Pub Date : 2021-02-02DOI: 10.21608/AGRO.2021.51398.1240
E. Salem
Saltiness is the most restricting factor for agriculture in arid and semi-arid regions, in addition to zinc is deposited in forms not accessible to plants in calcareous soils. Generally, less availability of nutrients associated salinity is a stumbling block in front of the agricultural expansion. Therefore, during the 2018 and 2019 seasons, two field experiments were conducted at the Desert Research Center, Agriculture Experimental Station at Ras Sudr, South Sinai Governorate, Egypt. The cooperative impact of seed priming by soaking seeds in ascorbic acid at 0, 100, 200, and 300 mg ASC/L and the soil application of zinc at the rates of 0, 3, 6, 12, and 24 kg zinc sulfate/ha on sunflower yields and its attributes were studied. The results reported that plant height, head diameter, number of seeds/head, seed weight/head, seed index, in addition to biological, seed and oil yields and seed oil content responded considerably to ascorbic acid (ASC) in both seasons. In this connection, sunflower seeds soaked in 200 mg ASC/L was the Potency practice compared to other treatments in both years. While zinc application (ZnSO4) significantly affected all the aforementioned traits in both seasons. The findings of this study suggest that soaking sunflower seeds in 200 mg/L ASC alongside with ZnSO4 fertilization at a rate of 12 kg/ha could be used to alleviate the harmful effects of salinity stress and consequently could improve the sunflower yield.
{"title":"Effect of Ascorbic Acid and Zinc on the Productivity of Sunflower (Helianthus annuus L.) under Saline Stress Conditions","authors":"E. Salem","doi":"10.21608/AGRO.2021.51398.1240","DOIUrl":"https://doi.org/10.21608/AGRO.2021.51398.1240","url":null,"abstract":"Saltiness is the most restricting factor for agriculture in arid and semi-arid regions, in addition to zinc is deposited in forms not accessible to plants in calcareous soils. Generally, less availability of nutrients associated salinity is a stumbling block in front of the agricultural expansion. Therefore, during the 2018 and 2019 seasons, two field experiments were conducted at the Desert Research Center, Agriculture Experimental Station at Ras Sudr, South Sinai Governorate, Egypt. The cooperative impact of seed priming by soaking seeds in ascorbic acid at 0, 100, 200, and 300 mg ASC/L and the soil application of zinc at the rates of 0, 3, 6, 12, and 24 kg zinc sulfate/ha on sunflower yields and its attributes were studied. The results reported that plant height, head diameter, number of seeds/head, seed weight/head, seed index, in addition to biological, seed and oil yields and seed oil content responded considerably to ascorbic acid (ASC) in both seasons. In this connection, sunflower seeds soaked in 200 mg ASC/L was the Potency practice compared to other treatments in both years. While zinc application (ZnSO4) significantly affected all the aforementioned traits in both seasons. The findings of this study suggest that soaking sunflower seeds in 200 mg/L ASC alongside with ZnSO4 fertilization at a rate of 12 kg/ha could be used to alleviate the harmful effects of salinity stress and consequently could improve the sunflower yield.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":" ","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2021-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48544221","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 : 2021-01-27DOI: 10.21608/AGRO.2021.33773.1220
G. Abbas, M. Ahsan, M. Asghar, M. Rizwan, F. Ahmad, M. Akram
Seventy two Mungbean × Mashbean recombinant genotypes were evaluated in the field for seed yield and its components traits. Highly significant differences were observed among the genotypes. The magnitudes of genotypic and phenotypic coefficients of variability ranged from 2.73% to 28.97% and 3.46% to 31.95%, respectively. Pods per plant exhibited maximum amount of genetic variability followed by clusters per plant and seed yield per plant. 100-seed weight was observed to be the most heritable trait with greatest magnitude (h2 = 99%). Pods per plant had maximum positive and significant genotypic (rg = 0.90) and phenotypic (rp = 0.86) correlations with clusters per plant. Both traits were identified as the most important characters as they had strong genetic and phenotypic relationships with seed yield. Selection for number of pods per plant among different agronomic traits showed greatest improvement in seed yield that was 54% of the improvement possible through direct selection for seed yield. Likewise, clusters per plant and plant height also showed higher improvement in seed yield through indirect selection which was 29% and 20% of the improvement possible by direct selection for yield. Days to flowering also showed promise for 8% of the improvement in seed yield possible through direct selection for seed yield. Thirty six promising recombinants were selected on the basis of desirability index. On the basis of overall performance seven recombinant genotypes, viz; MMH 1115, MMH 4224, MMH 4255, MMH 7124, MMH 2112, MMH 4295 and MMH 2225 were selected as elite lines.
{"title":"Evaluation of Genetic Parameters for Yield and Related Traits in new Recombinants interspecific Mungbean × Mashbean Genotypes","authors":"G. Abbas, M. Ahsan, M. Asghar, M. Rizwan, F. Ahmad, M. Akram","doi":"10.21608/AGRO.2021.33773.1220","DOIUrl":"https://doi.org/10.21608/AGRO.2021.33773.1220","url":null,"abstract":"Seventy two Mungbean × Mashbean recombinant genotypes were evaluated in the field for seed yield and its components traits. Highly significant differences were observed among the genotypes. The magnitudes of genotypic and phenotypic coefficients of variability ranged from 2.73% to 28.97% and 3.46% to 31.95%, respectively. Pods per plant exhibited maximum amount of genetic variability followed by clusters per plant and seed yield per plant. 100-seed weight was observed to be the most heritable trait with greatest magnitude (h2 = 99%). Pods per plant had maximum positive and significant genotypic (rg = 0.90) and phenotypic (rp = 0.86) correlations with clusters per plant. Both traits were identified as the most important characters as they had strong genetic and phenotypic relationships with seed yield. Selection for number of pods per plant among different agronomic traits showed greatest improvement in seed yield that was 54% of the improvement possible through direct selection for seed yield. Likewise, clusters per plant and plant height also showed higher improvement in seed yield through indirect selection which was 29% and 20% of the improvement possible by direct selection for yield. Days to flowering also showed promise for 8% of the improvement in seed yield possible through direct selection for seed yield. Thirty six promising recombinants were selected on the basis of desirability index. On the basis of overall performance seven recombinant genotypes, viz; MMH 1115, MMH 4224, MMH 4255, MMH 7124, MMH 2112, MMH 4295 and MMH 2225 were selected as elite lines.","PeriodicalId":42226,"journal":{"name":"Egyptian Journal of Agronomy","volume":" ","pages":"0-0"},"PeriodicalIF":0.5,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41717416","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 : 2021-01-22DOI: 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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：