Abstract
Previous studies showed that a T. aestivum-H. villosa disomic substitution line DS4V(4D) showed a high level of resistance to wheat spindle streak mosaic virus (WSSMV). By crossing DS4V(4D) with the common wheat variety Yangmai #5, plants were obtained that were double monosomic for chromosomes 4V and 4D. Univalents are prone to misdivision at the centromere, and fusion of the derived telocentric chromosomes leads to the production of Robertsonian whole-arm translocations. We screened the progenies of such double monosomic plants by C-banding and genomic in situ hybridization and identified one compensating translocation where the short arm of 4V was translocated to the long arm of 4D of wheat, T4VS⋅4DL. RFLP analysis using the group-4 specific probe BCD110 was used to confirm the translocation. The T4VS⋅4DL translocation stock, accessioned as NAU413, is highly resistant to WSSMV and is also of good agronomic type. The WSSMV resistance gene located on 4VS was designated Wss1.
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Zhang, Q., Li, Q., Wang, X. et al. Development and characterization of a Triticum aestivum-Haynaldia villosa translocation line T4VS⋅4DL conferring resistance to wheat spindle streak mosaic virus. Euphytica 145, 317–320 (2005). https://doi.org/10.1007/s10681-005-1743-8
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DOI: https://doi.org/10.1007/s10681-005-1743-8