【摘要】 以AMMI模型中达显著水平的主成分轴上的环境分量Dj作为衡量区试点对品种判别力的参数指标,Dj值小的试点,其与基因型互作效应弱,包含较少的互作信息。对2003年云南玉米区试早熟组12个区试点进行了分析,剔除Dj值最小的4个试点后,交互作用值仅损失13.29%。更多还原

【Abstract】 The AMMI model was used to analyze the locations for crop cultlvar s trial with parameter Dj which was got from the environmental value of signific ant IPCA, the location with low Dj value has little genotype×environment intera ctions. The discriminating ability of 12 locations for Yunnan early maize hybrid regional trial in 2003 was analyzed, the results showed that four locations wit h the lowest Dj value were deleted from 12 locations, the square sum of genotype ×environment interactions just lost 13.29%.更多还原