8个燕麦品种在甘肃的产量稳定性及试点代表性研究

Study on Yield Stability and Test Site Representativeness of Eight Oat Varieties in Gansu Province

为了客观、准确地评价燕麦品种的稳定性和适应性,本研究采用GGE双标图对2012年甘肃省燕麦(Avena sativa)种植区域5个试点中的8个燕麦品种试验数据进行分析。结果表明:在燕麦种植区的大环境下,品种与环境互作效应对产量变异的影响约为品种效应的4.02倍。‘陇燕2号’和‘陇燕3号’属于高产、稳产性好的品种;‘青引1号’具有特殊适应性,在局部地区有推广价值。5个燕麦区试点可划分为2个不同的类型区,其中在甘肃中部半干旱地区表现最好的品种是‘陇燕1号’,在甘肃高寒阴湿区表现最好的品种是‘陇燕3号’。从环境代表性和对品种鉴别能力两方面分析,5个试点中代表性最好的是通渭,鉴别力最好的是天祝。

In this study, GGE-biplot method was used to analyze the regional trial data of eight oat varieties from five sites in 2012, aiming to evaluate the yield stability and adaption of oat varieties objectively and accurately in Gansu province. The results showed that in oat planting region, the effect of interaction be- tween variety and environment on yield variation were about 4.02 times as high as that of variety effects. ＇Longyan No. 2＇ and ＇ Longyan No. 3＇ had higher yield and better yield stability than other varieties, while ＇Qingyin No. 1~ was deserved to promote in local areas for its idioadaptation. These five test sites were broadly classified into two environments. ＇Longyan No. 1 ~was the best genotypes for semi-arid regions of central Gansu province, and ＇ Longyan No. 3＇ was the best genotypes for chilling and humid region of high- elevation of Gansu province. As for environment representativeness and identification varieties capacity, Tongwei was the best representative in the five test sites, and Tianzhu had the best discrimination capacity.