为研究不同基因型马铃薯产量的年度稳定性，选用7个品种（系），采用随机区组设计，4次重复，应用AMMI模型对连续3年的数据进行了分析。结果表明，基因型、环境和基因型与环境互作的平方和分别占总平方和的47.69%、6.41%和40.03%，均达极显著水平。AMMI双标图表明，参试材料产量稳定性为‘牡9141’＞‘牡8182’＞‘克新13号’＞‘牡91320’＞‘牡8153’＞‘克新4号’＞‘克新12号’，平均产量为‘牡8153’＞‘克新13号’＞‘牡91320’＞‘牡8182’＞‘克新4号’＞‘牡9141’＞‘克新12号’。综合品系及其对应类型对照品种的丰产性及稳定性，‘牡91320’、‘牡9141’整体表现优于对照；‘牡8153’的丰产性好，但稳定性不如对照，‘牡8182’的稳定性好，丰产性不如对照。AMMI模型很好地解释了产量性状的基因型效应、环境效应和基因型与环境互作效应。%Seven potato varieties (lines), which were grown four replications in a randomized complete block design for three consecutive years, were analyzed for their yield stability using AMMI model. Sum of square for genetype, environment and genotype × environment accounted for 47.69%, 6.41%and 40.03%of the total sum of square, and al of these variation sources reached highly significance. The biplots indicated that yield stability for genotypes tested was:'Mu9141'>'Mu8182'>'Kexin 13'>'Mu91320'>'Mu8153'>'Kexin 4'>'Kexin 12', and the yield was:'Mu8153'>'Kexin 13'>'Mu91320'>'Mu8182'>'Kexin 4'>'Mu9141'>'Kexin 12'. Considered based on breeding lines purpose and corresponding control variety, 'Mu91320' and 'Mu9141' were superior to their corresponding control in both yield and yield stability;'Mu8153' was higher yielding, but less stable, however, 'Mu8182' was higher stable, but less yielding than the control. AMMI model explained wel the effects of genotype, environment and genotype × environment interaction on yield.
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