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  • 1
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    Self-incompatibility reactions in wild species of the genusBeta and their relation to taxonomical classification and geographical origin (1995)
    Springer
    Details
    Publication Date: 1995-12-01
    Print ISSN: 0925-9864
    Electronic ISSN: 1573-5109
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Chromosomal Assignment of Three Enzyme Coding Loci (Icd1, Nad-Mdh1 and Aco1) Using Primary Trisomics in Beet (Beta vulgaris L.) (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 111 (1993), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Chromosomal assignment of three enzyme coding loci was established by evaluation of the segregation distortion in the offspring of crosses between heterozygous primary trisomics of a complete series in beet (Beta vulgaris) and heterozygous diploid pollinators. Depending on the rate of isozyme polymorphism in the original plant material, at least one, but more often two, crossing cycles were needed to obtain the desired segregating populations. In one case, a backcross was used to confirm the segregation distortion, and in two cases, the chromosomal assignment of the isozyme loci was confirmed by studying the dosage shift in the electrophoretic pattern of the critical trisomics. The isocitrate dehydrogenase locus (Icd1) is situated on chromosome II, the NAD-dependent malate dehydrogenase locus (Nad-Mdh1) on chromosome III, and the aconitase locus (Aco1) on chromosome IV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1993.tb00627.x
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  • 3
    Electronic Resource
    Electronic Resource
    The Diploidised Meiosis of Tetraploid Beta macrocarpa and its Possible Application in Breeding Sugar Beet (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 103 (1989), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Accessions of Beta macrocarpa Guss., collected on the Canary Islands, were tetraploid (2n = 36). Three of these accessions were studied in detail. The plants were rather uniform in their morphological appearance, both within and between accessions, and were annual and fully self-compatible. Meiosis was completely diploidised, suggesting an alloploid nature of the tetraploid species. Crosses with diploid B. vulgaris yielded triploid hybrids which were sterile or nearly so; a few descendants of such hybrids were highly aneuploid. Crosses between tetraploid B. macrocarpa and autotetraploid cytotypes of B. vulgaris showed variable results, only part of these crosses yielded tetraploid hybrids. The tetraploid hybrids exhibited somewhat higher fertility than the triploids. An F2 generation showed partial hybrid dwarfness, partial fertility and segregation for carliness and coloration of the hypocotyl. All hybrids had multivalents at meiosis (averages: 2.5—5.4 multivalents per pollen mother cell), indicating suppression of the diploidised meiosis. The possibilities of application of the diploidised meiosis in breeding sugar beet are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1989.tb00371.x
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  • 4
    Electronic Resource
    Electronic Resource
    Resistance to Polymyxa betae in Beta Species of the Section Procumbentes, in Hybrids with B. vulgaris and in Monosomic Chromosome Additions of B. procumbens in B. vulgaris (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 109 (1992), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Resistance to Polymyxa betae was studied in Beta species of the section Procumbentes, in hybrids of B. vulgaris with B. procumbens or B. patellaris, and in monosomic additions of chromosomes of B. procumbens in B. vulgaris. In all experiments P. betae infested with beet necrotic yellow vein virus (BNYVV) was used. This virus causes rhizomania in sugar beet, and the effect of vector resistance was studied by measuring virus concentrations. Cystosori of P. betae were not found in the wild species and the hybrids. Virus concentrations in these plants were low, and in half the number of plants the virus could not be detected. Results of experiments with the monosomic additions indicate, that resistance to P. betae in B. procumbens is located on chromosomes 4 and 8. Some cystosori were present in these addition types, while cystosori were abundantly present in other addition types and all sib-plants. Virus concentrations in the addition types 4 and 8 were lower than in their sib-plants, but in almost all plants the virus could be detected. A significant correlation (r = 0.91; P 〈 0.05) between average numbers of cystosori and average virus concentrations was found when addition families of type 8 were tested together with B. procumbens and B. vulgaris cv. ‘Regina’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1992.tb00184.x
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  • 5
    Electronic Resource
    Electronic Resource
    Monosomic additions in beet (Beta vulgaris) carrying extra chromosomes of B. procumbens (1988)
    Springer
    Theoretical and applied genetics 76 (1988), S. 656-664 
    Details
    ISSN: 1432-2242
    Keywords: Beta vulgaris ; Beta procumbens ; Alien monosomic additions ; Plant development in vivo ; Development in vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Alien monosomic additions in beet (Beta vulgaris), each carrying one of the nine chromosomes of B. procumbens, were grown in vivo and in vitro to study the effect of the alien chromosomes on plant development. All additional chromosomes caused a reduction of the growth rate in vivo, which, in one case was so strong that some of the plants died as seedlings. In general, the morphological plant characteristics were not very useful to distinguish the addition types; this could have been the results of the wide variation in the recipient parent. However, some developmental characteristics proved to be highly chromosome-specific; for plants in vivo this was annuality, in combination with early or late flowering. If grown in vitro, chromosome specificity was observed for growth type (rosette or elongated stem), occurrence and rate of vitrification, occurrence and morphology of wound callus, formation of additional meristems on the midribs of leaves, formation of roots and a specific reaction to benzylaminopurine (BAP) the medium. Two chromosome types of B. procumbens caused resistance to the beet cyst nematode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303509
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Inheritance of resistance to beet necrotic yellow vein virus in Beta vulgaris conferred by a second gene for resistance (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 740-746 
    Details
    ISSN: 1432-2242
    Keywords: Key words Beet necrotic yellow vein virus ; Beta vulgaris ; Inheritance ; Resistance genes ; Rhizomania ; STS markers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract   Rhizomania is a serious disease of sugar beet, caused by beet necrotic yellow vein virus (BNYVV). The disease can only be controlled by the use of resistant cultivars. The accession Holly contains a single dominant gene for resistance, called Rz. The identification of a locus for resistance that differs from Rz would provide possibilities to produce cultivars with multiple resistance to BNYVV. Inheritance of resistance to BNYVV was studied by screening progenies of crosses between resistant plants of the accessions Beta vulgaris subsp. maritima WB42 and B. vulgaris subsp. vulgaris Holly-1–4 or R104. Observed and expected segregation ratios were compared to elucidate whether the resistance genes in the three accessions are alleles or situated on different loci. STS markers, linked to the genes for resistance, were used to study the segregation in more detail. The results demonstrated that the genes for resistance to BNYVV inHolly-1-4 and WB42 are closely linked. The gene for resistance in R104 is at the same locus as in Holly-1-4, and also closely linked to the gene in WB42. As the Holly resistance gene has been named Rz, the name Rz2 is proposed to refer to the resistance gene in WB42. Consequently, the gene Rz should be referred to as Rz1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051292
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  • 8
    Electronic Resource
    Electronic Resource
    Monosomic additions in beet (Beta vulgaris) carrying extra chromosomes of Beta procumbens (1988)
    Springer
    Theoretical and applied genetics 76 (1988), S. 577-586 
    Details
    ISSN: 1432-2242
    Keywords: Beta vulgaris ; Beta procumbens ; Alien monosomic additions ; Isozyme markers ; Chromosome identification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Eleven isozyme systems were used to identify the extra chromosomes, originating from Beta procumbens, in progenies of 33 monosomic additions in beet (B. vulgaris). Nine groups of monosomic additions could be distinguished, representing the nine different chromosome types of B. procumbens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00260912
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  • 9
    Electronic Resource
    Electronic Resource
    Long-range organization of a satellite DNA family flanking the beet cyst nematode resistance locus (Hs1) on chromosome-1 of B. patellaris and B. procumbens (1994)
    Springer
    Theoretical and applied genetics 89 (1994), S. 459-466 
    Details
    ISSN: 1432-2242
    Keywords: Molecular markers Beet cyst nematode resistance ; Hs1 Heterodera schachtii Schm ; Satellite DNA Monosomic fragment additions Beta ; Pulsed-field gel electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract New members of a satellite DNA family (Sat 121), specific for wild beets of the section Procumbentes of the genus Beta, were isolated. Sequence analysis showed that the members of Sat-121 fall into two distinct classes. The organization of Sat-121 in the vicinity of a beet cyst nematode (Heterodera schachtii Schm.) resistance locus (Hs1) in B. patellaris and B. procumbens was investigated by pulsed-field gel electrophoresis (PFGE) using DNA from a series of resistant monosomic fragment additions, each containing an extra chromosome fragment of B. patellaris chromosome-1 (pat-1) in B. vulgaris. In this way several clusters of Sat-121 flanking the Hs1 pat-1 locus were identified. In nematode resistant diploid introgressions (2n=18), which contain small segments of B. procumbens chromosome-1 (pro-1) in B. vulgaris, only two major Sat-121 clusters were detected near the Hs1 pro-1 locus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00225381
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  • 10
    Electronic Resource
    Electronic Resource
    Isolation and characterization of RAPD-based markers linked to the beet cyst nematode resistance locus (Hs1 pat-1) on chromosome 1 of B. patellaris (1995)
    Springer
    Theoretical and applied genetics 90 (1995), S. 885-891 
    Details
    ISSN: 1432-2242
    Keywords: Randomly amplified polymorphic DNA (RAPD) ; Deletion mapping ; Sequence Tagged Site (STS) ; Monosomic fragment additions ; Beet cyst nematode resistance ; Heterodera schachtii Schm ; Beta patellaris
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A beet cyst nematode (BCN)-resistant telosomic addition of B. patellaris chromosome 1 in B. vulgaris was used to isolate 6 RAPD markers linked to the BCN resistance locus Hs1 pat-1. Southern analysis showed that the analyzed RAPD products contain either low-, middle or high-repetitive DNA. The relative positions of the random amplified polymorphic DNA (RAPD) markers and of the restriction fragment length polymorphism (RFLP) loci corresponding to the low-repetitive RAPD products were determined by deletion mapping using a panel of seven nematode-resistant B. patellaris chromosome-1 fragment additions. One RAPD marker, OPB11800, was found to be present in two copies on the long arm telosome of B. patellaris chromosome 1. These copies are closely linked to the BCN resistance gene and flank the gene on both sides. On the basis of the nucleotide sequence of OPB11800, sequence-tagged site (STS) primers were developed that amplify specific fragments derived from the two OPB11800 loci. These STS markers can be used in the map-based cloning of the BCN gene, as they define start and finishing points of a chromosomal walk towards the Hs1 pat-1 locus. Two copies of the middle-repetitive OPX21100 marker were mapped in the same interval of the deletion mapping panel as the resistance gene locus and thereby belong to the nearest markers as yet found for the BCN gene in B. patellaris.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222027
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