Introgression of a 4D chromosomal fragment into durum wheat confers aluminium tolerance.

ABSTRACT:

Background and aim

Aluminium (Al(3+)) inhibits root growth of sensitive plant species and is a key factor that limits durum wheat (Triticum turgidum) production on acid soils. The aim of this study was to enhance the Al(3+) tolerance of an elite durum cultivar by introgression of a chromosomal fragment from hexaploid wheat (Triticum aestivum) that possesses an Al(3+) tolerance gene.

Methods

A 4D(4B) substitution line of durum wheat 'Langdon' was backcrossed to 'Jandaroi', a current semi-dwarf Australian durum. In the second backcross, using 'Jandaroi' as the recurrent parent, a seedling was identified where TaALMT1 on chromosome 4D was recombined with the Rht-B1b locus on chromosome 4B to yield an Al(3+)-tolerant seedling with a semi-dwarf habit. This seedling was used in a

SUBMITTER: Han C 

PROVIDER: S-EPMC4071094 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature