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Fig. 1. Frequency distribution bar-charts for traits associated with (A) vegetative morphogenesis, (B) reproductive morphogenesis and development and (C) winter hardiness measured in the progeny set of the p150/112 reference genetic mapping population in perennial ryegrass. Phenotypic scores have been assigned to intervals on the y = 0 axis up to the maximum value indicated for each interval. The mean score of the heterozygous p150/112 parent is indicated in the relevant interval by an arrow, with the appropriate numerical value. The doubled haploid parent was not available for phenotypic analysis.
