Common QTL and multi-purpose markers for the resistance of five synthetic hexaploids against two species of root lesion nematode
Presentation
Paper/Presentation Title | Common QTL and multi-purpose markers for the resistance of five synthetic hexaploids against two species of root lesion nematode |
---|---|
Presentation Type | Presentation |
Authors | Khoo, Kelvin H. P. (Author), Sheedy, Jason (Author), Thompson, John (Author), Hu, Chih-Fang (Author), Vassos, Elysia (Author), Fox, Rebecca (Author), Chalmers, Ken (Author) and Mather, Diane E. (Author) |
Journal or Proceedings Title | Wheat Breeding Assembly 2013: Program and Abstracts |
Number of Pages | 1 |
Year | 2013 |
Web Address (URL) of Paper | http://www.wheatbreedingassembly.com.au/docs/wba2013_abstracts09-07-2013.pdf |
Conference/Event | Wheat Breeding Assembly 2013 |
Event Details | Wheat Breeding Assembly 2013 Event Date 16 to end of 19 Jul 2013 Event Location Brisbane, Australia |
Abstract | The root lesion nematodes Pratylenchus thornei and P. neglectus are major constraints to cereal production. Among cultivated wheats, there are few good sources of resistance. Among synthetic hexaploid wheats, several lines had been discovered with partial resistance against both nematode species. Using genome-wide marker arrays (SNP and DArTTM) we mapped quantitative trait loci (QTL) for resistance from five partially resistant synthetics of diverse origin (CPI133872, CPI133842, CPI133859, TAMD870167/AUS18913 and Yallaroi/AUS18913). The results were very similar among resistance sources and across nematode species, with QTL detected on chromosome 2B and in two regions of chromosome 6D. To provide tools that wheat breeders can use to select for the synthetic-derived resistance, we added more SNP markers to the QTL regions and assayed those markers on a validation panel of wheat cultivars. This allowed us to identify sets of two or three markers per QTL region. For each set, all five synthetics share a haplotype that is rare or absent among the cultivated wheats in the panel. These markers can be rapidly assayed using KASPTM end-point genotyping and could be adapted to other genotyping technologies for application in wheat breeding. |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Public Notes | Abstract only published. |
Byline Affiliations | University of Adelaide |
Department of Primary Industries and Fisheries, Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3927/common-qtl-and-multi-purpose-markers-for-the-resistance-of-five-synthetic-hexaploids-against-two-species-of-root-lesion-nematode
1669
total views10
total downloads1
views this month0
downloads this month