基于GGE双标图的晋西北黄土高原谷子生产稳定性与适应性分析

Stability and adaptability analysis of millet production on the Loess Plateau in northwest Shanxi Province based on GGE biplot

【目的】评价山西省晋西北黄土高原春播谷子品种的产量稳定性与适应性,以及各试点的代表性与区分力,为晋西北谷子品种的合理布局以及谷子品种鉴定试点的选择提供依据。【方法】采用GGE双标图法对2021、2022年在山西省晋西北黄土高原8个试点参试的12个谷子品种(系)产量稳定性、适应性以及环境的区分力和代表性进行分析。【结果】品种(系)、环境以及品种(系)与环境交互作用对谷子产量的影响均表现出极显著水平。8个试点划分为两个生态区,原平、偏关、临县和保德为同一生态区,五寨、静乐和岚县为另一个生态区,兴县两年间的结果不稳定无法区划。12个参试谷子品种(系)中,长农35号和长农47号表现为丰产且稳产,适宜在晋西北黄土高原8个试点种植;长生13号丰产性好但不稳定,适宜在五寨、静乐和岚县种植;晋谷21号稳产性好但产量低;而承15-m328的产量和稳定性均不佳,不适宜在晋西北黄土高原种植。【结论】适宜在山西省晋西北黄土高原种植的丰产稳产谷子品种为长农35号和长农47号。临县、静乐和偏关3个试点具有高区分力和代表性,是较理想的谷子品种鉴定试点;原平、五寨和保德3个试点的区分力强但代表性不足,适合用于筛选稳产性差的谷子品种。

【Objective】To evaluate the yield stability and adaptability of spring-sown millet varieties in the Loess Plateau of northwest Shanxi,as well as the representativeness and discrimination of each experiment site,provide a theoretical basis for the rational layout of millet varieties in the northwest Shanxi and the selection of experimental site for millet variety identification.【Methods】The GGE biplot was used to analyze the yield stability,adaptability,and environmental discrimination and representativeness of 12 millet varieties(lines)tested in 8 experimental sites on the Loess Plateau in northwest Shanxi Province in 2021 and 2022.【Results】The impact of variety(line),environment,and the interaction between variety(line)and environment on the yield of millet showed a extremely significance.The 8 experimental sites are divided into two ecological zones,with Yuanping,Pianguan,Linxian,and Baode as the same ecological zone,Wuzhai,Jingle,and Lanxian as another ecological zone,and Xingxian′s results over the past two years had been unstable and unable to be divided.Among the 12 tested millet varieties(lines),Changnong No.35 and Changnong No.47 showed high and stable yields,suitable for planting in 8 experimental sites on the Loess Plateau in northwest Shanxi;Changsheng No.13 had good yield but is unstable,suitable for planting in Wuzhai,Jingle,and Lanxian;Jingu No.21 had good stability but low yield;However,the yield and stability of Cheng 15-m328 were poor,making it unsuitable for planting on the Loess Plateau in northwest Shanxi.【Conclusion】The high-yield and stable millet varieties suitable for planting on the Loess Plateau in northwest Shanxi Province are Changnong No.35 and Changnong No.47.The 3 experimental sites of Linxian,Jingle,and Pianguan have high discrimination and representativeness,and are ideal experimental sites for identifying millet varieties;The 3 experimental sites of Yuanping,Wuzhai,and Baode have strong discrimination but insufficient representativeness,making them suitable for screening millet varieties with poor stability.