21个杂交水稻品种主要农艺性状与产量的灰色关联度分析

Grey Correlation Analysis on Main Agronomic Characters of 21 Rice Varieties

运用灰色关联度分析方法,研究分析了21个水稻杂交品种的主要农艺性状与产量、主要农艺性状之间的关系。结果表明,产量与农艺性状的关联度大小依次为:生育期>千粒重>株高>一次分枝数>穗长>有效穗数>着粒密度>穗粒数>抗倒伏系数>穗实粒数>生物产量。因此,在选育水稻品种时,应注意选择生育期较长、粒重及株高较高、一次分枝数较多、穗长较长的品种。

In order to define the relationship studied with the analysis of Grey Correlation between the agronomic characters and yield,21 rice varieties were Degree. Grey correlation degree analysis showed that the importance of the agronomic characters was： Growth stage 〉 grain weight 〉 plant height 〉 first branch number 〉 panicle length 〉 effective panicle number 〉 grain density 〉 grains number per panicle 〉 her of filled grain per panicle 〉 biomass. So we more branch number and more panicle length. lodging should select longer growth stage, grain resistance index 〉 num- weight and higher plant,