Leaf rust and stripe rust resistance genes Lr54 and Yr37 transferred to wheat from Aegilops kotschyi

The tendency of unpaired meiotic chromosomes to undergo centric misdivision was exploited to translocate leaf rust and stripe rust resistance genes from an Aegilops kotschyi addition chromosome to a group 2 chromosome of wheat. Monosomic and telosomic analyses showed that the translocation occurred...

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Vydané v:	Plant breeding Ročník 124; číslo 6; s. 538 - 541
Hlavní autori:	Marais, G. F., McCallum, B., Snyman, J. E., Pretorius, Z. A., Marais, A. S.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Berlin, Germany Blackwell Verlag GmbH 01.12.2005 Blackwell
Predmet:	Aegilops Aegilops kotschyi Agronomy. Soil science and plant productions Biological and medical sciences chromosome addition chromosome translocation disease resistance Fundamental and applied biological sciences. Psychology genes Genetics and breeding of economic plants intergeneric hybridization Interspecific and intergeneric hybridization, introgressions introgression leaves Pest resistance plant breeding Plant breeding: fundamental aspects and methodology Plant pathogens Puccinia recondita Puccinia striiformis Puccinia striiformis f. sp. tritici Puccinia triticina rust diseases translocation Triticum aestivum Varietal selection. Specialized plant breeding, plant breeding aims wheat wide hybridization Puccinia striiformis Translocation Monocotyledones Plant pathogen Basidiomycetes Puccinia triticina Parasitic rust Genetic determinism Cereal crop Fungus resistance Fungi Puccinia recondita Aegilops Gramineae Angiospermae Genetic improvement Interspecific hybridization Aegilops kotschyi Herbaceous plant Spermatophyta Puccinia striiformis f. sp. tritici Triticum aestivum wide hybridization Thallophyta
ISSN:	0179-9541, 1439-0523
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Shrnutí:	The tendency of unpaired meiotic chromosomes to undergo centric misdivision was exploited to translocate leaf rust and stripe rust resistance genes from an Aegilops kotschyi addition chromosome to a group 2 chromosome of wheat. Monosomic and telosomic analyses showed that the translocation occurred to wheat chromosome arm 2DL. The introgressed region did not pair with the corresponding wheat 2DL telosome during meiosis suggesting that a whole arm may have been transferred. Female transmission of the resistance was about 55% whereas male transmission was strongly preferential (96%). The symbols Lr54 and Yr37 are proposed to designate the new resistance genes.
Bibliografia:	ark:/67375/WNG-7914FDMH-B ArticleID:PBR1116 istex:AE1C95F3A7BD6F88B03DD0A99D1408B0EFC89088 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0179-9541 1439-0523
DOI:	10.1111/j.1439-0523.2005.01116.x