Figure 4.
Epistatic QTL compared from greenhouse- and field-grown A. thaliana. The programs Epistat and Epistacy were used to estimate the probabilities of interactions between map segments for these quantitative traits; the results from the two programs were combined in each scatter plot. The axes indicate the genetic map of A. thaliana with one chromosome following another so that the total is displayed linearly. The x- and y-axes correspond to marker X and marker Y in Table 3. The plotted squares indicate the P-value for an interaction between the map segments: = 0.001,
= 0.003,
= 0.005,
= 0.007. Note that because of the correction for multiple comparisons these values correspond to a 10-fold-higher statistical significance probability.