Registration of Two Synthetic Hexaploid Wheat Germplasms Resistant to Hessian Fly

'Langdon' (CItr 13165) durum wheat [Triticum turgidum L. subsp. durum (Desf.) Husn., 2n = 4x = 28, AABB] was used as the female and crossed with two accessions oiAegilops tauschii Cosson (2n = 2x = 14, DD), CIae 25 (accession number of USDA National Small Grains Collection, Aberdeen, ID) and RL 5561 (accession number of Cereal Research Centre, Agriculture and Agri-Food Canada, Winnipeg, MB), for SW8 and SW39, respectively. However, some aneuploid plants with chromosome number other than 42 may occur due to unpaired chromosomes in a small number of pollen and egg mother cells as reported in the Largo SHW line (Joppa and Williams, 1982).