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  • 1
    Electronic Resource
    Electronic Resource
    Sequence-tagged sites (STSs) as standard landmarkers in the rice genome (1994)
    Springer
    Theoretical and applied genetics 89 (1994), S. 728-734 
    Details
    ISSN: 1432-2242
    Keywords: STS ; RFLP ; Rice ; Genetic map ; Coding region
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Generating sequence-tagged sites (STSs) is a prerequisite to convert a genetic map to a physical map. With the help of sequence information from these STSs one can also isolate specific genes. For these purposes, we have designed PCR primer sets, of 20 bases each, by reference to sequences of restriction fragment length polymorphism (RFLP) landmarkers consisting of rice genomic clones. These markers were evenly distributed over the 12 chromosomes and were shown to be single copy by Southern-blot analysis. With improved PCR protocols, 63 standard STS landmarkers in the rice genome were generated. Similarity searches of all partial sequences of RFLP landmarkers by the FASTA algorithm showed that 2 of the 63 RFLP landmarkers, G357 and G385, contained part of the ORFs of aspartate aminotransferase and protein kinase, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223712
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Detection of segregation distortions in an indica-japonica rice cross using a high-resolution molecular map (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 145-150 
    Details
    ISSN: 1432-2242
    Keywords: Gametophyte gene ; Genetic map ; Hybrid sterility gene ; Rice ; Segregation distortion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We have constructed a high-resolution rice genetic map containing 1383 DNA markers covering 1575 cM on the 12 linkage groups of rice using 186 F2 progeny from a cross between a japonica variety, ‘Nipponbare’, and an indica variety, ‘Kasalath’. Using this high-resolution molecular linkage map, we detected segregation distortion in a single wide cross of rice. The frequencies of genotypes for 1181 markers with more than 176 genotype data were plotted along this map to detect segregation distortion. Several types of distorted segregation were observed on 6 of the chromosomes. We could detect 11 major segregation distortions at ten positions on chromosomes 1, 3, 6, 8, 9, and 10. The strongest segregation distortion was at 107.2 cM on chromosome 3 and may be the gametophyte gene 2 (ga-2). The ‘Kasalath’ genotype at this position was transmitted to the progeny with about a 95% probability through the pollen gamete. At least 8 out of the 11 segregation distortions detected here are new. The use of the high-resolution molecular linkage map for improving our understanding of the genetic nature and cause of these segregation distortions is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223368
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Identification of quantitative trait loci controlling heading date in rice using a high-density linkage map (1997)
    Springer
    Theoretical and applied genetics 95 (1997), S. 1025-1032 
    Details
    ISSN: 1432-2242
    Keywords: Key words RFLP markers ; Days-to-heading ; QTL analysis ; Rice ; Epistatic interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Quantitative trait locus (QTL) analysis has been carried out to identify genes conferring heading date in rice. One hundred and eighty six F2 plants derived from a cross between a japonica variety, Nipponbare, and an indica variety, Kasalath, were used as a segregating population for QTL mapping and more than 850 markers were employed to identify QTLs. Scan-analysis revealed the existence of two QTLs with large effects, Hd-1 and Hd-2, one in the middle of chromosome 6 and one at the end of chromosome 7, respectively. For both loci, the Kasalath alleles reduced days-to-heading. In addition, three QTLs with minor effects, Hd-3, Hd-4 and Hd-5, were found to be located on chromosomes 6, 7 and 8 based on a secondary scan analysis which was carried out by removing the phenotypic effects of Hd-1 and Hd-2. For the three secondary loci, the Nipponbare alleles reduced days-to-heading. The five QTLs explained 84% of the total phenotypic variation in the F2 population based on a multiple-QTL model. The presence of a digenic interaction between Hd-1 and Hd-2 was clearly suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050658
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    Paper (German National Licenses)
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