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作物学报 ›› 2013, Vol. 39 ›› Issue (03): 449-454.doi: 10.3724/SP.J.1006.2013.00449

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

玉米区域试验中误差方差的异质性及其对品种评价的影响

王春平1,*,胡希远2,*,沈琨仑2   

  1. 1河南科技大学农学院,河南洛阳471003; 2西北农林科技大学农学院,陕西杨凌712100
  • 收稿日期:2012-05-18 修回日期:2012-10-05 出版日期:2013-03-12 网络出版日期:2012-12-11
  • 通讯作者: 胡希远, E-mail: xiyuanhu@yahoo.com.cn; 王春平, E-mail: chunpingw@163.com
  • 基金资助:

    本研究由陕西省自然科学基金项目(2012JM3009)和河南科技大学人才基金项目(09001595)资助。

Heterogeneity of Error Variance and Its Effect on the Variety Evaluation in Corn Regional Trials

WANG Chun-Ping1,*,HU Xi-Yuan 2,*,SHEN Kun-Lun2   

  1.  1 College of Agronomy, Henan University of Science and Technology, Luoyang 471003, China; 2 College of Agronomy, Northwest A&F University, Yangling 712100, China;
  • Received:2012-05-18 Revised:2012-10-05 Published:2013-03-12 Published online:2012-12-11
  • Contact: 胡希远, E-mail: xiyuanhu@yahoo.com.cn; 王春平, E-mail: chunpingw@163.com

摘要:

为了研究我国玉米区域试验中误差方差的异质性存在状况及其对品种评价的作用, 2003—2006年东北和华北16组玉米区域试验资料为依据,对玉米区域试验各环境试验误差方差差异状况及误差方差同质模型和异质模型的拟合效果进行了验证,并对品种效应差异显著性测验在误差同质模型和误差异质模型分析结果的差异状况进行了比较。结果表明,在分析的所有试验中,试验误差方差在环境间具有较大差异;误差方差异质模型比误差方差同质模型对试验数据拟合效果普遍较好;模型是否考虑误差方差的异质性对品种-环境交互效应测验结果有较大影响,而对品种主效应测验结果影响极小;误差方差异质模型比误差方差同质模型测验效率高

关键词: 玉米, 区域试验, 误差变异, 模型

Abstract:

In order to study the heterogeneity state of error variance and its effect on the variety evaluation in corn regional trials, based on the 16 data sets of the corn regional trials in the Northeast and North China from 2003 to 2006, we assessed the error variation between the environments and the fit-goodness of models for homogeneous and heterogeneous errors, and compared the statistical tests for trial effects from the two models. The results showed that the error variance largely varied between environments in all of the considered trials. The model for heterogeneous errors fitted the trial data better than the model for homogeneous errors. Whether the heterogeneity of error variance was considered in the models considerably impacted the test about variety-environment interaction effects and little did the test about variety effects. The model for heterogeneous errors had higher test efficiency than the model for homogeneous errors.

Key words: Corn, Regional trial, Error variation, Model

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