The genetic diversity of UK, US and Australian cultivars of Triticum aestivum measured by DArT markers and considered by genome
Date
2008
Authors
White, J.
Law, J.
MacKay, I.
Chalmers, K.
Smith, J.
Killian, A.
Powell, W.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Theoretical and Applied Genetics: international journal of plant breeding research, 2008; 116(3):439-453
Statement of Responsibility
J. White, J. R. Law, I. MacKay, K. J. Chalmers, J. S. C. Smith, A. Kilian and W. Powell
Conference Name
Abstract
The genetic diversity of UK, US and Australian wheat varieties over the period of modern plant breeding is estimated using diversity array technology markers. Diversity is assessed by both genetic distance between varieties, by AMOVA and as the volumes of multi-dimensional convex hulls estimated from principal co-ordinate analysis. At the whole genome level the three populations are genetically distinct; this is also true of the B genome. However, the US and Australian D genomes are found to occupy the same region of diversity space and the A genomes for these countries are partially overlapping. The use of high-density genotyping with a common marker set allows an unprecedented direct comparison between the diversities of the national populations, between individual genomes and the fluctuation of diversity over time. The highest genetic diversity amongst varieties is reported in the Australian population followed by the US, which in turn is more diverse than the UK. However the average diversity of loci is higher in the US set than in the Australian. Non-random fluctuations in genetic diversity over time are observed.
School/Discipline
Dissertation Note
Provenance
Published online: 4 December 2007
Description
The original publication can be found at www.springerlink.com