Skip to main content
eScholarship
Open Access Publications from the University of California

UC Riverside

UC Riverside Previously Published Works bannerUC Riverside

Populations of doubled haploids for genetic mapping in hexaploid winter triticale.

  • Author(s): Tyrka, M
  • Oleszczuk, S
  • Rabiza-Swider, J
  • Wos, H
  • Wedzony, M
  • Zimny, J
  • Ponitka, A
  • Ślusarkiewicz-Jarzina, A
  • Metzger, RJ
  • Baenziger, PS
  • Lukaszewski, AJ
  • et al.
Abstract

To create a framework for genetic dissection of hexaploid triticale, six populations of doubled haploid (DH) lines were developed from pairwise hybrids of high-yielding winter triticale cultivars. The six populations comprise between 97 and 231 genotyped DH lines each, totaling 957 DH lines. A consensus genetic map spans 4593.9 cM is composed of 1576 unique DArT markers. The maps reveal several structural rearrangements in triticale genomes. In preliminary tests of the populations and maps, markers specific to wheat segments of the engineered rye chromosome 1R (RM1B) were identified. Example QTL mapping of days to heading in cv. Krakowiak revealed loci on chromosomes 2BL and 2R responsible for extended vernalization requirement, and candidate genes were identified. The material is available to all parties interested in triticale genetics.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View