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  • 1
    Electronic Resource
    Electronic Resource
    Effects of ethylene on tuberization in radish (Raphanus sativus) (1989)
    Springer
    Plant growth regulation 8 (1989), S. 21-30 
    Details
    ISSN: 1573-5087
    Keywords: Ethylene ; gibberellin ; hypocotyl elongation ; Raphanus sativus ; tuber formation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effects of ethylene on the elongation of radish hypocotyls and on dry matter partitioning between tubers and shoots were analysed in order to gain insight into the possible role of ethylene in the regulation of tuberization. Treatment of very young seedlings with ethylene results in heavier tubers (Vreugdenhil et al. 1984). Here we report that addition of ethylene or ethephon two days after germination inhibited the elongation of the hypocotyl; trapping of endogenously produced ethylene had a stimulative effect on elongation. Ethephon, sprayed at a later stage, changed the partitioning of assimilates between tubers and shoots, resulting in lower tuber weights. It is concluded that ethylene had a dual effect on tuberization in radish: at a very early stage of development it inhibited elongation of the hypocotyl, resulting in earlier tuber formation and heavier tubers. At a later stage, it had a negative effect on tuber weight by changing dry matter partitioning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040913
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of ethylene on the tuberization of potato (Solanum tuberosum) cuttings (1989)
    Springer
    Plant growth regulation 8 (1989), S. 31-39 
    Details
    ISSN: 1573-5087
    Keywords: Ethylene ; Solanum tuberosum ; stolon elongation ; tuber formation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Ethylene, applied as ethephon, inhibited the elongation of etiolated, axillary potato shoots cultured in vitro and it stimulated radial growth along the whole length of these shoots. The same phenomena were observed when ACC, the precursor of ethylene, was added to the medium, whereas silver ions reversed these effects. However, tuber formation in vitro was suppressed by ethephon. This indicates a dual role of ethylene in the induction of tuber formation in potatoes: it had a positive effect by blocking the elongation of stolons and it suppressed tuber initiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040914
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    Paper (German National Licenses)
    Fulltext
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