Table 5.

Powdery mildew (Pm) comparisons between the presence of mlo alleles and the most significant QPM.PPP-4H marker, physically close to mlo.

Marker (allele)	No. of lines	Median Pm score∗∗	Average rank	Z
SNP4H_1 (A)	45	6.9	145.9	9.75
SNP4H_1 (G)	124	1.0	62.9	-9.75
Non-mlo∗	60	6.3	138.1	10.47
mlo∗	109	1.0	55.8	-10.47

^∗Determined based on presence of any of the mlo-5, mlo-9, or mlo-11 alleles. The comparisons were statistically significant at p-value ≤ 0.05 (Pairwise Kruskal–Wallis comparison, Minitab v. 16). ^∗∗The median values are based on the calculated mean from replicates of a certain line, observation time, location, and year (N = 169). Average Rank = the average of the ranks for all observations within each sample. Z = value of how the average rank for each group compares to the average rank of all observations.