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  • 1
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    PCR Assays for the Lr37‐Yr17‐Sr38 Cluster of Rust Resistance Genes and Their Use to Develop Isogenic Hard Red Spring Wheat Lines (2003)
    Wiley
    Details
    Publication Date: 2003-09-01
    Print ISSN: 0011-183X
    Electronic ISSN: 1435-0653
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Comparative RFLP mapping of Triticum monococcum genes controlling vernalization requirement (1998)
    Springer
    Theoretical and applied genetics 97 (1998), S. 968-975 
    Details
    ISSN: 1432-2242
    Keywords: Key words Triticum monococcum ; Vernalization genes ; Vrn-1 ; Vrn-2 ; RFLP ; Comparative maps
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The adaptability of Triticum aestivum to a large range of environments is partially due to genetic differences in sensitivity to vernalization. The most potent gene reducing the vernalization requirement in hexaploid wheat is Vrn-A1. An orthologous vernalization gene, designated Vrn-A m 1, was mapped in the diploid wheat Triticum monococcum between RFLP markers Xwg908 and Xabg702 on the long arm of chromosome 5AmL. The orthology of VrnA m 1 with Vrn-A1 (5A wheat, originally Vrn1), Vrn-D1 (5D wheat, originally Vrn3), Vrn-R1 (5R rye, originally Sp1) and Vrn-H1 (5H barley, originally Sh2) was shown by mapping RFLP markers linked to these vernalization genes on the T. monococcum linkage map. A second vernalization gene, designated Vrn-A m 2, was found in the distal region of chromosome 5AmL within a segment translocated from homoeologous group 4. This gene is completely linked to RFLP marker Xbcd402 and located between the same RFLP markers (Xβ-Amy-1 and Xmwg616) as the Vrn-H2 (originally Sh) locus in Hordeum vulgare.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050978
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic and physical characterization of grain texture-related loci in diploid wheat (1999)
    Springer
    Molecular genetics and genomics 262 (1999), S. 846-850 
    Details
    ISSN: 1617-4623
    Keywords: Key words Grain hardness ; Grain-softness-related protein ; Puroindoline ; Wheat ; Physical map
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Endosperm texture, i.e. the hardness or softness of the grain, is an important quality criterion in cereals because it determines many grain end-use properties. Grain softness is the dominant trait and is mainly controlled by the Ha locus on the short arm of chromosome 5D in hexaploid bread wheat. Genes for puroindoline a (Pina-D1), puroindoline b (Pinb-D1), and grain softness related protein (Gsp-D1) have been shown to be linked to the Ha locus in different mapping populations and have been associated with the expression of grain softness. The study of the linkage relationships among these genes has been limited by the low level of polymorphism in the D genome of hexaploid Triticum aestivum. In the present study, a highly polymorphic Triticum monococcum mapping population was used to analyze linkage relationships among these three genes. Gsp-A m 1 and Pina-A m 1 were found to be completely linked and lie 0.14 cM distal to Pinb-A m 1 in the distal region of the short arm of chromosome 5Am. The tight genetic linkage among these three genes was paralleled by their physical proximity within a single 105-kb clone isolated from a T. monococcum bacterial artificial chromosome (BAC) library. A restriction map of this BAC clone showed that Pina-A m 1 is located between Pinb-A m 1 and Gsp-A m 1. Partial sequences of the T. monococcum genes showed a high degree of similarity with their T. aestivum counterparts (≥ 94%). Marker-assisted selection strategies based on the tight linkage among Ha-related genes are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380051149
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  • 4
    Electronic Resource
    Electronic Resource
    Asr genes belong to a gene family comprising at least three closely linked loci on chromosome 4 in tomato (1996)
    Springer
    Molecular genetics and genomics 252 (1996), S. 489-492 
    Details
    ISSN: 1617-4623
    Keywords: Lycopersicon esculentum ; Asr ; RFLP mapping ; Gene family
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Asr1, Asr2 andAsr3 are three homologous clones isolated from tomato whose expression is believed to be regulated by abscisic acid (ABA); the corresponding genes thus participate in physiological and developmental processes such as responses of leaf and root to water stress, and fruit ripening. In this report, results obtained with Near Isogenic Lines reveal thatAsr1, Asr2 andAsr3 represent three different loci. In addition, we map these genes on the restriction fragment length polymorphism (RFLP) map of the tomato genome by using an F2 population derived from an interspecific hybrid crossL. esculentum × L. penelli. RFLP data allow us to map these genes on chromosome 4, suggesting that they belong to a gene family. The elucidation of the genomic organization of theAsr gene family may help in understanding the role of its members in the response to osmotic stress, as well as in fruit ripening, at the molecular level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02173015
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