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  • 1
    Electronic Resource
    Electronic Resource
    Storage of sugarbeet pollen (1986)
    Springer
    Euphytica 35 (1986), S. 777-783 
    Details
    ISSN: 1573-5060
    Keywords: Beta vulgaris ; sugarbeet ; pollen ; cryopreservation ; pollen storage ; liquid nitrogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary To develop the technology for long-term pollen preservation, sugarbeet pollen was collected from plants grown in the greenhouse and in the field, and was stored 1 day to 1 year at 5, -18, and -196°C. Pollen containing about 12% moisture was successfully stored in liquid nitrogen (LN2) up to 1 year; this pollen effected fertilization of male-sterile flowers as well as freshly collected pollen. Germination of the resultant seed was good and not different from seed from fresh pollinations. Pollen stored at -18°C for 1 year did not result in as much seed set as fresh pollen, and 1 year at 5°C was essentially lethal. In vitro pollen germination served as a post-storage viability measure, provided the pollen was hydrated before germination. The methods tested in these experiments provided a relatively simple, reliable, and inexpensive means for preservation of sugarbeet pollen for breeding purposes and for preservation of genetic resources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00028585
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  • 2
    Electronic Resource
    Electronic Resource
    Polyploid and maternal effects on Rhizoctonia root rot resistance in sugarbeet (1976)
    Springer
    Euphytica 25 (1976), S. 419-423 
    Details
    ISSN: 1573-5060
    Keywords: Beta vulgaris ; sugarbeet ; Rhizoctonia solani ; disease resistance ; plant breeding ; hybrid sugarbeet ; triploid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Three sugarbeet breeding lines partially resistant to the root-rotting fungus, Rhizoctonia solani, were converted to the tetraploid condition without selection. These three diploid and tetraploid lines were crossed with three diploid male-sterile lines to produce equivalent diploid and triploid hybrids. The triploid hybrids were significantly more resistant to Rhizoctonia than were the diploid hybrids. However, the tetraploid resistant limes were no different than their diploid equivalent lines. Reciprocal crosses provided no evidence of maternal effect on resistance. Cytoplasm that included the male-sterility factor had no influence on resistance. Triploid hybrids, where the resistant parent is tetraploid, should be advantageous in the breeding of rhizoctonia-resistant hybrid varieties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041575
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    Paper (German National Licenses)
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