Cover: Durum wheat haploid plant cv. Durox. Fourteen ring bivalents formed by haploid-derived disomic plants, after fluorescent genomic in situ hybridization. Note seven ring bivalents of the A-genome (brightly fluoresced) shown in green, and seven ring bivalents of the B-genome faded into the background. Plump seed of normal durum wheat is shown at upper left and shriveled seed set on durum haploid plant is shown at upper right. See Jauhar et al., 1742-1749.