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Home List of Titles Analysis of genetic factors determining grain hardness in Australian wheat cultivars
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/72214
- Analysis of genetic factors determining grain hardness in Australian wheat cultivars
- Pickering, Paul A.; Bhave, Mrinal
- Grain texture or hardness is arguably the single most important factor that determines the end-use quality and world trade of wheat. In general, hard wheat is used for breads, while soft wheat is used for cakes and pastries. While mutations in two genes (pinA and pinB) have been associated with grain hardness, currently there is insufficient understanding regarding genetic factors associated with grain texture. Information on Australian wheats is particularly scanty, with only a handful of varieties having been analysed. This study focuses on Australia's leading wheat varieties, and addresses the nature of puroindoline mutations in hard wheats. Of the thirty six hard wheat cultivars we have analysed, eighteen have been found to contain a glycine-to-serine mutation in pinB, and fifteen to contain the total deletion of pinA; both of these mutations being commonly associated with hard grain texture in wheat. Two cultivars have also been identified as a mix of seeds containing both the hard and soft motifs in pinB. Of particular interest is a hard wheat found to lack the well-known associated mutations, requiring analysis of other likely hardness-related genetic factors. These studies will aid in identification and selection of specific hard or soft wheats for breeding or planting purposes.
- Publication type
- Conference paper
- Abstracts of the 51st Annual Conference of the Genetics Society of Australia, Melbourne, Victoria, Australia, 11-14 July 2004
- Publication year
- Genetics; Grain hardness; Grain texture; Wheat
- Genetics Society of AustralAsia
- Publisher URL
- Copyright © 2004.
- Peer reviewed