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- Title
Inheritance of seedling and adult plant resistance to leaf rust of selected Australian spring and English winter wheat varieties.
- Authors
SINGH, D.; PARK, R. F.; MCINTOSH, R. A.
- Abstract
Genetic studies were conducted to gain an understanding of the inheritance of adult plant resistance (APR) to leaf rust in six common wheat varieties. The Australian varieties `Cranbrook' and `Harrier' each carry two genes for APR to leaf rust. These genes are genetically independent of the seedling resistance genes Lr23 and Lr17b , carried by the respective varieties. Adult plant resistance in `Suneca' was conferred by at least two genes, in addition to the seedling genes Lr1 and Lr13 . It is likely that the APRs in `Cranbrook', `Harrier' and `Suneca' are conferred by uncharacterized gene(s). Tests of allelism confirmed that seedling resistances in the varieties `Avocet R', `Hereward', `Moulin' and `Pastiche' are conferred by Lr13 . Adult plant resistance in the variety `Hereward' was inherited monogenically, whereas varieties `Moulin' and `Pastiche' each carried two dominant genes. On the basis of rust specificity and pedigree analysis, it would seem likely that the APR genes in `Hereward', `Moulin' and `Pastiche' are also currently uncharacterized.
- Subjects
LEAF rust of wheat; WHEAT rusts; WINTER wheat; DISEASE resistance of plants
- Publication
Plant Breeding, 2001, Vol 120, Issue 6, p503
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1046/j.1439-0523.2001.00663.x