Figure 1.

Frequency distribution of Sclerotinia basal stalk rot disease incidence (A–D), area under disease progress curve (E) and BSR disease rating (F) in the HA 89/Helianthus praecox AB-QTL population evaluated in the field in Carrington, ND during 2017–2018 (A–D) and in the greenhouse in 2018 (E,F). The green arrowheads indicate the value of the recurrent parent HA 89. The Shapiro–Wilk normality test statistic (w), the probability value (p), and the mean (μ) of the data for each environment are shown inside the respective plots.