
TY  - JOUR
A1  - Williams, K. J. 
A1  - Lewis, J. G. 
A1  - Bogacki, P. 
A1  - Pallotta, M. A. 
A1  - Willsmore, K. L. 
A1  - Kuchel, H. 
A1  - Wallwork, H. 
T1  - Mapping of a QTL contributing to cereal cyst nematode tolerance and resistance in wheat
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 2003
VL  - 54
IS  - 8
SP  - 731
EP  - 737
KW  - Heterodera avenae, Triticum aestivum, nematode resistance, tolerance, genetic mapping, marker-assisted selection.
UR  - https://doi.org/10.1071/AR02225 
N2  - Cereal cyst nematode (CCN; Heterodera avenae Woll.) is a root pathogen of cereals that can cause severe yield losses in intolerant wheat cultivars. Tolerance to CCN, measured as early vigour in CCN-infested plots, was mapped in a Trident/Molineux doubled-haploid (DH) population. A locus accounting for a significant proportion of the tolerance to CCN was mapped to chromosome 6B of Molineux by association with RFLP loci Xcdo347-6B and Xbcd1 and also by nullisomic/tetrasomic substitution line analysis, and has been designated Cre8. The linkage of CCN tolerance with Xcdo347-6B was validated using a Barunga/Suneca DH population. The Cre8 locus also contributed to CCN resistance in the Trident/Molineux population. The RFLP locus Xbcd175, which is diagnostic for the Aegilops ventricosa segment VPM1 of Trident, explained up to 18% of the variation for early vigour in CCN-infested soils in the Trident/Molineux population. However, the Trident/Molineux population also segregated for early vigour in the absence of CCN, with Xbcd175 explaining up to 7% of the variation for this trait. The VPM1 segment of Trident therefore provides early vigour that may contribute to CCN tolerance in this cultivar. 
ER  -

