Department of Environmental Horticulture, University of California, 95616, Davis, CA, USA.
Theor Appl Genet. 1990 Oct;80(4):559-63. doi: 10.1007/BF00226760.
A Mean Correlation Response (MCR) model was developed to estimate the relative effectiveness of direct selection when other traits also respond to the selection. A measure of the relative effects of mean correlated response and direct response (R) and a measure of the relative efficiency of direct selection (IE) were applied to a genetic correlation matrix of 38 traits. These were measurements of inflorescence, receptacle and involucre, scape, disk florets, ray florets, and trans florets in the Davis population of Gerbera hybrida, Compositae. Generally, traits with high heritability had high direct and mean correlated response; these were often traits measuring disk and trans florets. Traits with low heritability had low direct and mean correlated response; these were often traits measuring the inflorescence. Traits of the inflorescence had the lowest efficiency of direct to mean correlated response.
建立了一种平均相关反应（MCR）模型，以估计在其他性状也对选择做出反应时直接选择的相对有效性。应用于菊科杂种非洲菊戴维斯群体的 38 个性状的遗传相关矩阵的平均相关反应和直接反应（R）的相对效应的度量和直接选择的相对效率（IE）的度量。这些是花序、托叶和总苞、花梗、盘状花、舌状花和trans 花的测量值。一般来说，遗传力高的性状具有较高的直接和平均相关反应；这些性状通常是测量盘状和trans 花的性状。遗传力低的性状具有较低的直接和平均相关反应；这些性状通常是测量花序的性状。花序的性状的直接到平均相关反应的效率最低。
