杂交组合灰色接近度评估方法及其在小麦育种中的应用

Evaluation Method for Hybrid Combination Based on Grey Closeness Degree and Its Application in Wheat Breeding

为提高作物杂交组合定量评估效率,提升育种水平,参照时间序列灰色接近度概念,在杂交组合灰色综合评估基础上,提出基于空间序列灰色接近度的杂交组合评估方法。该方法包括杂交组合试验数据整理、育种目标性状值(理想值)确定、试验数据无量纲变换、性状权重确定、杂交组合各性状与育种目标性状灰色接近度计算、杂交组合等级评定等步骤。实例检验结果表明,这种方法较时间序列灰色接近度方法省去了"零化"处理和最大、最小差寻求步骤,使用更加简便易行。

In order to improve utilization rate of hybrid combinations and raise the level of breeding, referencing the closeness incidence degree for time sequences advanced by Professor Liu Sifeng and other scholars and the grey comprehensive evaluation method for hybrid combinations, this paper proposed the evaluation method of hybrid combinations based on the grey closeness degree for space sequences, including collecting the test data of hybrid combinations, making certain of trait value （desirable value） of breeding targets, dimensionless transformation, determining character weight and calculation of grey closeness degree for hybrid combination traits to breeding target characters, evaluating hybrid combinations grades, and so on. Application example shows that this method was easier than the grey comprehensive evaluation method for hybrid combinations, and was of great guiding significance and function for hybrid evaluation.