Some Triticum turgidum L. cultivars possessing the chromosome T1BL.1RS substitution uri icon

abstract

  • Six durum wheat (Triticum turgidum L.) cultivars were pollinated by Cando/Veery to produce chromosome 1B, T1BL.1RS F-1 heterozygotes. Each F-1 combination was pollinated by its respective durum maternal parent to yield the first backcross (BC1) derivatives. Heterozygous 1B, T1BL.1RS plants were identified by glucose phosphate isomerase (GPI) electrophoresis and Giemsa C-banding. These BC1F1 heterozygotes were backcrossed further to their durum parents to yield BC2 derivatives, which were similarly advanced to BC7 and then self-pollinated. From the selfed progeny, plants homozygous for chromosome 1B and T1BL.1RS were identified biochemically and cytologically. We discuss here the utility and uniqueness of this germplasm to elucidate the contributions of the 1RS translocated chromosome arm in different durum genotypes.

publication date

  • 1999
  • 1999