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  • 1
    Electronic Resource
    Electronic Resource
    Isozyme analysis of primary trisomies in beet (Beta vulgaris L.). Genetical characterization and techniques for chromosomal assignment of two enzyme-coding loci: leucine aminopeptidase and glutamate oxaloacetate transaminase (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 761-768 
    Details
    ISSN: 1432-2242
    Keywords: Primary trisomies ; Beet ; Beta vulgaris ; Isozyme polymorphism ; Chromosomal assignment ; Distorted segregation ; Dosage shift
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Segregating families of beet (Beta vulgaris) were used to verify the monofactorial inheritance of two enzyme-coding loci, leucine aminopeptidase (Lap1) and glutamate oxaloacetate transaminase (Got3). With a series of primary trisomies and using three methods to discriminate between the critical trisomic (the locus is situated on the triplicated chromosome) and the non-critical ones, it was possible to allocate the two loci to beet chromosomes I and II, respectively. For the locus Lap1 distorted segregation ratios were estimated, and the incorporation of three alleles into one plant was attempted. In the case of Got3 the measurement of the allele dosage effect after electrophoresis was chosen as the major strategy. The output of laser densitometric scans were subjected to the non-parametrical Wilcoxon-Mann-Whitney test.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222667
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  • 2
    Electronic Resource
    Electronic Resource
    Expression in vitro of resistance to Heterodera schachtii in hairy roots of an alien monotelosomic addition plant of Beta vulgaris, transformed by Agrobacterium rhizogenes (1990)
    Springer
    Euphytica 48 (1990), S. 153-157 
    Details
    ISSN: 1573-5060
    Keywords: Beta vulgaris ; Beta patellaris ; Agrobacterium rhizogenes ; beet cyst nematode ; Heterodera schachtii ; nematode resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Hairy roots, induced by Agrobacterium rhizogenes, were obtained of nematode susceptible beet plants (Beta vulgaris) and of the nematode resistant alien monotelosomic addition AN5, carrying a telosome from B. patellaris. The additional telosome was found to be stably present in vitro in the roots of AN5. The hairy root cultures were inoculated with larvae of the beet cyst nematode Heterodera schachtii. On the root culture of AN5 significantly less cysts developed than on the other root cultures. These results indicate that the resistance to the beet cyst nematode is expressed in the roots after transformation and can be monitored under in vitro conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037194
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Natural variation within the genus Beta and its possible use for breeding sugar beet: A review (1990)
    Springer
    Euphytica 49 (1990), S. 57-76 
    Details
    ISSN: 1573-5060
    Keywords: breeding ; Beta vulgaris ; sugar beet ; natural variation ; wild Beta species ; disease resistances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Sugar beet is a relatively young crop, which supposedly has a narrow genetic base. Natural variation occurring in primitive beet varieties and in wild Beta species has been used for breeding sugar beet. This paper reviews information on desirable characteristics in Beta germplasm and the attempts made for the introgression of such characters into commercial breeding material. After an introduction on the availability of germplasm and the possibilities of hybridisation, attention is focussed on the mating system (especially male sterility), on morphological and physiological characteristics, including yield and sugar content, and on resistances to diseases and pests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024131
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  • 4
    Electronic Resource
    Electronic Resource
    Isolation of DNA markers linked to a beet cyst nematode resistance locus in Beta patellaris and Beta procumbens (1992)
    Springer
    Molecular genetics and genomics 235 (1992), S. 432-440 
    Details
    ISSN: 1617-4623
    Keywords: Heterodera schachtii ; Beta vulgaris ; Monosomic additions ; Molecular markers ; Disease resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In cultivated beet no useful level of resistance of the beet cyst nematode (BCN) Heterodera schachtii Schm. has been found, unlike the situation in wild species of the section Procumbentes. Stable introgression of resistance genes from the wild species into Beta vulgaris has not been achieved, but resistant monosomic additions (2n =18 + 1), diploids of B. vulgaris with an extra alien chromosome carrying the resistance locus, have been obtained. Here we describe a new series of resistant monosomic fragment addition material of B. patellaris chromosome 1 (pat-1). We further describe the cloning of a single-copy DNA marker that specifically hybridizes with a monosomic addition fragment of approximately 8 Mb (AN5-90) carrying the BCN resistance locus. This marker and another fragment-specific, single-copy DNA marker probably flank the BCN locus on the addition fragment present in the AN5-203 material, which is approximately 19 Mb in size. Furthermore, several specific repetitive DNA markers have been isolated, one of which hybridizes to AN5-90 and also to DNA from a smaller DNA segment of Beta procumbens, present in line B883, carrying a BCN resistance locus introgressed into the B. vulgaris genome. This suggests that the specific repetitive marker is closely linked to the BCN locus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00279390
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    Paper (German National Licenses)
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