大麦新品系高产稳产性评价方法比较

Comparison of Evaluation Methods for High Yield and Stability of the New Barley Strains

本研究分别运用变异系数法、高稳系数法及AMMI模型对2011—2013年度大理州大麦新品种区域试验中6个试点9个参试品种(系)的高产稳产性进行分析。结果表明:3种分析方法都能为大麦新品种(系)的高产稳产性评价提供参考,但它们各有其局限性。变异系数侧重于揭示产量的稳定性信息,结合平均产量的变异系数法计算简便、直观易懂,但其可靠性较难保证,且难以反映出基因与环境间互作效应;高稳系数法侧重于反映品种(系)的丰产性,虽然实用性较强,但稳定性劣势易被高产掩盖;AMMI模型分析不仅有效地揭示了环境、基因及基因与环境间互作效应对参试品种(系)的影响,对9个参试品种(系)的产量潜力和稳定性类型划分也很充分,而且分析过程严谨评价结果可靠性高,在区域试验大麦新品系高产稳产性评价中应该优先选择运用。综合3种分析方法,品系052DM3-8-8、071DM11-7为高产稳产类型,其中品系052DM3-8-8的产量最高,生产潜力最大;052DM3-3、071DM11-4、凤03-39为高产不稳产类型;对照品种S500及品系凤03-9、071DM16-1、071DM16-4为低产稳产或低产不稳产类型。

The high-yield and stability of the new barley strains in the regional trials were analyzed by coefficient of variation method, high and stable coefficient （HSC） method and AMMI model in Dali during 2011-2013. The results indicated that all these methods could provide reference for selecting new barley strains with high and stable yield, but each method still had some limitations. The method of coefficient of variation combined with average yield was simple, intuitive and easy to understand and focused on revealing yield stability, but difficult to ensure reliability and reflect the interactions between the genes and environment. High stability coefficient method focused on reflecting yield ability and more practical, but its instability was easily covered by high yield. AMMI model analysis not only effectively revealed the influence of three factors （environment, genes and interaction of genes and environment） on barley strains, and the analysis process was rigorous and the result had high reliability, but also was very sufficient for the classification of yield potential and stability, so could be preferentially chosen to evaluate high and stable yield of new barley strains in the regional experiment. Based on the analysis results by three methods, we found that strains 052DM3-8-8 and 071DM11-7 had high and stable yield;052DM3-3, 071DM11-4 and Feng03-39 had high and unstable yield;S500, Feng03-9, 071DM16-1, and 071DM16-4 had low and stable yield or low and unstable yield;and the 052DM3-8-8 had the highest yield among them, with suitable stability parameters and high production potential.