Genetic analysis of Aegilops tauschii-derived seedling resistance to leaf rust in synthetic hexaploid wheat.
Disease resistance
Molecular mapping
Monosomic analysis
Puccinia triticina
Triticum aestivum
Journal
Journal of applied genetics
ISSN: 2190-3883
Titre abrégé: J Appl Genet
Pays: England
ID NLM: 9514582
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
05
11
2019
accepted:
08
01
2020
revised:
19
12
2019
pubmed:
26
1
2020
medline:
29
12
2020
entrez:
26
1
2020
Statut:
ppublish
Résumé
Seedling resistance to leaf rust available in the synthetic hexaploid wheat line Syn137 was characterised by means of cytogenetic and linkage mapping. Monosomic analysis located a single dominant gene for leaf rust resistance on chromosome 5D. Molecular mapping not only confirmed this location but also positioned the gene to the distal part of the long arm of chromosome 5D. A test of allelism showed that the gene, tentatively named LrSyn137, is independent but closely linked to Lr1. It appears that Syn137 is occasionally heterogeneous for Lr1 since the analysis of the Lr1-specific marker RGA567-5 in the genetic mapping population indicated the presence of Lr1. Syn137 represents another source of genetic variation that can be useful for the diversification of leaf rust resistance in wheat cultivars.
Identifiants
pubmed: 31981185
doi: 10.1007/s13353-020-00541-z
pii: 10.1007/s13353-020-00541-z
pmc: PMC7148280
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
163-168Références
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