| 摘要: |
| 【目的】鉴定甘肃春小麦区试品系的适应性、稳产性及试点代表性，为优良新品种的推广和品种的区域选择提供理论依据。【方法】利用2007-2014年甘肃省春小麦区域试验40个品系在7个试点的试验数据，采用GGE双标图法分析参试品种（系）的适应性、稳产性及试点的代表性,并分析环境因子及相关农艺性状与产量构成因子的相关性。【结果】环境及品系与环境交互作用对产量的影响均大于品系，分别是品系效应的3.71倍和3.12倍；品系7095属于适应性和稳产性均表现较好的品系；在7个试点中，黄羊点的代表性和鉴别力最好。产量及9个相关农艺性状与5个环境因子间有显著或极显著的相关性。【结论】环境间的差异是造成甘肃春小麦区试试验参试品种（系）产量差异最主要的因子。筛选出了在甘肃局部地区有推广价值的春小麦品种（系）以及具有代表性和良好鉴别力的区试点。 |
| 关键词: GGE双标图 春小麦 品系适应性 品种稳产性 试点代表性 |
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| 基金项目:国家自然科学基金项目(31560390);甘肃省科技重大专项（17ZD2NA016-7）;公益性行业农业科研专项（201503125-1） |
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| Yield stability and testing site representativeness of regional trials for spring wheat lines in Gansu based on GGE biplot |
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LIU Na,CAO Dong,WANG Shihong,et al
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| Abstract: |
| 【Objective】The study evaluated the adaptability and stability of cultivars and representative ability of testing site in Gansu to provide theoretical basis for the popularization of new varieties and the selection of test regions.【Method】Based on the experimental data of 40 strains in 7 sites of spring wheat area in Gansu Province from 2007 to 2014,it uses GGE biplot method to analyze the adaptability,production stability and the representativeness of the pilots and to analyze the correlation among environmental factors,related agronomic characters and yield components.【Result】The effects of environment and genotype-environment interaction on grain yield were 3.71 and 3.12 times of that of genotype.The variety 7095 had higher yield and better yield stability than other lines.Huangyang was the best representative testing site and discrimination than other sites.Yield and 9 agronomic traits had significant or extremely significant correlations with 5 environmental factors.【Conclusion】Environmental factors were the main factor causing yield difference among different cultivars in Gansu.Based on GGE biplot,this study identified the productivity and stability of wheat cultivars and the best representative testing site in Gansu. |
| Key words: GGE biplot spring wheat line adaptability line yield stability testing site representativeness |
