FIGURE 4.
Application of GS for strawberry hybrid breeding. The predicted values were calculated by GBLUP with additive plus dominant effect model. The gray crosses indicate the 5,460 possible F1 hybrids. The black and white circles indicate the F1 hybrids selected for high- and low-pericarp color, respectively. The black and white squares indicate the F1 hybrids selected for high- and low-fruit hardness, respectively. The black triangles indicate the F1 hybrids selected for intermediate phenotypes. (A) Distribution of predicted fruit hardness and pericarp color in 5,460 possible F1 hybrids. (B) Distribution of observed phenotypic values in the selected F1 hybrids. (C) Accuracy of GS models in the selected F1 hybrids. The value in each panel indicates the correlation coefficient (r) between predicted and observed values. The GS models were constructed using both the 105 inbred lines and the 275 test F1 hybrids as the training populations. (D) Accuracy of GS models in the selected F1 hybrids. The value in each panel indicates the correlation coefficient (r) between predicted and observed values. The GS models were constructed using the 105 inbred lines as the training population.