春小麦优良变异类型的选择参数—协调指数

Harmonizing index-a selective parameter on the superior individual in a spring wheat population

用分形理论的思想 ,对小麦分离与不分离群体内各单株性状组合特征进行系统分析 ,在不改变性状表达程度与群体分布状态的前提下 ,根据各单株的每一性状占各自群体最大值的比例数 ,及各比例数大小序号 ,求二者间双对数的回归斜率 ,作为该单株性状组合的协调指数。结果表明 ,该指数小 ,表示本单株各性状在表达程度上接近 ,说明性状间关系比较协调 ,否则即不协调。

The traits compositive characteristic of an individual in a segregating or non segregating wheat population was analyzed systemically in order to the model of fractal theory.The Harmonizing Index of traits composition was defined as the slope rate of the regression between the log ratios and log ranks of traits in an individual in the case of the expressive extent of each trait and traits distribution unchanged,which the ratio was a trait value of an individual to the maximun value of the same trait in a population and the rand the order of the trait ratio in traits of the individual.The result showed that the expressive levels were similar among traits in an individual,or the interacting relatons among traits were harmonized,while the index was little,and the index big,the interactin relations not harmonized.The discovery provided a simple and high effective selective indicator for the traits compositive characteristic of an individual in a crop population.$$$$