Details

Autor(en) / Beteiligte

• Navakode, S
• Weidner, A
• Lohwasser, U
• Röder, M. S
• Börner, A

Titel

Molecular mapping of quantitative trait loci (QTLs) controlling aluminium tolerance in bread wheat

Ist Teil von

• Euphytica, 2009-03, Vol.166 (2), p.283-290

Ort / Verlag

Dordrecht: Dordrecht : Springer Netherlands

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Aluminium (Al) toxicity is a major constraint to crop productivity in acidic soils. A quantitative trait locus (QTL) analysis was performed to identify the genetic basis of Al tolerance in the wheat cultivar 'Chinese Spring'. A nutrient solution culture approach was undertaken with the root tolerance index (RTI) and hematoxylin staining method as parameters to assess the Al tolerance. Using a set of D genome introgression lines, a major Al tolerance QTL was located on chromosome arm 4DL, explaining 31% of the phenotypic variance present in the population. A doubled haploid population was used to map a second major Al tolerance QTL to chromosome arm 3BL. This major QTL (Qalt CS .ipk-3B) in 'Chinese Spring' accounted for 49% of the phenotypic variation. Linkage of this latter QTL to SSR markers opens the possibility to apply marker-assisted selection (MAS) and pyramiding of this new QTL to improve the Al tolerance of wheat cultivars in breeding programmes.