Timothy-grass (Phleum pratense L.) is one of the most valuable pasture grasses in Poland, and the productivity of its genotypes (in the case of outcrossing grass species, the term accession instead of genotype was used in this study) varies depending on environmental conditions. In this study, we aimed to examine the accession-by-environment interaction for seven traits in timothy accessions grown in Southern Poland using the additive main effects and multiplicative interaction model. The plant materials used in the study included a total of 11 timothy accessions—six Polish synthetic cultivars (Skald, Egida, Emma, Skala, Skaut and Karta) and five strains (POB-TT1, POB-TT2, POB-TT3, POB-T-100 and POB-T-107). All these accessions were examined in field trials at three locations, Polanowice, Nieznanice and Palikije, in two growing seasons. The field trials were conducted according to a randomized complete block design with three replicates. The AMMI analyses revealed significant effects of accession and environment as well as the accession-by-environment interaction for all the seven analysed traits. The cultivar Skald and the strain POB-TT3 are recommended for inclusion in future breeding programmes as they exhibit high stability and show good average values for the majority of the examined traits.

中文翻译：

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使用加性主效应和乘性相互作用模型检验基因型与环境相互作用对蒂莫西（Phleum pratense L.）干物质产量和化学成分的影响

提摩西草（Phleum pratenseL.) 是波兰最有价值的牧草之一，其基因型的生产力（在异交草种的情况下，本研究中使用术语加入而不是基因型）因环境条件而异。在这项研究中，我们旨在使用加性主效应和乘性交互模型检查波兰南部种植的蒂莫西种质中七个性状的种质与环境的相互作用。研究中使用的植物材料包括总共 11 个蒂莫西种质——六个波兰合成品种（Skald、Egida、Emma、Skala、Skaut 和 Karta）和五个菌株（POB-TT1、POB-TT2、POB-TT3、POB- T-100 和 POB-T-107）。在两个生长季节，在三个地点（Polanowice、Nieznanice 和 Palikije）的田间试验中检查了所有这些种质。田间试验根据随机完整区组设计进行，重复三次。AMMI 分析揭示了所有七个分析性状的加入和环境以及加入与环境相互作用的显着影响。建议将栽培品种 Skald 和 POB-TT3 菌株纳入未来的育种计划，因为它们表现出高稳定性，并且在大多数检查的性状中显示出良好的平均值。