Retention of D genome chromosomes in pentaploid wheat crosses

Martin, A. and Simpfendorfer, S. and Hare, R. A. and Eberhard, F. S. and Sutherland, M. W. (2011) Retention of D genome chromosomes in pentaploid wheat crosses. Heredity, 107 (4). pp. 315-319. ISSN 0018-067X

Abstract

The transfer of genes between Triticum aestivum (hexaploid bread wheat) and T. turgidum (tetraploid durum wheat) holds considerable potential for genetic improvement of both these closely related species. Five different T. aestivum/T. turgidum ssp. durum crosses were investigated using Diversity Arrays Technology (DArT) markers to determine the inheritance of parental A, B and D genome material in subsequent generations derived from these crosses. The proportions of A, B and D chromosomal segments inherited from the hexaploid parent were found to vary significantly among individual crosses. F 2 populations retained widely varying quantities of D genome material, ranging from 99% to none. The relative inheritance of bread wheat and durum alleles in the A and B genomes of derived lines also varied among the crosses. Within any one cross, progeny without D chromosomes in general had significantly more A and B genome durum alleles than lines retaining D chromosomes. The ability to select for and manipulate this non-random segregation in bread wheat/durum crosses will assist in efficient backcrossing of selected characters into the recurrent durum or hexaploid genotype of choice. This study illustrates the utility of DArT markers in the study of inter-specific crosses to commercial crop species.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version due to publisher copyright restrictions.
Depositing User: Prof Mark Sutherland
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 29 Mar 2012 06:21
Last Modified: 16 Oct 2013 02:26
Uncontrolled Keywords: DArTs; pentaploid crosses; Triticum aestivum; Triticum turgidum; cross breeding; genetics; inbreeding; plant chromosome; plant genome; wheat
Fields of Research (FOR2008): 06 Biological Sciences > 0604 Genetics > 060408 Genomics
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070305 Crop and Pasture Improvement (Selection and Breeding)
06 Biological Sciences > 0607 Plant Biology > 060703 Plant Developmental and Reproductive Biology
Socio-Economic Objective (SEO2008): B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820507 Wheat
Identification Number or DOI: doi: 10.1038/hdy.2011.17
URI: http://eprints.usq.edu.au/id/eprint/21036

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