To screen new maize(Zea mays L.)varieties suitable for food and fodder dual-purpose in Du'an Yao Autonomous County of Guangxi,the agronomic characters,yield and quality indexes of 12 new maize varieties were measu...To screen new maize(Zea mays L.)varieties suitable for food and fodder dual-purpose in Du'an Yao Autonomous County of Guangxi,the agronomic characters,yield and quality indexes of 12 new maize varieties were measured,and the correlation between various indexes were analyzed,and the comprehensive performance of tested varieties was evaluated by membership function method.The results showed that Guidan 671 had the highest grain yield and whole-plant biomass at 10908 and 49965 kg/hm^(2),respectively,and the second was Zhaoyu 215 with a grain yield and whole-plant biomass of 10086 and 47175 kg/hm^(2),respectively.Grain yield was highly significantly positively correlated with ear diameter and 100-grain weight(P<0.01),and significantly correlated with whole-plant biomass,starch content,ear length and grain number per row(P<0.05);and the whole-plant biomass was highly significantly correlated with the number of grains per row(P<0.01),and significantly correlated with starch content,panicle length,plant height and panicle height(P<0.05).The comprehensive performance scores of the tested varieties from high to low were Guidan 671,Zhaoyu 215,Guidan 669,Guidan 6208,Guidan 666,Guidan 6205,Guidan 660,Guidan 6203,Guidan 6206,Guidan 162,Guidan 668 and Guidan 673.According to the values of membership function and combined with various indexes,Guidan 671 and Zhaoyu 215 had good comprehensive performance,and could be used as the first choice for food and fodder dual-purpose maize varieties in Du'an Yao Autonomous County.展开更多
[Objectives]Aluminum toxicity is one of the important stress factors affecting sugarcane quality and yield in south China,breeding aluminum tolerant varieties is a cost-effective and practical way.In order to explore ...[Objectives]Aluminum toxicity is one of the important stress factors affecting sugarcane quality and yield in south China,breeding aluminum tolerant varieties is a cost-effective and practical way.In order to explore the characteristics of aluminum toxicity tolerance in different sugarcane varieties and establish the comprehensive evaluation system for screening and breeding new varieties with aluminum toxicity tolerance,this study was conducted to perform comprehensive evaluation of aluminum tolerance in different sugarcane varieties and screening of identification indexes.[Methods]With 26 sugarcane varieties bred in different ecological areas as materials,through a pot experiment,nine indexes which include sugarcane plant height,root length,shoot dry weight,root dry weight,root-shoot ratio,relative chlorophyll content,leaf proline content,and shoot and root aluminum contents at the seedling stage under acid-aluminum stress and control conditions were measured,and the aluminum toxicity tolerance coefficients of various indexes of each variety were calculated.On this basis,the aluminum tolerance of all varieties was comprehensively evaluated by principal component analysis,subordinate function,cluster analysis and stepwise regression analysis.[Results]Compared with the control,the nine indexes showed more abundant variation among the 26 varieties under acid-aluminum stress.The correlation analysis confirmed that the contributions of the nine measured indexes to aluminum tolerance were significantly overlapped,and the subsequent principal component analysis summarized and combined the ones with strong correlation among the nine indexes,converting them into two new independent comprehensive indexes.The cumulative contribution rate showed that the two new indexes covered 82.448%of the information of the original nine indexes.Then,the comprehensive evaluation D values of the acid-aluminum tolerance of the 26 varieties were calculated based on the subordinate function values combined with the weights of the contribution rates of the two new comprehensive indexes.By clustering analysis on the D values,the 26 varieties were divided into 3 groups.Three varieties with the highest D values among the 26 varieties,Yunzhe 11-1074,Zhongtang 2 and Haizhe 28,were classified as varieties with strong aluminum tolerance,and 11 varieties including Yuegan 56 and Guitang 58,were moderately aluminum tolerant,while 12 varieties including Haizhe 32 and Yunrui 10-187 were sensitive to aluminum stress.Finally,the optimal regression equation analysis was carried out with the comprehensive evaluation D value of aluminum tolerance as the dependent variable and the aluminum toxicity tolerance coefficients of various indexes as independent variables,and the evaluation model of aluminum tolerance in sugarcane was established.Root length,root dry weight,relative chlorophyll content,leaf proline content,shoot aluminum content and root aluminum content,which had significant effects on aluminum tolerance of sugarcane seedlings,were selected as the evaluation indexes of acid-aluminum tolerance of sugarcane seedlings.[Conclusions]This study not only obtained a number of aluminum-tolerant varieties,but also provides a theoretical basis and reference for future genetic breeding of aluminum-tolerant sugarcane.展开更多
With global warming,heat stress is becoming a more frequent event and a major limiting factor for crop production.The evaluation of thermo-tolerance is essential for the cultivators to obtain the heat resistant genoty...With global warming,heat stress is becoming a more frequent event and a major limiting factor for crop production.The evaluation of thermo-tolerance is essential for the cultivators to obtain the heat resistant genotypes and breeders to improve the thermo-tolerance of plants.Therefore,it is very important to perfect the existing evaluation system for thermo-tolerance.In this study,30 tomato genotypes were treated with heat stress at germination,seedling and flowering stages.Each index was different and diverse in different tomato genotypes by doing variability analysis,difference analysis and Student's t test.Before principal component analysis(PCA),a positive treatment for the negative and moderation indexes was performed.After correlation analysis,the authors performed PCA(including dimensionality reduction(DR),no dimensionality reduction(NDR)and optimal index(OI)),combining with subordinate function(SF),weight and cluster analysis.No matter at germination or seedling stage,the members of the groups were basically identical for DR,NDR and OI.Then 10 tomato genotypes were chosen from 30 randomly for verification.Compared all the evaluation systems,OI was the simplest and also could get as credible results as other methods.Therefore,in this study,OI could be adopted and improve the efficiency during the evaluation.At germination stage,germination power(GP)can accurately evaluate the thermo-tolerance,and at seedling stage,it was fresh weight(FW),internode length(IL)and dry matter percentage of seedling(DMP).Finally,all the indexes in the three stages were applied correlation analysis.Seedling stage showed significant positive correlation with flowering stage.In conclusion,this work improves the current system and set up a new comprehensive evaluation method named OI,which also improves the efficiency,guarantees reliability in screening thermo-tolerance of tomato for cultivators and expedites the process of breeding for resistance.展开更多
In order to improve the accuracy of English teaching quality evaluation, so as to promote the quality of English teaching, an evaluation method of English teaching quality is proposed based on fuzzy comprehensive eval...In order to improve the accuracy of English teaching quality evaluation, so as to promote the quality of English teaching, an evaluation method of English teaching quality is proposed based on fuzzy comprehensive evaluation, the index system model of English teaching quality evaluation is constructed, a decision tree model is used for construction of English teaching quality index model, objective function of English teaching quality evaluation is constructed based on fuzzy decision model, the conjugate function analysis method is used to optimize the decision function, the attributes that can reflect the quality of English Teaching is extracted, accurate evaluation and prediction of English teaching quality are realized. The simulation results show that the method of English teaching quality evaluation is reliable, it has high degree of confidence, evaluation result is accurate.展开更多
There are many uncertain factors,such as stochastic,fuzzy and gray information in the risk analysis on natural hazard.The set pair analysis(SPA)deals effectively with the various uncertain factors contributing to eval...There are many uncertain factors,such as stochastic,fuzzy and gray information in the risk analysis on natural hazard.The set pair analysis(SPA)deals effectively with the various uncertain factors contributing to evaluation of the risk level of natural disasters.The evaluation indicators and standards of natural disasters risk are analyzed by identity-discrepancycontrary(IDC).The result,the connection numbers,still has uncertainty information.Thus,yielding the risk evaluation model of natural disasters based on connection function,which construct a set pair relation between the indicators of connection numbers and comprehensive evaluation standards,and describe uncertainty of the connection numbers by using connection function.The study showed that the proposed model takes into account only the uncertainty of risk evaluation indicator identification on natural disasters,also the uncertainty of result connection numbers.This approach gives full consideration to the uncertainty of systematic evaluation process along with the actual meaning of comprehensive evaluation functions.Therefore,this means it is able to reduce the uncertainty of final evaluation results and improve the accuracy and reasonability of evaluation results.This model is capable of reflecting actual situation of the risk evaluation on natural disaster affected by various uncertain factors and has a promotional value in the natural disaster risk assessment.展开更多
[Objectives]To identify the drought resistance of main wheat varieties in Shandong Province and screen suitable cultivars for dryland cultivation.[Methods]Employing eight varieties including Jimai 60 as test materials...[Objectives]To identify the drought resistance of main wheat varieties in Shandong Province and screen suitable cultivars for dryland cultivation.[Methods]Employing eight varieties including Jimai 60 as test materials,this study simulated drought stress using 20%PEG-6000 and measured changes in germination-stage indicators.A comprehensive evaluation was conducted using the membership function method,incorporating relative coleoptile length,relative germ length,relative radicle length,relative germination rate,relative germination potential,and stress germination index.[Results]Drought stress not only reduced wheat seed germination rate but also inhibited the growth of the germ,coleoptile,and radicle.The D values of the eight varieties were ranked as follows:Jimai 60>Linmai 9>Yannong 999>Shannong 30>Shannong 28>Luyuan 502>Yannong 1212>Jimai 22.Based on D values,the eight dominant wheat varieties were classified into three categories:highly drought-resistant varieties(Linmai 9 and Jimai 60),moderately drought-resistant varieties(Yannong 999 and Shannong 30),and sensitive varieties(the others).Linmai 9 and Jimai 60 are recommended as suitable wheat varieties for dryland cultivation in Shandong Province.[Conclusions]Drought stress induced by 20%PEG-6000 reduced germination rate,germination potential,and germination index of wheat varieties while inhibiting the growth of coleoptiles and radicles.These indicators can provide a preliminary assessment of drought resistance in wheat cultivars.However,since filter paper was selected as the growth medium,root length measurement errors were introduced during root washing,leading to variations in final experimental results.Futuer studies could attempt using sterilized sand as an alternative growth medium.展开更多
As the global population ages,the incidence of cancer among older adults is increasing.The management of older patients with cancer poses unique challenges due to the age-related physiological changes,multiple comorbi...As the global population ages,the incidence of cancer among older adults is increasing.The management of older patients with cancer poses unique challenges due to the age-related physiological changes,multiple comorbidities,and functional decline often observed in this population.Comprehensive Geriatric Assessment(CGA)has emerged as a valuable tool in oncology to evaluate the overall health and functional status of older cancer patients in order to optimise cancer care for older adults.This comprehensive approach acknowledges the unique challenges faced by elderly patients with cancer and seeks to optimize outcomes by considering their specific circumstances and individual requirements.展开更多
为了解陕西葡萄酒产区土壤养分丰缺状况,采集陕北高原、渭北旱塬、关中平原、陕南山岭4个子产区共17家酒庄的0~20、20~40、40~60 cm 3个深度的土壤样品,测定土壤理化指标,分析土壤养分含量差异,并通过隶属度函数和主成分分析对不同产区...为了解陕西葡萄酒产区土壤养分丰缺状况,采集陕北高原、渭北旱塬、关中平原、陕南山岭4个子产区共17家酒庄的0~20、20~40、40~60 cm 3个深度的土壤样品,测定土壤理化指标,分析土壤养分含量差异,并通过隶属度函数和主成分分析对不同产区的土壤综合肥力状况进行评价。结果表明,陕西葡萄酒产区土壤容重均值大于1.50 g·cm^(-3),呈现南低北高的趋势。陕北高原子产区土壤为碱性,砂粒占比超过80%,质地为砂土;关中平原子产区土壤为中性,其余子产区为弱碱性,质地为壤土。陕西葡萄酒产区土壤养分状况南北差异显著,主要呈现由北向南先增加后减少的趋势。表层土壤有机质、全氮和全磷达到3级及以上的区域分别占45.10%、62.74%、54.90%,深层土壤多数处于养分匮乏状况;钾含量整体较为丰富。土壤综合肥力指数得分依次为:关中平原>陕南山岭>渭北旱塬>陕北高原。土壤全氮和有机质为土壤肥力主要限制因子。展开更多
In this paper, we propose a multilayer multiobjective fuzzy comprehensive evaluation (MMFCE) method for assessing simulation schemes of socio-economyic systems of China. In this MMFCE method, multiple methods to dete...In this paper, we propose a multilayer multiobjective fuzzy comprehensive evaluation (MMFCE) method for assessing simulation schemes of socio-economyic systems of China. In this MMFCE method, multiple methods to determine membership grades of evaluation matrix, the procedure to determine multiobjective weights and multiple combination strategies of fuzzy operations under different evaluation rules are presented. And in this paper, we also describe the application of the MMFCE method in assessing several simulation schemes of socio-economic systems of China. Thus,the MMFCE method can be used by policy-makers in China to evaluate and compare alternative policies for socio-economic development of China.展开更多
基金Supported by Guangxi Key Research and Development Plan(GK AB21196052)Guangxi Science and Technology Planning Project(GK AD20297117)+2 种基金Guangxi Science and Technology Major Project(GK AA17204064-4)Special Project of Basic Scientific Research Business of Guangxi Academy of Agricultural Sciences(GNK 2021YT015GNK 2020YM90)。
文摘To screen new maize(Zea mays L.)varieties suitable for food and fodder dual-purpose in Du'an Yao Autonomous County of Guangxi,the agronomic characters,yield and quality indexes of 12 new maize varieties were measured,and the correlation between various indexes were analyzed,and the comprehensive performance of tested varieties was evaluated by membership function method.The results showed that Guidan 671 had the highest grain yield and whole-plant biomass at 10908 and 49965 kg/hm^(2),respectively,and the second was Zhaoyu 215 with a grain yield and whole-plant biomass of 10086 and 47175 kg/hm^(2),respectively.Grain yield was highly significantly positively correlated with ear diameter and 100-grain weight(P<0.01),and significantly correlated with whole-plant biomass,starch content,ear length and grain number per row(P<0.05);and the whole-plant biomass was highly significantly correlated with the number of grains per row(P<0.01),and significantly correlated with starch content,panicle length,plant height and panicle height(P<0.05).The comprehensive performance scores of the tested varieties from high to low were Guidan 671,Zhaoyu 215,Guidan 669,Guidan 6208,Guidan 666,Guidan 6205,Guidan 660,Guidan 6203,Guidan 6206,Guidan 162,Guidan 668 and Guidan 673.According to the values of membership function and combined with various indexes,Guidan 671 and Zhaoyu 215 had good comprehensive performance,and could be used as the first choice for food and fodder dual-purpose maize varieties in Du'an Yao Autonomous County.
基金Supported by 2019 Hainan Provincial Fund High level Talent Project(2019RC291).
文摘[Objectives]Aluminum toxicity is one of the important stress factors affecting sugarcane quality and yield in south China,breeding aluminum tolerant varieties is a cost-effective and practical way.In order to explore the characteristics of aluminum toxicity tolerance in different sugarcane varieties and establish the comprehensive evaluation system for screening and breeding new varieties with aluminum toxicity tolerance,this study was conducted to perform comprehensive evaluation of aluminum tolerance in different sugarcane varieties and screening of identification indexes.[Methods]With 26 sugarcane varieties bred in different ecological areas as materials,through a pot experiment,nine indexes which include sugarcane plant height,root length,shoot dry weight,root dry weight,root-shoot ratio,relative chlorophyll content,leaf proline content,and shoot and root aluminum contents at the seedling stage under acid-aluminum stress and control conditions were measured,and the aluminum toxicity tolerance coefficients of various indexes of each variety were calculated.On this basis,the aluminum tolerance of all varieties was comprehensively evaluated by principal component analysis,subordinate function,cluster analysis and stepwise regression analysis.[Results]Compared with the control,the nine indexes showed more abundant variation among the 26 varieties under acid-aluminum stress.The correlation analysis confirmed that the contributions of the nine measured indexes to aluminum tolerance were significantly overlapped,and the subsequent principal component analysis summarized and combined the ones with strong correlation among the nine indexes,converting them into two new independent comprehensive indexes.The cumulative contribution rate showed that the two new indexes covered 82.448%of the information of the original nine indexes.Then,the comprehensive evaluation D values of the acid-aluminum tolerance of the 26 varieties were calculated based on the subordinate function values combined with the weights of the contribution rates of the two new comprehensive indexes.By clustering analysis on the D values,the 26 varieties were divided into 3 groups.Three varieties with the highest D values among the 26 varieties,Yunzhe 11-1074,Zhongtang 2 and Haizhe 28,were classified as varieties with strong aluminum tolerance,and 11 varieties including Yuegan 56 and Guitang 58,were moderately aluminum tolerant,while 12 varieties including Haizhe 32 and Yunrui 10-187 were sensitive to aluminum stress.Finally,the optimal regression equation analysis was carried out with the comprehensive evaluation D value of aluminum tolerance as the dependent variable and the aluminum toxicity tolerance coefficients of various indexes as independent variables,and the evaluation model of aluminum tolerance in sugarcane was established.Root length,root dry weight,relative chlorophyll content,leaf proline content,shoot aluminum content and root aluminum content,which had significant effects on aluminum tolerance of sugarcane seedlings,were selected as the evaluation indexes of acid-aluminum tolerance of sugarcane seedlings.[Conclusions]This study not only obtained a number of aluminum-tolerant varieties,but also provides a theoretical basis and reference for future genetic breeding of aluminum-tolerant sugarcane.
基金This work was supported by grants from the Natural Science Foundation of Youth Jiangsu Province(BIC20160579).
文摘With global warming,heat stress is becoming a more frequent event and a major limiting factor for crop production.The evaluation of thermo-tolerance is essential for the cultivators to obtain the heat resistant genotypes and breeders to improve the thermo-tolerance of plants.Therefore,it is very important to perfect the existing evaluation system for thermo-tolerance.In this study,30 tomato genotypes were treated with heat stress at germination,seedling and flowering stages.Each index was different and diverse in different tomato genotypes by doing variability analysis,difference analysis and Student's t test.Before principal component analysis(PCA),a positive treatment for the negative and moderation indexes was performed.After correlation analysis,the authors performed PCA(including dimensionality reduction(DR),no dimensionality reduction(NDR)and optimal index(OI)),combining with subordinate function(SF),weight and cluster analysis.No matter at germination or seedling stage,the members of the groups were basically identical for DR,NDR and OI.Then 10 tomato genotypes were chosen from 30 randomly for verification.Compared all the evaluation systems,OI was the simplest and also could get as credible results as other methods.Therefore,in this study,OI could be adopted and improve the efficiency during the evaluation.At germination stage,germination power(GP)can accurately evaluate the thermo-tolerance,and at seedling stage,it was fresh weight(FW),internode length(IL)and dry matter percentage of seedling(DMP).Finally,all the indexes in the three stages were applied correlation analysis.Seedling stage showed significant positive correlation with flowering stage.In conclusion,this work improves the current system and set up a new comprehensive evaluation method named OI,which also improves the efficiency,guarantees reliability in screening thermo-tolerance of tomato for cultivators and expedites the process of breeding for resistance.
文摘In order to improve the accuracy of English teaching quality evaluation, so as to promote the quality of English teaching, an evaluation method of English teaching quality is proposed based on fuzzy comprehensive evaluation, the index system model of English teaching quality evaluation is constructed, a decision tree model is used for construction of English teaching quality index model, objective function of English teaching quality evaluation is constructed based on fuzzy decision model, the conjugate function analysis method is used to optimize the decision function, the attributes that can reflect the quality of English Teaching is extracted, accurate evaluation and prediction of English teaching quality are realized. The simulation results show that the method of English teaching quality evaluation is reliable, it has high degree of confidence, evaluation result is accurate.
基金supported by the auspices of National Natural Science Foundation of China(No.51079037)Opening Foundation of Chengdu Institute of Plateau Meteorology,China Meteorological Administration(LPM2011002)Natural Science Foundation of Anhui Province(No.1208085ME75)
文摘There are many uncertain factors,such as stochastic,fuzzy and gray information in the risk analysis on natural hazard.The set pair analysis(SPA)deals effectively with the various uncertain factors contributing to evaluation of the risk level of natural disasters.The evaluation indicators and standards of natural disasters risk are analyzed by identity-discrepancycontrary(IDC).The result,the connection numbers,still has uncertainty information.Thus,yielding the risk evaluation model of natural disasters based on connection function,which construct a set pair relation between the indicators of connection numbers and comprehensive evaluation standards,and describe uncertainty of the connection numbers by using connection function.The study showed that the proposed model takes into account only the uncertainty of risk evaluation indicator identification on natural disasters,also the uncertainty of result connection numbers.This approach gives full consideration to the uncertainty of systematic evaluation process along with the actual meaning of comprehensive evaluation functions.Therefore,this means it is able to reduce the uncertainty of final evaluation results and improve the accuracy and reasonability of evaluation results.This model is capable of reflecting actual situation of the risk evaluation on natural disaster affected by various uncertain factors and has a promotional value in the natural disaster risk assessment.
基金Supported by National Wheat Industry Technology System"Linyi Integrated Experimental Station"(CARS-03-66)Shandong Provincial Modern Agricultural Industry Technology System"Linyi Integrated Experimental Station"(SDATT-01-18).
文摘[Objectives]To identify the drought resistance of main wheat varieties in Shandong Province and screen suitable cultivars for dryland cultivation.[Methods]Employing eight varieties including Jimai 60 as test materials,this study simulated drought stress using 20%PEG-6000 and measured changes in germination-stage indicators.A comprehensive evaluation was conducted using the membership function method,incorporating relative coleoptile length,relative germ length,relative radicle length,relative germination rate,relative germination potential,and stress germination index.[Results]Drought stress not only reduced wheat seed germination rate but also inhibited the growth of the germ,coleoptile,and radicle.The D values of the eight varieties were ranked as follows:Jimai 60>Linmai 9>Yannong 999>Shannong 30>Shannong 28>Luyuan 502>Yannong 1212>Jimai 22.Based on D values,the eight dominant wheat varieties were classified into three categories:highly drought-resistant varieties(Linmai 9 and Jimai 60),moderately drought-resistant varieties(Yannong 999 and Shannong 30),and sensitive varieties(the others).Linmai 9 and Jimai 60 are recommended as suitable wheat varieties for dryland cultivation in Shandong Province.[Conclusions]Drought stress induced by 20%PEG-6000 reduced germination rate,germination potential,and germination index of wheat varieties while inhibiting the growth of coleoptiles and radicles.These indicators can provide a preliminary assessment of drought resistance in wheat cultivars.However,since filter paper was selected as the growth medium,root length measurement errors were introduced during root washing,leading to variations in final experimental results.Futuer studies could attempt using sterilized sand as an alternative growth medium.
文摘As the global population ages,the incidence of cancer among older adults is increasing.The management of older patients with cancer poses unique challenges due to the age-related physiological changes,multiple comorbidities,and functional decline often observed in this population.Comprehensive Geriatric Assessment(CGA)has emerged as a valuable tool in oncology to evaluate the overall health and functional status of older cancer patients in order to optimise cancer care for older adults.This comprehensive approach acknowledges the unique challenges faced by elderly patients with cancer and seeks to optimize outcomes by considering their specific circumstances and individual requirements.
文摘为了解陕西葡萄酒产区土壤养分丰缺状况,采集陕北高原、渭北旱塬、关中平原、陕南山岭4个子产区共17家酒庄的0~20、20~40、40~60 cm 3个深度的土壤样品,测定土壤理化指标,分析土壤养分含量差异,并通过隶属度函数和主成分分析对不同产区的土壤综合肥力状况进行评价。结果表明,陕西葡萄酒产区土壤容重均值大于1.50 g·cm^(-3),呈现南低北高的趋势。陕北高原子产区土壤为碱性,砂粒占比超过80%,质地为砂土;关中平原子产区土壤为中性,其余子产区为弱碱性,质地为壤土。陕西葡萄酒产区土壤养分状况南北差异显著,主要呈现由北向南先增加后减少的趋势。表层土壤有机质、全氮和全磷达到3级及以上的区域分别占45.10%、62.74%、54.90%,深层土壤多数处于养分匮乏状况;钾含量整体较为丰富。土壤综合肥力指数得分依次为:关中平原>陕南山岭>渭北旱塬>陕北高原。土壤全氮和有机质为土壤肥力主要限制因子。
文摘In this paper, we propose a multilayer multiobjective fuzzy comprehensive evaluation (MMFCE) method for assessing simulation schemes of socio-economyic systems of China. In this MMFCE method, multiple methods to determine membership grades of evaluation matrix, the procedure to determine multiobjective weights and multiple combination strategies of fuzzy operations under different evaluation rules are presented. And in this paper, we also describe the application of the MMFCE method in assessing several simulation schemes of socio-economic systems of China. Thus,the MMFCE method can be used by policy-makers in China to evaluate and compare alternative policies for socio-economic development of China.
