Fig. 5

Linear regression between genomics predicted value (GPV) and observe phenotype value (OPV) of injury indices of salt (a), alkali (b), and salt–alkali stress (c) in F1 hybrids of Malus robusta ‘Baleng Crab’ × M. pumila ‘M9’ rootstocks. Because there were only four genotype combinations in (c), the data dots should appeared to form four vertical lines, by which it is difficult to see how much the data are segregating, so, box plot was used to show the deviation, the mean value, and the standard variance