On Breeding dwarf Octoploid Trtitrigia

TA17044, a stable dwarf octoploid Trititrigia, was obtained from the derivatives of T.aestivum Ⅰ E.intermedia Ⅱ T.aestivum.With 65-70cm height,TA17044 is the first new dwarf source of artificially synthetic octoploid Trititrigia.The cytogenetic results indicated that the chromosome number in its root tip cell is 56 with a chromosome configuration of 1.43Ⅰ+27.48Ⅱ+0.09Ⅲ+0.04Ⅳ percell characterized meiosis of its PMCS.And the analysis of isozyme electrophoresis showed that the expression of its dwarfism is likely attributed to genetic interactions between an alien genome and the wheats genetic background.