黄淮海夏大豆(南片)品种(系)农艺性状的综合分析及评价模型构建
- 摘要:
- 为全面、准确综合评价黄淮海夏大豆(南片)品种(系)的农艺性状,构建大豆品种(系)的综合评价体系,本研究利用因子分析、DTOPSIS法、聚类分析和回归分析等多元分析方法,对2019—2021年黄淮海夏大豆(南片)区试中完成两年试验的37份品种(系)的15个性状进行综合分析评价。结果表明:37份大豆品种(系)的15个农艺性状变异系数为2.4%~53.0%,花叶病毒病变异系数最大,其次为有效分枝数,生育期变异系数最小;相关分析表明15个农艺性状间存在复杂的相关性,因子分析将15个性状转化为5个主因子,累计贡献率达77.973%。采用DTOPSIS法计算品种(系)综合评价值(Ci值),对Ci值进行聚类分析,将37份品种(系)划分为3个类群,每个类群具有不同的优势性状。通过逐步回归分析建立大豆品种(系)综合评价模型:Ci=0.484+0.033X3+0.027X4+0.067X7+0.011X11+0.034X14,(R2=0.955 0,F=132.027,P<0.000 1),该模型可用于黄淮海夏大豆品种(系)的综合评价,为育种家选育高产优质大豆品种提供参考。
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备注/Memo
安阳市重点研发与推广专项(2022C01NY008)。