Ortiz Rios, Rodomiro Octavio
- Department of Plant Breeding, Swedish University of Agricultural Sciences
Abstract
Climate change is increasingly damaging the durum wheat crop across most regions of the world. Generating durum wheat genotypes primed with the genetic capacity to withstand drought and heat stress is essential to ensure future harvests. However, the interaction between genotypes and the changing environments generates data that are often complex to interpret. Here, we revise the main literature to define the specific detrimental effects on different traits caused by drought and heat stress occurring at different stages during the season. The best physiological tools and biometric approaches for identifying and selecting these major traits are then presented, in the optic of integrating them into a durum wheat breeding program that specifically targets the genetic improvement in abiotic stress tolerance. Accordingly, some of the main sources of germplasm to help generate useful diversity are also reported. Here are also reported the major loci identified from the literature as linked to adaptation to abiotic stresses, including those that have already been transformed with success via cis- or trans-genesis or editing approaches. In addition, the use of genomic models to integrate also minor alleles for tolerance is described, providing the scheme used by the International Center for Agricultural Research in the Dry Areas (ICARDA) program as an example of integration of the various technologies described here. Overall, this chapter provides an ideal starting point to design or revise breeding approaches targeting the adaptation to the changing climates, exploiting the latest genomic and phenotypic approaches to maximize the rates of genetic gain and ensure that durum wheat remains a crop of choice for future farmers.
Published in
Compendium Plant Genomes
2025, pages: 145–186
Title: The Durum Wheat Genome : Sequencing, Mining and Leveraging the Tetraploid Wheat Genome
Publisher: Springer Cham
SLU Authors
UKÄ Subject classification
Genetics and Breeding in Agricultural Sciences
Agricultural Science
Publication identifier
- DOI: https://doi.org/10.1007/978-3-031-84689-2_10
- ISBN: 978-3-031-84688-5
- eISBN: 978-3-031-84689-2
Permanent link to this page (URI)
https://res.slu.se/id/publ/144825