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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Leaf rust and stripe rust resistance genes transferred to common wheat from Triticum dicoccoides
Euphytica, Volume 143, No. 1-2, Year 2005
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Description
Linked leaf rust and stripe rust resistance genes introduced from Triticum dicoccoides protected common wheat seedlings against a range of pathotypes of the respective pathogens. The genes were chromosomally mapped using monosomic and telosomic analyses, C-banding and RFLPs. The data indicated that an introgressed region is located on wheat chromosome arm 6BS. The introgressed region did not pair with the 'Chinese Spring' 6BS arm during meiosis possibly as a result of reduced homology, but appeared to pair with 6BS of W84-17 (57% of pollen mother cells) and 'Avocet S'. The introgressed region had a very strong preferential pollen transmission (0.96-0.98) whereas its transmission through egg cells (0.41-0.66) varied with the genetic background of the heterozygote. Homozygous resistant plants had a normal phenotype, were fertile and produced plump seeds. Symbols Lr53 and Yr35 are proposed to designate the respective genes. © Springer 2005.
Authors & Co-Authors
Marais, Gideon Francois
South Africa, Stellenbosch
Stellenbosch University
Pretorius, Zacharias A.
South Africa, Bloemfontein
University of the Free State
Wellings, C. R.
Australia, Sydney
The University of Sydney
McCallum, Brent D.
Canada, Winnipeg
Cereal Research Centre
Marais, Ansie S.
South Africa, Stellenbosch
Stellenbosch University
Statistics
Citations: 5
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1007/s10681-005-2911-6
ISSN:
00142336
Research Areas
Genetics And Genomics