Environmental challenges, including rising temperatures, extreme weather events, soil degradation, and the spread of pests and diseases, pose increasing threats to global food security. These pressures underscore the need to breed crops with enhanced resilience to such biotic and abiotic stresses. While traditional breeding methods are effective, they are often too slow to quickly develop varieties that can thrive under these stresses. Doubled haploid (DH) technology offers a valuable approach by enabling the rapid creation of fully homozygous lines, facilitating the swift incorporation of traits such as stress tolerance and disease resistance within a single generation. This chapter discusses the advantages of DH technology in boosting genetic gain, improving precision in quantitative trait locus (QTL) mapping, and advancing marker-assisted breeding. Despite its potential, DH technology remains underutilized in resilience breeding, primarily due to challenges in producing large haploid populations for comprehensive genetic screening. Advances in haploid generation techniques, alongside recent innovations in plant breeding, now allow for large-scale production of genetically uniform plants. Incorporating DH technology into breeding programs can thus expedite the development of environmentally resilient crops, meeting the urgent need for sustainable agriculture in the face of mounting environmental challenges.

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Doubled Haploids: Accelerating the Breeding of Resilient Crops for the Future

  • Riniya Najeeb,
  • Abhinav Uniyal,
  • Ramesh Bondada,
  • Ravi Maruthachalam

摘要

Environmental challenges, including rising temperatures, extreme weather events, soil degradation, and the spread of pests and diseases, pose increasing threats to global food security. These pressures underscore the need to breed crops with enhanced resilience to such biotic and abiotic stresses. While traditional breeding methods are effective, they are often too slow to quickly develop varieties that can thrive under these stresses. Doubled haploid (DH) technology offers a valuable approach by enabling the rapid creation of fully homozygous lines, facilitating the swift incorporation of traits such as stress tolerance and disease resistance within a single generation. This chapter discusses the advantages of DH technology in boosting genetic gain, improving precision in quantitative trait locus (QTL) mapping, and advancing marker-assisted breeding. Despite its potential, DH technology remains underutilized in resilience breeding, primarily due to challenges in producing large haploid populations for comprehensive genetic screening. Advances in haploid generation techniques, alongside recent innovations in plant breeding, now allow for large-scale production of genetically uniform plants. Incorporating DH technology into breeding programs can thus expedite the development of environmentally resilient crops, meeting the urgent need for sustainable agriculture in the face of mounting environmental challenges.