments on some vegetative growth criteria namely{ plant height (cm), pod length (cm), number of branches/ plant, weight of 100 seeds, and seed yield / plant(g) and seed yield / fed(ton) } wear investigated as well as chemical composition such as, total nitrogen, crude protein (CP),total soluble sugars (TSS), crude lipids (CL), total alkaloids (TAs), and total phenolic compounds (TPCs). Results indicated that foliar application Tryptophan and Ascorbic acid significantly improve yield and chemical composition. Trp. was more effective than A. A. in raising lupine yield, significantly increased yield of lupine plants, plant height (cm), pod length (cm), number of branches/ plant, weight of 100 seeds and seed yield/ plant(g) and seed yield / fed(ton). Total nitrogen, crude protein (CP),total soluble sugars (TSS), crude lipids (CL), total alkaloid (TAs), and total phenolic compounds (TPCs). in seeds lupine were significantly enhancement by mounting Trp. from 25to 50 mg /L and/or A.A. concentrations up to 100 and 200 mg/L.
{"title":"Effect of Tryptophan and Ascorbic Acid on Yield and Some Chemical Constituents of Lupine ( Lupines termis L.) Plants","authors":"Y. Khalifa, G. A. El-Naem, M. A. Mahmoud","doi":"10.21608/agro.2020.18986.1189","DOIUrl":"https://doi.org/10.21608/agro.2020.18986.1189","url":null,"abstract":"A field experiment was carried out during seasons 2017/2018 and 2018/2019 seasons to study the effects of spraying Tryptophan and Ascorbic acid on yield components and chemical composition of plants . using two cultivars Giza-1 and Giza-2 of lupine plants. Foliar spray of Tryptophan at rate (Trp. : 25 and 50 mg /L) Ascorbic acid (A A: 100 and 200 mg /L)either alone, or their combination and control. The effect of the previous treatments on some vegetative growth criteria namely{ plant height (cm), pod length (cm), number of branches/ plant, weight of 100 seeds, and seed yield / plant(g) and seed yield / fed(ton) } wear investigated as well as chemical composition such as, total nitrogen, crude protein (CP),total soluble sugars (TSS), crude lipids (CL), total alkaloids (TAs), and total phenolic compounds (TPCs). Results indicated that foliar application Tryptophan and Ascorbic acid significantly improve yield and chemical composition. Trp. was more effective than A. A. in raising lupine yield, significantly increased yield of lupine plants, plant height (cm), pod length (cm), number of branches/ plant, weight of 100 seeds and seed yield/ plant(g) and seed yield / fed(ton). Total nitrogen, crude protein (CP),total soluble sugars (TSS), crude lipids (CL), total alkaloid (TAs), and total phenolic compounds (TPCs). in seeds lupine were significantly enhancement by mounting Trp. from 25to 50 mg /L and/or A.A. concentrations up to 100 and 200 mg/L.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"47-61"},"PeriodicalIF":0.5,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42321708","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 : 2020-01-23DOI: 10.21608/agro.2020.18518.1187
S. Emam
TWO years field work were accomplished at Demo experimental farm, Faculty of Agriculture, Fayoum University, Egypt during 2015/2016 and 2016/2017 years to study the effect of Mn, Fe and Zn foliar spraying on three flax cultivars productivity. The arrangement of split-plot in RCBD with three replications was applied. Three flax cultivars (Sakha-1, Sakha-2 and Giza-9) occupied the main plots while, three micro-nutrients levels (Zero, 300 and 600ppm fed-1) distributed in the sub-plot. The form of applied micro-nutrients was EDTA 13% Mn, EDDHSA 6% Fe and EDTA 14% Zn. Results showed that Sakha-1 exceeded other cultivars in straw yield parameters (i.e., plant height, technical stem height and straw yield. While, Sakha-2 cultivar gave utmost values of stem diameter and number of branches plant-1 as well as seed yield traits (i.e., number of fruiting branches plant-1, fruiting zone length, number of capsules plant-1, 1000-seed weight and seed and oil yields. Seed oil and micro-nutrients (Mn, Fe and Zn) content were highest with Sakha-2 variety. Micro-nutrients foliar spraying at 600ppm/ feddan gave significantly the highest values for all traits two years as compared to zero or 300ppm/feddan. There are two traits, i.e., 1000-seed weight and number of fruiting branches plant-1 in 2015/2016 year and two ones, i.e., seed yield plant-1 and number of capsules plant-1 in 2016/2017 year, were significantly (P≤0.001) participated to variation in seed yield/feddan.
{"title":"Estimation of Straw, Seed and Oil Yields for Flax Plants ( Linum usitatissimum L.) Cultivars of Foliar Application of Mn, Fe and Zn under Dry Environment","authors":"S. Emam","doi":"10.21608/agro.2020.18518.1187","DOIUrl":"https://doi.org/10.21608/agro.2020.18518.1187","url":null,"abstract":"TWO years field work were accomplished at Demo experimental farm, Faculty of Agriculture, Fayoum University, Egypt during 2015/2016 and 2016/2017 years to study the effect of Mn, Fe and Zn foliar spraying on three flax cultivars productivity. The arrangement of split-plot in RCBD with three replications was applied. Three flax cultivars (Sakha-1, Sakha-2 and Giza-9) occupied the main plots while, three micro-nutrients levels (Zero, 300 and 600ppm fed-1) distributed in the sub-plot. The form of applied micro-nutrients was EDTA 13% Mn, EDDHSA 6% Fe and EDTA 14% Zn. Results showed that Sakha-1 exceeded other cultivars in straw yield parameters (i.e., plant height, technical stem height and straw yield. While, Sakha-2 cultivar gave utmost values of stem diameter and number of branches plant-1 as well as seed yield traits (i.e., number of fruiting branches plant-1, fruiting zone length, number of capsules plant-1, 1000-seed weight and seed and oil yields. Seed oil and micro-nutrients (Mn, Fe and Zn) content were highest with Sakha-2 variety. Micro-nutrients foliar spraying at 600ppm/ feddan gave significantly the highest values for all traits two years as compared to zero or 300ppm/feddan. There are two traits, i.e., 1000-seed weight and number of fruiting branches plant-1 in 2015/2016 year and two ones, i.e., seed yield plant-1 and number of capsules plant-1 in 2016/2017 year, were significantly (P≤0.001) participated to variation in seed yield/feddan.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"35-46"},"PeriodicalIF":0.5,"publicationDate":"2020-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42984002","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 : 2020-01-12DOI: 10.21608/agro.2020.19220.1191
Doaa Mohamed Elnaggar, Walid Elorabay, M. Gad, Gamalat A. Hermas
Survey of wheat stem rust pathotypes and their identification using monogenic lines is significant in characterising virulence type variation, the geographical distribution of races. Variance in the population of the pathotypes is detected yearly utilising wheat stem samples collected from cultivated areas in Egypt. In our study, a sum of 104 and 40 wheat samples of stem rust were collected during growing seasons 2015/2016 and 2016/2017, respectively, from six locations, Beheira, Kafr-Elsheikh, Sharqiya, Minufiya, Bani Sweif, and Sohag. A sum of 70 and 53 races was isolated from samples collected in the previous years and identified in 2016/2017 and 2017/2018, respectively. The more frequent races involved TKTTC (18.25%) in 2015/2016 as well as PKSTC (6.25 %) in 2016/2017. For 2015/16, 26 pathotypes identified in Kafr-Elsheikh, which considered the most abundant population size (34.28 %), while for 2016/17, the Sharqiya governorate rated to be the most significant pathogen population size more than another population studied (49.05 %). Lines with Sr24, Sr38, and Sr31 genes were showed the highest gene efficacy against race groups, while the other genes displayed another reaction with the examined race groups
{"title":"Characterization of Virulence and Diversity of Puccinia graminis f. sp. tritici on Wheat in Egypt","authors":"Doaa Mohamed Elnaggar, Walid Elorabay, M. Gad, Gamalat A. Hermas","doi":"10.21608/agro.2020.19220.1191","DOIUrl":"https://doi.org/10.21608/agro.2020.19220.1191","url":null,"abstract":"Survey of wheat stem rust pathotypes and their identification using monogenic lines is significant in characterising virulence type variation, the geographical distribution of races. Variance in the population of the pathotypes is detected yearly utilising wheat stem samples collected from cultivated areas in Egypt. In our study, a sum of 104 and 40 wheat samples of stem rust were collected during growing seasons 2015/2016 and 2016/2017, respectively, from six locations, Beheira, Kafr-Elsheikh, Sharqiya, Minufiya, Bani Sweif, and Sohag. A sum of 70 and 53 races was isolated from samples collected in the previous years and identified in 2016/2017 and 2017/2018, respectively. The more frequent races involved TKTTC (18.25%) in 2015/2016 as well as PKSTC (6.25 %) in 2016/2017. For 2015/16, 26 pathotypes identified in Kafr-Elsheikh, which considered the most abundant population size (34.28 %), while for 2016/17, the Sharqiya governorate rated to be the most significant pathogen population size more than another population studied (49.05 %). Lines with Sr24, Sr38, and Sr31 genes were showed the highest gene efficacy against race groups, while the other genes displayed another reaction with the examined race groups","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":"42 1","pages":"19-34"},"PeriodicalIF":0.5,"publicationDate":"2020-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47549908","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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