Inheritance and chromosome location of leaf rust resistance in durum wheat cultivar Wollaroi

The Australian durum cultivar Wollaroi produced low leaf rust responses in the field since its release in 1993. A recombinant inbred line population was developed from a cross of Wollaroi with a susceptible landrace Bansi. Monogenic inheritance of low seedling leaf rust response against the Puccinia...

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Bibliographic Details
Published in:Euphytica 2010-10, Vol.175 (3), p.351-355
Main Authors: Singh, B, Bansal, U. K, Forrest, K. L, Hayden, M. J, Hare, R. A, Bariana, H. S
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
alleles
Analysis
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
chromosome mapping
Chromosomes
Cultivars
disease resistance
durum wheat
Fundamental and applied biological sciences. Psychology
Genetic markers
genetic resistance
Genetics and breeding of economic plants
Heredity
inbred lines
inheritance (genetics)
landraces
Life Sciences
Pest resistance
Plant Genetics and Genomics
plant pathogenic fungi
Plant pathogens
Plant Pathology
Plant Physiology
Plant resistance
Plant Sciences
Puccinia recondita
rust diseases
seedlings
Selective breeding
Triticum turgidum subsp. durum
Varietal selection. Specialized plant breeding, plant breeding aims
Wheat
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Summary:The Australian durum cultivar Wollaroi produced low leaf rust responses in the field since its release in 1993. A recombinant inbred line population was developed from a cross of Wollaroi with a susceptible landrace Bansi. Monogenic inheritance of low seedling leaf rust response against the Puccinia triticina pathotype 104-1,2,3,6,(7),(11),13 was observed. This gene was temporarily designated as LrWo. A DArT based map of Wollaroi/Bansi was used to determine the genomic location of LrWo and it was mapped in chromosome 5BS. Following enrichment of the DArT map of chromosome 5BS with SSR markers, LrWo was flanked by gwm234 (7.2 cM) and wPt-1420 (20.3 cM) distally and proximally, respectively. A previously characterised gene Lr52 was also located on the chromosome arm 5BS, proximal to gwm234. Based on genetic association with the marker gwm234 at a similar distance, we concluded that LrWo could be either Lr52 or is another allele of this locus. Based on infection type comparison the latter argument seems more plausible.
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-010-0179-y