RRC ID 70805
著者 Balla MY, Gorafi YSA, Kamal NM, Abdalla MGA, Tahir ISA, Tsujimoto H.
タイトル Harnessing the diversity of wild emmer wheat for genetic improvement of durum wheat.
ジャーナル Theor Appl Genet
Abstract KEY MESSAGE:The multiple derivative lines (MDLs) characterized in this study offer a promising strategy for harnessing the diversity of wild emmer wheat for durum and bread wheat improvement. Crop domestication has diminished genetic diversity and reduced phenotypic plasticity and adaptation. Exploring the adaptive capacity of wild progenitors offer promising opportunities to improve crops. We developed a population of 178 BC1F6 durum wheat (Triticum turgidum ssp. durum) lines by crossing and backcrossing nine wild emmer wheat (T. turgidum ssp. dicoccoides) accessions with the common durum wheat cultivar 'Miki 3'. Here, we describe the development of this population, which we named as multiple derivative lines (MDLs), and demonstrated its suitability for durum wheat breeding. We genotyped the MDL population, the parents, and 43 Sudanese durum wheat cultivars on a Diversity Array Technology sequencing platform. We evaluated days to heading and plant height in Dongola (Sudan) and in Tottori (Japan). The physical map length of the MDL population was 9 939 Mb with an average of 1.4 SNP/Mb. The MDL population had greater diversity than the Sudanese cultivars. We found high gene exchange between the nine wild emmer accessions and the MDL population, indicating that the MDL captured most of the diversity in the wild emmer accessions. Genome-wide association analysis identified three loci for days to heading on chromosomes 1A and 5A in Dongola and one on chromosome 3B in Tottori. For plant height, common genomic loci were found on chromosomes 4A and 4B in both locations, and one genomic locus on chromosome 7B was found only in Dongola. The results revealed that the MDLs are an effective strategy towards harnessing wild emmer wheat diversity for wheat genetic improvement.
巻・号 135(5)
ページ 1671-1684
公開日 2022-5-1
DOI 10.1007/s00122-022-04062-7
PII 10.1007/s00122-022-04062-7
PMID 35257197
PMC PMC9110450
MeSH Genome-Wide Association Study Plant Breeding Polymorphism, Single Nucleotide Quantitative Trait Loci* Triticum* / genetics
IF 4.439
リソース情報
コムギ KU-108–1 KU-108–4 KU-108–5 KU-8808 KU-8810 KU-8814 KU-8815 KU-14474 KU-14532