RFLP analysis of an Aegilops ventricosa chromosome that carries a gene conferring resistance to leaf rust (Puccinia recondita) when transferred to hexaploid wheat

Bonhomme, Antoine; Gale, M. D.; Koebner, R. M. D.; Nicolas, P.; Jahier, Joseph; Bernard, Michel

doi:10.1007/bf00222919

Cited by 30 publications

(12 citation statements)

References 17 publications

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“…While genotyping the mapping population, QCB36 (OR9900553) was found to carry the 2N v S‐2AS.2AL and 5B:7B chromosome translocations. These chromosome translocations have also been found in other VPM1‐derived lines (Badaeva et al, 2008; Bariana and McIntosh, 1994; Bonhomme et al, 1995). QCB36 was also found to carry the 1BS.1RL translocation (Zeller, 1973).…”

Section: Characteristicssupporting

confidence: 60%

Registration of the OS9XQ36 Mapping Population of Wheat (Triticum aestivum L.)

Riera‐Lizarazu

Peterson

Wang

et al. 2010

J of Plant Registrations

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The OS9XQ36 wheat (Triticum aestivum L.) mapping population (Reg. No. MP‐2, NSL 465170) is a set of 164 F6–derived recombinant inbred lines (USDA–ARS Germplasm Resources Information Network [GRIN] accession no. through ) from the cross between OS9A (PI 658243), a single plant selection from the cultivar Stephens (CI 17596), and QCB36 (PI 658244), a single plant selection from the elite breeding line OR9900553. This population was developed to investigate the consistently lower grain hardness and superior end‐use quality of OR9900553 compared with Stephens. This population has also been genotyped with diversity array technology (DArT) and simple sequence repeat (SSR) markers resulting in the construction of a 270‐marker linkage map covering 1785 cM at a density of one marker per 7 cM. This F6–derived population is one of 20 mapping populations being used by the WheatCAP consortium (http://maswheat.ucdavis.edu/) for extensive quantitative trait locus analysis and forms part of a publicly available long‐term genetic resource to map complex traits in wheat.

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Section: Characteristicssupporting

confidence: 60%

Registration of the OS9XQ36 Mapping Population of Wheat (Triticum aestivum L.)

Riera‐Lizarazu

Peterson

Wang

et al. 2010

J of Plant Registrations

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“…Pchl has been used in wheat improvement and was transferred to several germplasms and cultivars (Roazon, VPM1, and Rendevous in Europe; and Madsen and Hyak in the United States). Bariana & Mclntosh (1993, 1994 and Bonhomme et al (1995) showed that VPM1 also had Ae. ventricosa-derived genes Lr37 for leaf rust resistance, Sr38 for stem rust resistance, and Yr17 for stripe rust resistance, which were derived from chromosome 6M v and mapped to the short arm of wheat chromosome 2A.…”

Section: Gb5from Ae Speltoidesmentioning

confidence: 99%

Characterization of wheat-alien translocations conferring resistance to diseases and pests: current status

et al. 1996

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Wild relatives of common wheat, Triticum aestivum, and related species are an important source of disease and pest resistance and several useful traits have been transferred from these species to wheat. C-banding and in situ hybridization analyses are powerful cytological techniques allowing the detection of alien chromatin in wheat. Cbanding permits identification of the wheat and alien chromosomes involved in wheat-alien translocations, whereas genomic in situ hybridization analysis allows determination of their size and breakpoint positions. The present review summarizes the available data on wheat-alien transfers conferring resistance to diseases and pests. Ten of the 57 spontaneous and induced wheat-alien translocations were identified as whole arm translocations with the breakpoints within the centromeric regions. The majority of transfers (45) were identified as terminal translocations with distal alien segments translocated to wheat chromosome arms. Only two intercalary wheat-alien transloctions were identified, one induced by radiation treatment with a small segment of rye chromosome 6RL (H25) inserted into the long arm of wheat chromosome 4A, and the other probably induced by homoeologous recombination with a segment derived from the long arm of a group 7 Agropyron elongatum chromosome with Lrl9 inserted into the long arm of 7D. The presented information should be useful for further directed chromosome engineering aimed at producing superior germplasm.

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“…Molecular techniques now provide a considerable range of methods for identifying alien sequences in a particular species and hence of establishing the extent of introgression. Randon amplified polymorphic DNA (RAPDs), restriction fragment length polymorphisms (RFLPs) and microsatellite analysis have been used to examine nuclear DNA, chloroplast DNA (cpDNA) and mitochrondial DNA (mtDNA) to provide evidence of introgression occurrence ( Hillis 1987; Schmidt & Heslop‐Harrison 1993, 1996; Watanabe 1994; Bonhomme et al . 1995 ; Francis et al .…”

Section: Detecting Introgression and Hybridization In Plant Populationsmentioning

confidence: 99%

Wild relatives and crop cultivars: detecting natural introgression and farmer selection of new genetic combinations in agroecosystems

Jarvis¹,

Hodgkin²

1999

Molecular Ecology

194

129

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Whether new combinations of genes that result from hybridization and introgression between wild and cultivated taxa are maintained, with the resultant development of populations with new characteristics, depends on natural selection, and in the case of crops, on human selection. While many cases of deliberate introgression of desirable traits into crop cultivars as part of breeding programmes are known, the extent and significance of natural or farmer‐assisted introgression is uncertain. A range of techniques have been used to document natural hybridization and introgression of agricultural crops and their wild relatives in many crops including maize, wheat, barley, oats, pearl millet, foxtail millet, quinoa, hops, hemp, potato, cocona, casava, common bean, cowpea, pigeon pea, carrots, squash, tomato, radish, letuce, chilli, beets, sunflower, cabbage, and rasberries. However, the majority of these studies are based on morphological characters, and few have investigated the frequency with which such new types are produced and retained in natural and agroecosystems for farmer selection. Even more limited is information on the role of farmers in recognizing and selecting new genetic variation from the natural introgression of crops with their wild relatives, and the impact, once selected, of these new genetic combinations on the crop diversity. Molecular evaluation of natural introgression linked to investigations of farmer recognition and use of introgressed types provide ways of evaluating whether farmer selection for introgressed types is a significant process in increasing the genetic diversity of crop plants.

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RFLP analysis of an Aegilops ventricosa chromosome that carries a gene conferring resistance to leaf rust (Puccinia recondita) when transferred to hexaploid wheat

Cited by 30 publications

References 17 publications

Registration of the OS9XQ36 Mapping Population of Wheat (Triticum aestivum L.)

Registration of the OS9XQ36 Mapping Population of Wheat (Triticum aestivum L.)

Characterization of wheat-alien translocations conferring resistance to diseases and pests: current status

Wild relatives and crop cultivars: detecting natural introgression and farmer selection of new genetic combinations in agroecosystems

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