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  • Blackwell Publishing Ltd  (2)
  • 1995-1999  (2)
Publikationsart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Plants regenerated from cell suspension cultures of palmarosa grass, Cymbopogon martinii (Roxb.) Wats, were analysed for somaclonal variation in five clonal generations. A wide range of variation in important quantitative traits, e.g. plant yield, height, tiller number, oil content and qualitative changes in essential oil constituents—geraniol, geranyl acetate, geranyl formate and linalool—were observed among the 120 somaclones screened. Eight somaclones were selected on the basis of high herb and oil yield over the donor line and high geraniol content in the oil. Based on performance in the field trials, three superior lines were selected, and maintained for five clonal generations. The superior lines exhibited a reasonable degree of stability in the traits selected.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 25 (1998), S. 0 
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. Polyriboinosinic-polyribocytidylic acid (Poly I:Poly C), an interferon inducer was studied for its effect on gastric ulceration in rats. Polyriboinosinic-polyribocytidylic acid (1,2 and 4 mg/kg, i.m.) showed a dose-dependent inhibition of gastric ulcers induced by aspirin, cold restraint stress and pylorus ligation (Shay's model). Protective dose (PD50)±SEM values of Poly I:Poly C on these models of ulcers were 1.9±0.2, 2.3±0.4 and 2.8±0.4 (mg/kg, i.m.) respectively.2. Polyriboinosinic-polyribocytidylic acid (10-60 μg) produced dose-dependent inhibition of gastric proton pump (H+/K+-ATPase) activity in the gastric parietal microsomal fraction. The concentration of Poly I:Poly C causing a 50% inhibition (IC50)±SEM was found to be 17.6±1.2 μg.3. Polyriboinosinic-polyribocytidylic acid caused a significant decrease in free and total acid and pepsin and an increase in mucin content in Shay (pylorus-ligated) rat.4. Polyriboinosinic-polyribocytidylic acid did not exert a significant influence on isolated tissue preparations for anticholinergic (acetylcholine-induced contraction of guinea-pig ileum) and H2-anti-histaminic (histamine-induced contraction of rat uterus and guinea-pig auricle) activities.5. Thus, the present study indicates that Poly I:Poly C may possess anti-gastric ulcer activity as a result of inhibition of the gastric proton pump.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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