The partial rust resistance genes Lr34 and Sr2 have been used extensively in wheat
improvement as they confer exceptional durability. Interestingly, the resistance of Lr34 is
associated with the expression of leaf tip necrosis (Ltn) and Sr2 with pseudo black chaff
(Pbc). Though previous studies have detected several QTL's linked to these traits, their
genetic basis is still intriguing. Hence, association mapping was employed in this study for
CIMMYT's Stem Rust Resistance Screening Nursery wheat lines to identify Genotyping by …

The partial rust resistance genes Lr34 and Sr2 have been used extensively in wheat
(Triticum aestivum L.) improvement, as they confer exceptional durability. Interestingly, the
resistance of Lr34 is associated with the expression of leaf tip necrosis (LTN) and Sr2 with
pseudo‐black chaff (PBC). Genome‐wide association mapping using CIMMYT's stem rust
resistance screening nursery (SRRSN) wheat lines was done to identify genotyping‐by‐
sequencing (GBS) markers linked to LTN and PBC. Phenotyping for these traits was done in …