Genome inheritance in populations derived from hexaploid/ tetraploid and tetraploid/hexaploid wheat crosses

Padmanaban, Sriram and Sutherland, Mark W. and Knight, Noel L. and Martin, Anke (2017) Genome inheritance in populations derived from hexaploid/ tetraploid and tetraploid/hexaploid wheat crosses. Molecular Breeding, 37 (4). pp. 37-48. ISSN 1380-3743


Hexaploid/tetraploid and tetraploid/hexaploid wheat hybrids were established using the hexaploid (Triticum aestivum L.) bread wheat LRC2010-150 and the tetraploid durum wheat (T. turgidum spp. durum) WID802. Thirty F2 progeny from each cross were characterised using Diversity Arrays Technology (DArTseq™) markers to determine whether there are differences between the crosses in the proportion of A, B and D genomic material inherited from each parent. Inheritance of the A and B genome from the tetraploid durum parent varied from 32 to 63% among the 60 lines assessed, and results indicated significant differences between the two F2 populations in the mean overall proportion of chromosomes A and B inherited from each parent. Significant differences were also observed between the crosses in the proportion of chromosomal segments on 2B, 3A, 3B and 4A inherited from the tetraploid parent. The F2 populations also showed significant differences in the average retention of D chromosomes per line with the tetraploid/hexaploid cross retaining a mean of 2.83 chromosomes while the reciprocal cross retained a mean of 1.8 chromosomes per line. A strong negative correlation was observed in individual lines from both populations between the proportion of the A and B genome inherited from the tetraploid durum parent and the retention of the D genome. The implication of these results for the design of efficient crossing strategies between hexaploid and tetraploid wheats is discussed.

Statistics for USQ ePrint 31407
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online 22 March 2017. Permanent restricted access to ArticleFirst version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health
Date Deposited: 21 Aug 2017 01:21
Last Modified: 18 Apr 2018 00:56
Uncontrolled Keywords: DArTseq™, hexaploid/tetraploid, tetraploid/hexaploids, interploidy crosses, pentaploid hybrids . Retention of D chromosomes
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820507 Wheat
Identification Number or DOI: 10.1007/s11032-017-0647-3

Actions (login required)

View Item Archive Repository Staff Only