GBS sequence of wheat population from JagMut1095 x Jagger

Barley yellow dwarf (BYD) is one of the most serious viral diseases in
cereal crops worldwide. Identification of quantitative trait loci (QTLs)
underlining wheat resistance to barley yellow dwarf virus (BYDV) is
essential for breeding BYDV tolerant wheat cultivars. In this study, a
recombinant inbred line (RIL) population was developed from the cross
between Jagger (PI 593688) and a Jagger mutant (JagMut1095). A linkage map
of 3,106 cM consisting of 21 wheat chromosomes was developed using 1,003
unique SNPs from the RIL population and was used to identify QTLs for BYDV
resistance and yield-related traits including thousand kernel weight
(TKW), kernel area (KA), kernel width (KW), and kernel length (KL).
QByd.hwwg-2DL, a QTL on chromosome arm 2DL for BYDV resistance, was
consistently identified in three field experiments, and explained 11.6% to
44.5% of the phenotypic variation. For yield-related traits, six major and
repeatable QTLs were identified on 1AS (QKa.hwwg-1AS), 2DL (QTkw.hwwg-2DL,
QKa.hwwg-2DL, QKw.hwwg-2DL and QKl.hwwg-2DL) and 5AL (QKw.hwwg-5AL). The
major QTLs on chromosome 2DL for TKW, KA, KW and KL were mapped between
621 Mb and 643 Mb, overlapping with QByd.hwwg-2DL with all the favorable
alleles from Jagger. This study reports the first native BYDV resistance
QTL (QByd.hwwg-2DL) originating from common wheat and tightly linked
markers to the QTL for improvement of wheat BYDV resistance in wheat
breeding.