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  • 1
    Electronic Resource
    Electronic Resource
    B chromosome in a rice aneuploid variation (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 564-568 
    Details
    ISSN: 1432-2242
    Keywords: Key words Rice ; B chromosome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  An awned rice plant was discovered among the progeny of the triploid Zhongxian 3037. Cytological investigation showed that this awned plant was a variation with extra chromosomes. Based on the properties of the extra chromosomes during both meiosis and mitosis – e.g., short stature, darkly staining, instability in chromosome number, and lack of synapsis with A chromosomes – they could be considered to be B chromosomes in rice. The B chromosome(s) in both asexual and sexual progenies exhibited a unique segregation that is different from that of telotrisomics and other aneuploids. Moreover molecular marker analysis detected no dosage effects between the B-chromosome plant and the normal diploid of Zhongxian 3037, indicating that the B chromosomes might not be directly derived from any A-chromosome fragments in rice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051516
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  • 2
    Electronic Resource
    Electronic Resource
    RFLP tagging of a new semidwarfing gene in rice (1994)
    Springer
    Theoretical and applied genetics 88 (1994), S. 898-900 
    Details
    ISSN: 1432-2242
    Keywords: Semidwarfism ; Restriction fragment length polymorphism ; Rice (Oryza sativa L.) ; DNA markers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new rice semidwarfing gene which is not allelic tosd1, temporarily designated assdg, might be of use as a new source of semidwarfism in rice breeding programs. We report here the identification of a DNA marker closely linked to this gene. The DNA marker was identified by testing 120 mapped rice RFLP makers as hybridization probes for Southern analysis of a pair of nearly isogenic lines with or withoutsdg. Linkage association of the marker with the gene was verified using a F2 population segregating for semidwarfism. RFLP analysis showed thatsdg is closely linked to a single-copy DNA clone RZ182 on chromosome 5, with a distance of 4.3 centiMorgans between them. This marker may facilitate early selection for the semidwarfing gene in rice breeding programs
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01254003
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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