Current and emerging screening methods to identify post-head-emergence frost adaptation in wheat and barley
Article
Article Title | Current and emerging screening methods to identify post-head-emergence frost adaptation in wheat and barley |
---|---|
ERA Journal ID | 2604 |
Article Category | Article |
Authors | Frederiks, T. M. (Author), Christopher, J. T. (Author), Harvey, G. L. (Author), Sutherland, M. W. (Author) and Borrell, A. K. (Author) |
Journal Title | Journal of Experimental Botany |
Journal Citation | 63 (15), pp. 5405-5416 |
Number of Pages | 12 |
Year | 2012 |
Publisher | Oxford University Press |
Place of Publication | Oxford, United Kingdom |
ISSN | 0022-0957 |
1460-2431 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/jxb/ers215 |
Web Address (URL) | http://jxb.oxfordjournals.org/content/63/15/5405 |
Abstract | Cereal crops can suffer substantial damage if frosts occur at heading. Identification of post-head-emergence frost (PHEF) resistance in cereals poses a number of unique and difficult challenges. Many decades of research have failed to identify genotypes with PHEF resistance that could offer economically significant benefit to growers. Research and breeding gains have been limited by the available screening systems. Using traditional frost screening systems, genotypes that escape frost injury in trials due to spatial temperature differences and/or small differences in phenology can be misidentified as resistant. We believe that by improving techniques to minimize frost escapes, such 'false-positive' results can be confidently identified and eliminated. Artificial freezing chambers or manipulated natural frost treatments offer many potential advantages but are not yet at the stage where they can be reliably used for frost screening in breeding programmes. Here we describe the development of a novel photoperiod gradient method (PGM) that facilitates screening of genotypes of different phenology under natural field frosts at matched developmental stages. By identifying frost escapes and increasing the efficiency of field screening, the PGM ensures that research effort can be focused on finding genotypes with improved PHEF resistance. To maximize the likelihood of identifying PHEF resistance, we propose that the PGM form part of an integrated strategy to (i) source germplasm;(ii) facilitate high throughput screening; and (iii) permit detailed validation. PGM may also be useful in other studies where either a range of developmental stages and/or synchronized development are desired. |
Keywords | barley; in-head frost; reproductive frost; spring radiant frost; wheat |
ANZSRC Field of Research 2020 | 310403. Biological adaptation |
310506. Gene mapping | |
300406. Crop and pasture improvement (incl. selection and breeding) | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Biological and Physical Sciences |
University of Queensland | |
Department of Agriculture, Fisheries and Forestry, Queensland | |
Centre for Systems Biology | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q18vv/current-and-emerging-screening-methods-to-identify-post-head-emergence-frost-adaptation-in-wheat-and-barley
1785
total views11
total downloads1
views this month0
downloads this month