AMMI模型在重庆市玉米区域试验中的应用

为了解重庆市玉米区域试验参试品种的丰产性、稳定性以及各试点鉴别力,筛选适合重庆市种植的高产稳产玉米品种,该研究利用AMMI(主效可加互作可乘模型)模型对25个品种在7个试点的产量数据进行了分析.结果表明:品种、试点、品种×试点互作及交互作用主成分值(IPCA)均达到极显著水平.高产稳产型品种有渝2112,XD122和LC29304,高产但稳定性一般品种有BSF11-18,8149和金玉10号,高产但稳定性较差品种有CN898和华凯2号.试点鉴别力从大到小依次为黔江区种子站、重庆市农科院玉米所、万州区种子站、巫山县种子管理站、西南大学玉米研究所、永川区粮油技术推广站和丰都县种子站.

On Application of AMMI Model in Regional Trial of Maize in Chongqing

In order to investigate the high-yield ability,to yield stability and to site discrimination of the regional trial of maize varieties in Chongqing,and to screen for high-yield stable varieties for Chongqing maize production,AMMI model has been adopted to analyze the yield data of 25 maize varieties in 7 test sites.The results show that varieties,test sites,interaction between variety and test site and interaction of principal component values (IPCA) reached extremely significant level.The high-yield and stable varieties contain Yu2112,XD122 and LC29304,the high-yield and secondary stable varieties contain BSF11-18,8149 and Jinyu10,the high-yield and worst stable varieties contain CN898 and Huakai2.The rank of site discrimination are Qianjiang Seed Station,Corn Research Institution of Chongqing Academy,Wanzhou Seed Station,Wushan Seed Management Station,Corn Research Institution of Southwest University,Cereals & Oils Extension Center of Yongchuan and Fengdu Seed Station,respectively.