决策系数的检验及在育种分析中的应用  

Statistical test of decision coefficient and its application in breeding

作　　者：解小莉[1] 袁志发[1] 

机构地区：[1]西北农林科技大学理学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2013年第3期111-114,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：08回国人员科研启动基金项目(01140503)

摘　　要：【目的】提出了检验决策系数的统计方法,为研究者分析不同自变量对因变量的综合作用提供了量化指标。【方法】采用推导随机变量函数均值和方差的通用方法——Δ技术,求解决策系数的均值和方差,提出决策系数的统计检验方法。【结果】建立了决策系数检验的t统计量,给出了检验的具体步骤。根据小麦产量与千粒质量、株穗数、穗粒数和穗粒质量4个影响因素的例子,得出了提高小麦产量必须显著地提高株穗数和限制穗粒数的结论。【结论】提出的决策系数统计检验方法,可以为分析不同自变量对因变量的综合作用提供量化指标。【Objective】 The study aimed to propose a statistical test method for examination of decision coefficient,which provided quantitative indexes for analyzing the comprehensive impact of independent variables on dependent variables.【Method】 Δ method was used to compute the mean value and variance of the function of decision coefficient.【Result】 The t statistic and test steps of the decision coefficient were established.Wheat yields were taken as an example to illustrate the statistical test of the decision coefficient.Results demonstrated that the panicle number per hill should be increased while the grain number per ear should be limited in order to increase the production of wheat.【Conclusion】 The statistical test method for the decision coefficient was suggested and had the potential to be used to quantitate the impact of independent variables on dependent variables.

关 键 词：决策系数 Δ技术 统计检验 

分 类 号：O212[理学—概率论与数理统计]