Use of SSR markers to determine the genetic purity of a popular Australian wheat variety and consequences for stripe rust reactions
Article
Article Title | Use of SSR markers to determine the genetic purity of a popular Australian wheat variety and consequences for stripe rust reactions |
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ERA Journal ID | 5326 |
Article Category | Article |
Authors | Simpfendorfer, S. (Author), Martin, A. (Author) and Sutherland, M. W. (Author) |
Journal Title | Seed Science and Technology |
Journal Citation | 41 (1), pp. 98-106 |
Number of Pages | 9 |
Year | 2013 |
Place of Publication | Bassersdorf, Switzerland |
ISSN | 0251-0952 |
1819-5717 | |
Digital Object Identifier (DOI) | https://doi.org/10.15258/sst.2013.41.1.09 |
Web Address (URL) | https://www.ingentaconnect.com/content/ista/sst/2013/00000041/00000001/art00009 |
Abstract | Sunvale is a popular bread wheat variety grown throughout central and northern New South Wales in Australia which has moderate resistance to the fungal leaf disease stripe rust. However, significant levels of stripe rust have been reported in Sunvale crops over the past few seasons. Sunvale is a 17-year-old variety so genetic purity may also be involved in the numerous reports of increased disease susceptibility in grower crops. Twelve SSR markers were used to determine the genetic purity of 23 grower-retained seed lots of cv. Sunvale. Sixteen of the 23 grower-retained Sunvale seed lots (70%) contained at least 5% contamination from a different genotype, while seven samples (30%) contained > 10% contamination. The SSR analysis was complemented by field observations of the various seed lots in a replicated small plot trial. In 17 of the 19 grower-retained Sunvale seed lots that had some level of contamination with another genotype(s), at least one contaminant was very susceptible to stripe rust. The pure Sunvale plants in the plots showed a moderately resistant reaction. This is the first report of seed impurity being definitively determined as the cause of unexpected stripe rust responses within a wheat variety. |
Keywords | bread; Australia; disease resistance; stripe rust; genetic makeup |
ANZSRC Field of Research 2020 | 310506. Gene mapping |
300409. Crop and pasture protection (incl. pests, diseases and weeds) | |
300101. Agricultural biotechnology diagnostics (incl. biosensors) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Industry and Investment, New South Wales |
Centre for Systems Biology | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1yxz/use-of-ssr-markers-to-determine-the-genetic-purity-of-a-popular-australian-wheat-variety-and-consequences-for-stripe-rust-reactions
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