Fig. 5

Boxplot distributions of pre-harvest sprouting (PHS) score in population divided into photoperiod-insensitive vs -sensitive groups. All DH lines produced from the cross AAC Innova/AAC Tenacious were grouped into two genotypic classes, photoperiod-insensitive (Ppd-D1a) and -sensitive (Ppd-D1b), based on the domestication allele of the photoperiod gene Ppd-D1. Ppd-D1 is an important candidate gene for QPhs.lrdc-2D.1 QTL on chromosome 2D. Effects of domestication alleles of Ppd-D1 on average PHS score are presented using the pooled phenotypic data (average of all environments). Photoperiod-sensitive allele Ppd-D1b significantly reduced PHS in AAC Innova/AAC Tenacious DH population. Statistically significant difference between alleles is calculated by ANOVA, pairwise T test with Bonferroni corrections and shown by asterisk. Quartiles and medians are represented by boxes and continuous lines, respectively. Whiskers extend to the farthest points that are not outliers