Durum Wheat as a Bridge Between Wild Emmer Wheat Genetic Resources and Bread Wheat

Valentina Klymiuk, Andrii Fatiukha, Lin Huang, Zhen zhen Wei, Tamar Kis-Papo, Yehoshua Saranga, Tamar Krugman, Tzion Fahima

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

20 Scopus citations

Abstract

The primary stages of domestication and consequent polyploidization processes of bread wheat (Triticum aestivum, BBAADD) have diminished the genetic diversity within cultivated wheat germplasm. Wild emmer wheat (Triticum dicoccoides, BBAA), the progenitor of wheat, is a promising source for beneficial agronomical traits; however, introgression of such alleles into bread wheat was hampered by various factors, such as necrosis in F1 pentaploid hybrids, failed seedling establishment, and frequent sterility. Therefore, we suggest to utilize durum wheat (Triticum durum, BBAA) as a bridge for transferring favorable alleles into bread wheat. We propose to screen wild emmer germplasm for valuable traits, cross promising accessions with durum varieties, confirm the phenotype in segregating populations, map the target gene(s)/quantitative trait loci (QTLs), and use marker-assisted selection for introgression into bread wheat. Here, we discuss the proposed concept and provide examples of successful transfer of traits such as drought resistance, high grain protein, resistance to stripe rust, powdery mildew, and fusarium head blight.

Original languageAmerican English
Title of host publicationApplications of Genetic and Genomic Research in Cereals
PublisherElsevier
Pages201-230
Number of pages30
ISBN (Electronic)9780081021637
ISBN (Print)9780081022139
DOIs
StatePublished - 1 Jan 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd. All rights reserved.

Keywords

  • Bridging cross
  • Durum wheat
  • Gene pool
  • Grain protein content
  • Pentaploids
  • Recombination
  • Resistance genes
  • Triticum dicoccoides
  • Wheat reference genome
  • Wild emmer

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