Reducing the size of an alien segment carrying leaf rust and stripe rust resistance in wheat.

ABSTRACT:

Background

Leaf and stripe rusts are two major wheat diseases, causing significant yield losses. The preferred way for protecting wheat from rust pathogens is by introgression of rust resistance traits from wheat-related wild species. To avoid genetic drag due to replacement of large wheat chromosomal segments by the alien chromatin, it is necessary to shorten the alien chromosome segment in primary recombinants.

Results

Here we report on shortening of an alien chromosome segment in wheat that carries leaf and stripe rust resistance from Sharon goatgrass (Aegilops sharonensis). Rust resistant wheat introgression lines were selected and the alien region was mapped using genotyping by sequencing. Single polymorphic nucleotides (SNP) were identified and used to generate diagnos

SUBMITTER: Khazan S 

PROVIDER: S-EPMC7147030 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature