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  • 1995-1999  (3)
  • 1965-1969  (3)
  • 1
    Electronic Resource
    Electronic Resource
    N-unsymmetrisch substituierte Borazinderivate, 1. Mitt. (1965)
    Springer
    Monatshefte für Chemie 96 (1965), S. 1209-1213 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract N-unsymmetrically substituted borazines were prepared by reacting a mixture of ammonium chloride and methylammonium chloride with BCl3. The 2,4,6-chloroborazine derivatives have been alkylated and separated. 2,4,6-Trimethylborazine and 2,4,6,4′6′-pentamethylbiborazinyl-1,2′ were obtained by Grignardmethylation of 2,4,6-chloroborazine, and IR assignements were made.
    Notes: Zusammenfassung Die Darstellung von N-unsymmetrisch substituierten Borazinderivaten durch Umsetzung eines Gemisches von Ammoniumchlorid und Methylammoniumchlorid mit BCl3 wird beschrieben. Die entstehenden 2,4,6-Trichlorborazinderivate werden in 2,4,6-Alkylborazine übergeführt und diese getrennt. Eine der Nebenreaktionen wird durch die Umsetzung von 2,4,6-Trichlorborazin mit CH3MgBr, wobei 2,4,6-Trimethylborazin und 2,4,6,4′6′-Pentamethylbiborazinyl-1,2′ erhalten wurden, untersucht. IR-Zuordnungen für die beiden letztgenannten Verbindungen werden gegeben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00904269
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Flavomycoin, ein neues antifungales Polyenantibiotikum (1968)
    Springer
    Cellular and molecular life sciences 24 (1968), S. 11-12 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A new antifungal polyene antibiotic flavomycoine is described. By structural investigations it was shown that this antibiotic belongs to a new type of polyene antibiotics in which the pentaene chromophore is conjugated to the lactone carbonyl group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02136760
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Role of rye chromosomes in improvement of zinc efficiency in wheat and triticale (1997)
    Springer
    Plant and soil 196 (1997), S. 249-253 
    Details
    ISSN: 1573-5036
    Keywords: addition lines ; rye ; triticale ; wheat ; zinc deficiency ; zinc genetic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Using the disomic wheat-rye addition lines (Triticum aestivum L., cv. Holdfast-Secale cereale L., cv. King-II) and an octoploid triticale line (xTriticosecale Wittmark L. "PlutoxFakon") as well as the respective wheat and rye parents, greenhouse experiments were carried out to study the role of rye chromosomes on the severity of Zn deficiency symptoms, shoot dry matter production, Zn efficiency, shoot Zn concentration and Zn content. Plants were grown in a Zn-deficient calcareous soil with (10 mg Zn kg-1 soil) and without Zn supply. Zinc efficiency was calculated as the ratio of dry weight produced under Zn deficiency to the dry weight produced under Zn fertilization. In the experiments with addition lines, visual Zn deficiency symptoms were slight in the rye cultivar King-II, but were severe in the wheat cultivar Holdfast. The addition of rye chromosomes, particularly 1R, 2R and 7R, into Holdfast reduced the severity of deficiency symptoms. Holdfast showed higher decreases in shoot dry matter production by Zn deficiency and thus had a low Zn efficiency (53 %), while King-II was less affected by Zn deficiency and had a higher Zn efficiency (89 %). With the exception of the 3R line, all addition lines had higher Zn efficiency than their wheat parent: the 1R line had the highest Zn efficiency (80 %). In the experiment with the triticale cultivar and its parents, rye cv. Pluto and wheat cv. Fakon, Zn deficiency symptoms were absent in Pluto, slight in triticale and very severe in Fakon. Zinc efficiency was 88 % for Pluto, 73 % for triticale and 64% for Fakon. Such differences in Zn efficiency were better related to the total amount of Zn per shoot than to the amount of Zn per unit dry weight of shoot. Only in the rye cultivars, Zn efficiency was closely related with Zn concentration. Triticale was more similar to rye than wheat regarding Zn concentration and Zn accumulation per shoot under both Zn-deficient and Zn-sufficient conditions. The results presented in this study show that rye has an exceptionally high Zn efficiency, and the rye chromosomes, particularly 1R and 7R carry the genes controlling Zn efficiency. To our knowledge, the result with triticale and its rye parents is the first report showing that the genes controlling Zn efficiency in rye are transferable into wheat and can be used for development of new wheat varieties with high Zn efficiency for severely Zn-deficient conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004210309876
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Screening for zinc efficiency among wheat relatives and their utilisation for alien gene transfer (1998)
    Springer
    Euphytica 100 (1998), S. 281-286 
    Details
    ISSN: 1573-5060
    Keywords: zinc efficiency ; zinc deficiency ; alien chromosome transfer ; cereals ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Genetic diversity for micronutrient efficiency among the most highly adapted and advanced hexaploid and tetraploid wheat cultivars in the world is limited compared with alien species of wheat or rye. Therefore, screening for zinc efficiency was conducted in greenhouse experiments under controlled conditions, and in field trials. Different varieties of hexaploid wheat, hexaploid oats and diploid rye, together with hexaploid and octoploid triticales, wheat-Agropyron, wheat-Aegilops and several wheat-alien chromosome addition series were studied. Considerable differences in zinc efficiency were found between wheat and its relatives. Individual chromosomes of Secale, Agropyron and Haynaldia were found to carry major genes for this character. The transfer of alien chromosome segments was effective, demonstrated using several wheat-rye translocation lines. Alien genetic information was clearly expressed in the wheat genetic background. Further experimental introgressions by chromosome manipulation and marker-aided selection may efficiently contribute to wheat improvement in marginal soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018376827876
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  • 5
    Electronic Resource
    Electronic Resource
    Genes, marker and linkage data of rye (Secale cereale L.): 5th updated inventory (1998)
    Springer
    Euphytica 101 (1998), S. 23-67 
    Details
    ISSN: 1573-5060
    Keywords: gene map ; linkage data ; rye
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018351008889
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Natriumbestimmung mit α-Methoxy-2-naphthylessigsäure (1965)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 213 (1965), S. 401-404 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird eine Vorschrift angegeben zur Darstellung der α-Methoxy-2-naphthylessigsäure aus 2-Methylnaphthalin. Die dargestellte Säure ist auf ihre analytische Verwendbarkeit zur Alkalimetallbestimmung geprÜft worden. Die Versuche zeigen, daß eine spezifische quantitative Natriumbestimmung in Anwesenheit aller anderen Alkalimetallionen ohne Schwierigkeiten möglich ist. Die Fehlergrenze liegt bei ±1%.
    Notes: Summary α-Methoxy-2-naphthyl-acetic acid has been examined for its applicability to the determination of alkali metals and its preparation from 2-methylnaphthalene has been described. It has been shown that the determination of sodium can be performed in presence of all other alkali metals without any difficulties by means of this reagent. The limit of error is ±1%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00513590
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