Full TGIF Record # 106261
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Author(s):Humphreys, M. W.; Hymphreys, J.; Donnison, I.; King, I. P.; Thomas, H. M.; Ghesquière, M.; Durand, J-L.; Rognli, O. A.; Zwierzykowski, Z.; Rapacz, M.
Author Affiliation:Humphreys, M.W., Humphreys, J., Donnison, King & Thomas: Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, United Kingdom; Ghesquière & Durand: INRA, Unite de Genetique et d'Amelioration des Plantes Fourrageres, Lusignan, France; Rognli: The Agricultural University of Norway, Department of Chemistry and Biotechnology, Aas, Norway; Zwierzykowski: Institute of Plant Genetics, Polish Academy of Sciences, Poznan, Poland; & Rapacz: Agricultural University of Cracow, Deparment of Plant Phisiology, Krakow, Poland
Title:Molecular breeding and functional genomics for tolerance to abiotic stress
Section:Tolerance to abiotic stress
Other records with the "Tolerance to abiotic stress" Section
Meeting Info.:Third International Symposium, Molecular Breeding of Forage and Turf, Dallas, Texas and Ardmore, Oklahoma, May 18-22, 2003
Source:Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. 2004, p. 61-80.
# of Pages:20
Publishing Information:Dordrecht: Kluwer Academic Publishers
Series:Developments in Plant Breeding Volume 11
Keywords:TIC Keywords: Molecular genetics; Breeding; Resistance; Stress; Lolium; Festuca; Introgression; Breeding program; Hybridization; Gene mapping; Mitotic recombination; Genomes
Abstract/Contents:"Sustainability is a measure of our ability to produce food with the maximum of efficiency combined with the minimum of damage to the environment. Grasslands represent over 40% of all agricultural land in the European Union, and over 70% in the United Kingdom. Whilst Lolium in Europe is considered to be the ideal source of profitable and safe high quality animal forage, its general poor persistency limits its use to favourable growing areas. Fortunately, genes for abiotic stress resistance are transferred readily from closely related Festuca species by conventional breeding technologies. Introgression mapping allows the assembly of desirable gene combinations and molecular markers to assist with their selection in breeding programmes. Additional new androgenesis techniques have led to novel genotypes rarely observed as outcomes of breeding programmes. Lolium x Festuca hybrids display promiscuous chromosome recombination enabling genes from one species to be transferred readily to homoeologous chromosome regions where they both function normally and remain stable. Despite the close homology between Lolium and Festuca species, repetitive DNA sequences differ sufficiently for their genomes to be distinguished, by genomic in situ hybridisation (GISH). This enables the physical mapping of genes for abiotic stress resistance transferred from Festuca to Lolium. Further chromosome recombination between homoeologous Lolium and Festuca sequences enable Festuca introgressions to be "dissected", and recombination series created. Knowledge of synteny and gene sequences within model species amongst the Poaceae, combined with the development of sequenced molecular markers, and bacterial artificial chromosomes is enabling the isolation of genes for abiotic stress resistance."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
2004. Molecular breeding and functional genomics for tolerance to abiotic stress. Molecular Breeding of Forage and Turf: Proceedings of the 3rd International Symposium, Molecular Breeding of Forage and Turf. p. 61-80.
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