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  • Inorganic Chemistry  (2)
  • Moricandia arvensis  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Chloroplast substitution overcomes leaf chlorosis in a Moricandia arvensis-based cytoplasmic male sterile Brassica juncea (1998)
    Springer
    Theoretical and applied genetics 97 (1998), S. 1179-1182 
    Details
    ISSN: 1432-2242
    Keywords: Key words Brassica juncea ; Moricandia arvensis ; Cytoplasmic male sterility ; Chlorosis correction ; Cytoplasmic hybrids ; Chloroplast substitution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A male sterile Brassica juncea line based on Moricandia arvensis cytoplasm was developed previously by backcrossing the somatic hybrid M. arvensis+B. juncea, and the gene for restoring fertility was introgressed. The CMS line is very severely chlorotic because of the presence of alien chloroplasts and flowering is delayed by 30–40 days, making it unsuitable for the exploitation of heterosis. We have resorted to another cycle of protoplast fusion between green fertile B. juncea and chlorotic male sterile B. juncea, and developed green male-sterile plants. Molecular analysis revealed that in green male-sterile plants chloroplasts of M. arvensis origin were substituted by those from B. juncea, giving rise to intergeneric cytoplasmic hybrids with mitochondria of M. arvensis origin. With the development of dark-green male-sterile plants, the CMS fertility restoration system is suitable for the production of hybrid mustard.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051007
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  • 2
    Electronic Resource
    Electronic Resource
    A Moricandia arvensis– based cytoplasmic male sterility and fertility restoration system in Brassica juncea (1998)
    Springer
    Theoretical and applied genetics 97 (1998), S. 488-492 
    Details
    ISSN: 1432-2242
    Keywords: Key words Cytoplasmic male sterility ; Fertility restoration ; Moricandia arvensis ; Brassica juncea ; Protoplast fusion ; Somatic hybrids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  A cytoplasmic male-sterility system has been developed in mustard (Brassica juncea) following repeated backcrossings of the somatic hybrid Moricandia arvensis (2n=28, MM)+B. juncea (2n=36, AABB), carrying mitochondria and chloroplasts from M. arvensis, to Brassica juncea. Cytoplasmic male-sterile (CMS) plants are similar to normal B. juncea; however, the leaves exhibit severe chlorosis resulting in delayed flowering. Flowers are normal with slender, non-dehiscent anthers and excellent nectaries. CMS plants show regular meiosis with pollen degeneration occurring during microsporogenesis. Female fertility was normal. Genetic information for fertility restoration was introgressed following the development of a M. arvensis monosomic addition line on CMS B. juncea. The additional chromosome paired allosyndetically with one of the B. juncea bivalents and allowed introgression. The putative restorer plant also exhibited severe chlorosis similar to CMS plants but possessed 89% and 73% pollen and seed fertility, respectively, which subsequently increased to 96% and 87% in the selfed progeny. The progeny of the cross of CMS line with the restorer line MJR-15, segregated into 1 fertile : 1 sterile. The CMS (Moricandia) B. juncea, the restorer (MJR-15), and fertility restored F1 plants possess similar cytoplasmic organellar genomes as revealed by ‘Southern’ analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050921
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    Paper (German National Licenses)
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  • 3
    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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    Paper (German National Licenses)
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  • 4
    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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    Paper (German National Licenses)
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