An investigation of genotype-phenotype association in a festulolium forage grass population containing genome-spanning <i>Festuca pratensis</i> chromosome segments in a <i>Lolium perenne</i> background - Fig 4

A. Relative variation in tiller number within S4fam measured in quadruplicate in partial flooding and control conditions, represented according to the position of the introgressed F. pratensis chromosome segment. Each column in each graph is the mean of the trait score for the genotypes within S4fam which contain a F. pratensis introgression at that particular position (illustrated below the x axis). For each illustration of the pattern of F. pratensis introgressions, each row represents a single genotype and each column a defined and sequential region of the chromosome from end to end. A red square indicates a F. pratensis introgression at that relative position in that particular genotype; a green square indicates the L. perenne background. Error bars are standard errors (nB. Variation in tiller number in flooding trials for genotypes within S4fam with F. pratensis introgressions at different ends of C4 (Groups 1 and 2). * and ** = significant at p = 0.05 and 0.01, respectively.