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  • Electronic Resource  (3)
  • 2000-2004  (1)
  • 1965-1969  (2)
  • Inorganic Chemistry  (2)
  • micropropagation  (1)
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  • Electronic Resource  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Phloroglucinol enhances growth and rate of axillary shoot proliferation in potato shoot tip cultures in vitro (2000)
    Springer
    Plant cell, tissue and organ culture 60 (2000), S. 139-149 
    Details
    ISSN: 1573-5044
    Keywords: 1 ; 3 ; 5-benzenetriol ; Dilospan S ; meristem culture ; micropropagation ; phenolic compound ; phloroglucinol ; Solanum tuberosum L. ; 1 ; 3 ; 5-trihydroxybenzene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Efficacy of phloroglucinol in promoting growth and development of in vitro-derived shoot tips was studied in six potato (Solanum tuberosum L.) genotypes. Different concentrations of phloroglucinol (0, 0.08, 0.4, 0.8, 1.2 and 1.6 mM) were tested in combination with either 0.1 or 0.2 M sucrose in shoot tip proliferation medium based on MS (Murashige and Skoog, 1962) medium supplemented with 5.8 μM GA3 (gibberellic acid), 1.1 μM BA (N6-benzyladenine) and 8.39 μM D-calcium pantothenate. Phloroglucinol fostered multiple shoot formation, promoted axillary shoot proliferation in terms of shoot tip fresh weight and shoot length, and stimulated root formation on the shoot tips. There was significant phloroglucinol × sucrose interaction for number of shoots developed per shoot tip, shoot tip fresh weight and number of roots induced per shoot tip. The beneficial effect of phloroglucinol on shoot tip survival was conspicuous only in genotypes that showed poor survival in the control proliferation medium. There were significant differences in response between the two sucrose levels with regard to shoot tip fresh weight and number of roots per shoot tip. Phloroglucinol in combination with 0.2 M sucrose induced maximum number of roots per shoot tip. Optimum shoot tip growth was fostered in medium containing 0.8 mM phloroglucinol and 0.2 M sucrose. High frequency multiple shoot formation in this medium ensures a faster rate of potato shoot tip multiplication within a limited time and space.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006419805980
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Organic compounds of niobium and tantalum. Reactions of niobium and tantalum pentaethoxides with glycols (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 351 (1967), S. 219-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neue Niob- und Tantalverbindungen der Typen (EtO)3M(glycol), (EtO)M(glycol)2 und M(glycol)3 wurden aus den Pentaäthoxiden und verschiedenen Glykolen (z. B. Butan-1.3-diol) hergestellt. Sofern in Benzol löslich, sind die Verbindungen darin dimer.
    Notes: Following three types of new compounds (EtO)3M(glycol), (EtO)M(glycol)2 and M(glycol)3 (where M is niobium or tantalum) were isolated by the reactions of niobium and tantalum pentaethoxides with various glycols (butane-1.3-diol, neopentyl glycol and hexane-1.6-diol). Molecular weights of the few soluble compounds show that they are dimeric in benzene.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673510312
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  • 3
    Electronic Resource
    Electronic Resource
    Organic derivatives of niobium and tantalum. Reactions of Niobium and Tantalum Pentaethoxides with catechol (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 353 (1967), S. 109-112 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Reaktion der Pentaähoxide von Niob und Tantal mit Brenzkatechin (B—H2) liefert die neuen Verbindungstypen (ÄtO)3M(B), (ÄtO)M(B)2 und M(B)3. Die Mono- und Dibrenzkatechin-Derivate tauschen ihre Äthoxygruppen mit t-Butanol unter Bildung der entsprechenden t-Butoxy-Verbindungen aus.
    Notes: Reactions of niobium and tantalum pentathoxides with catechol have been studied in different stoichiometric ratios and the following three types of new derivatives, (EtO)3M (Catechol); (EtO)M(Catechol)2 and M(Catechol)3 (M = Nb; Ta) have been isolated. The mono- and di-catechol derivatives interchange their ethoxide groups with tertiary butanol yielding the corresponding tertiary butoxide derivatives.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673530115
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