Figure 1From: Genetic variation, heritability and genotype by environment interaction of morphological traits in a tetraploid rose populationThe traits PS (prickles on stems, panels A and B) and PP (prickles on petioles, panels C & D) are shown here with examples of their range in the K5 progeny. Panel A shows an individual without prickles on the stem and panel B with prickles on the stem. Panel C shows an individual without prickles on the petiole and panel D with.Back to article page