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GrainGenes Reference Report: PBR-120-503

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Reference	PBR-120-503
Title	Inheritance of seedling and adult plant resistance to leaf rust of selected Australian spring and English winter wheat varieties
Journal	Plant Breeding
Year	2001
Pages	503-507
Author	Singh D Park RF McIntosh RA
Abstract	Summary: 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
Keyword	[ Hide all but 1 of 23 ] adult plant resistance australia common wheat crop growth stage disease resistance england gene inheritance pedigree pedigree analysis plant resistance puccinia recondita resistance rust diseases seedling resistance seedling stage segregation specificities specificity spring triticum aestivum wheat varieties winter

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