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  • Polymer and Materials Science  (24)
  • 23.20.En
  • Oryza sativa L.
  • Vigna mungo
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Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Genetics of disease resistance in urdbean (Vigna mungo (L.) Hepper) to the leaf spots caused by Colletotrichum truncatum (Schw.) Andrus & Moore (1988)
    Springer
    Euphytica 37 (1988), S. 279-281 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Vigna mungo ; urdbean ; Colletotrichum truncatum ; leaf spotting ; inheritance of resistance ; non-allelic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary The resistance sources among various test cultivars of urdbean to Colletotrichum truncatum, a leaf spotting pathogen, were identified and genetics of resistance was worked out by studying F1, F2 and F3 generations of crosses between resistant cultivars and the susceptible cv. Kulu 4 and of those among the resistant parents. The resistance was found to be controlled by single dominant genes and the resistance genes were non-allelic.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00015124
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  • 2
    Digitale Medien
    Digitale Medien
    Interspecific hybridization between urdbean (Vigna mungo (L.) Hepper) and adzukibean (Vigna angularis (Willd.) Ohwi and Ohashi) (1988)
    Springer
    Euphytica 39 (1988), S. 53-57 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Vigna mungo ; urdbean ; Vigna angularis ; adzukibean ; interspecific hybridization ; immuno ; suppressants
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary To introduce resistance to fungal and viral diseases into urdbean (Vigna mungo), it was crossed with adzukibean (Vigna angularis) to achieve an interspecific hybrid between the two species by using different non-conventional breeding methods. Partial success was obtained with the use of UV irradiated pollen, intraspecific hybrids as parents and spray of immuno-suppressants on the female parent under glass house conditions and to the extent of callusing in aseptic culture.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00025111
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  • 3
    Digitale Medien
    Digitale Medien
    214Po: A γ-γ and γγ(θ) Coincidence study (1989)
    Springer
    The European physical journal 334 (1989), S. 33-45 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 23.20.Lv ; 23.20.En ; 23.20.Gg
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Extensive γ-γ coincidence measurements have been made on γ rays accompanying theβ − decay of214Bi using a conventional GeGe coincidence spectrometer. A total of 33 new γ transitions among levels of214Po have been established. Twenty-three previously reported but unplaced transitions have now been assigned in the level scheme. In addition to confirming 56 previously proposed levels, four new levels are established at 1015.05, 1712.98, 3003.5 and 3160.5 keV. Directional correlation measurements have been made on six weak cascades which have the first excited state in common. Mixing ratios have been deduced for the transitions concerned.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294385
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  • 4
    Digitale Medien
    Digitale Medien
    Pattern of dry-matter accumulation, and nitrogen concentration and uptake as influenced by levels and methods of nitrogen application in rainfed-upland rice (1979)
    Springer
    Plant and soil 52 (1979), S. 9-17 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Clay loam ; N accumulation ; Leaf area index ; N concentration ; N nutrition ; Oryza sativa L. ; Rainfed upland ; Sub-tropical ; Wet season
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Dry-matter accumulation, and concentration and uptake of nitrogen increased with increasing level of nitrogen at all the stages of crop growth. The differences in nitrogen concentration due to nitrogen levels were greatest at panicle initiation stage and started becoming narrower with the advancement in crop age. Split application of nitrogen with its heavier fractions at tillering and panicle initiation stages either through soil alone or soil+foliage (1/3+1/3+1/3) resulted in higher dry-matter accumulation, and higher nitrogen concentration and uptake than other methods. The crop, on an average, removed 61 kg N/ha. Plants accumulated nearly 15% of the total absorbed nitrogen, up to tillering, 50% up to panicle initiation and 85–90% up to heading. Proportionately lesser nitrogen uptake and dry-matter accumulation at post-heading stage is an indicative of a major constraint for production efficiency of rainfed-upland rice culture.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02197727
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  • 5
    Digitale Medien
    Digitale Medien
    Zinc-deficiency symptoms in lowland rice as induced by modified-urea materials applied at different rates of nitrogen in calcareous soil (1985)
    Springer
    Plant and soil 87 (1985), S. 439-440 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Calcareous soil ; Modified-urea materials ; Oryza sativa L. ; Rainfed lowland ; Zinc deficiency
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Studies revealed that Zn-deficiency symptoms were induced markedly by the levels of nitrogen and its source in rainfed lowland rice grown on calcareous soil. Visual Zn-deficiency symptoms recorded 3 weeks after transplanting showed that increased supply of nitrogen at puddling resulted in significant increase in the extent of deficiency symptoms of this nutrient element. Zn-deficiency symptoms got aggravated with Mussorrie Rock Phos-coated urea (MRPCU) followed by sulphur-coated urea (SCU). Zn-deficiency symptoms induced by urea supergranules (USG) and prilled urea (PU) supplying two-thirds of nitrogen as basal were found to be of moderate level. No symptoms of Zn-deficiency were noted with no-nitrogen control.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02181911
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  • 6
    Digitale Medien
    Digitale Medien
    Graft polymerization of methyl methacrylate onto silk fibers with Ce(VI)-sucrose redox system (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 28 (1983), S. 1811-1813 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1983.070280523
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  • 7
    Digitale Medien
    Digitale Medien
    Vanadium-cyclohexanone-initiated graft copolymerization of methyl methacrylate onto jute fibers (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 1763-1769 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Graft copolymerization of methyl methacrylate (MMA) was carried out on jute fibers using a V5+ -cyclohexanone redox initiator system. The effect of the concentration of acid, monomer, and V5+ on graft yield have been studied. In order to obtain optimum conditions of grafting, the effects of temperature, acid, reaction medium, solvent, and some inorganic salts on graft yield have been investigated. The most remarkable features of the investigation include the proposition of a mechanism and derivation of rate expression for the grafting process. More than 100% grafting could be achieved with the present system.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1986.070310621
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  • 8
    Digitale Medien
    Digitale Medien
    Redox-initiated graft copolymerization onto modified jute fibers (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 34 (1987), S. 1325-1327 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Zusätzliches Material: 1 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1987.070340336
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  • 9
    Digitale Medien
    Digitale Medien
    Kinetics of retarded polymerization: Investigation of the retardation of V5+-thiourea initiated polymerization of methyl acrylate by phenol (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 25 (1987), S. 2107-2116 
    Details
    ISSN: 0887-624X
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The kinetics and mechanism of the retarding action of phenol on the V5+-thiourea initiated polymerization of methyl acrylate (MA) have been studied within the temperature range of 30-50°C. The effects of retarder (phenol), metal ion (V5+), monomer (MA), sulfuric acid, some organic solvents and inorganic salts on the percentage and rate of polymerization have been studied. The remarkable observation of the present study is the positive intercept obtained from the plot of [M]/Rp vs. 1/[M]. This type of observation is significantly different from previous studies on retarded polymerization. The values of composite rate constants k0kt/kikpkK have been calculated from plots of [M]/Rp vs. 1/[M]. On the basis of experimental findings a reaction mechanism has been suggested, and a suitable rate expression has been proposed and explained.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pola.1987.080250807
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  • 10
    Digitale Medien
    Digitale Medien
    Studies on aqueous polymerization of acrylonitrile. Peroxodisulfate-thiourea redox system (1988)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 157 (1988), S. 79-91 
    Details
    ISSN: 0003-3146
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Beschreibung / Inhaltsverzeichnis: Die Kinetik der Polymerisation von Acrylnitril in wäßriger Lösung mit Peroxodi-sulfat-Thioharnstoff als Redoxinitiator wurde im Temperaturbereich von 40-50°C erforscht. Der Einfluß der Konzentration von Thioharnstoff, Monomeren und Peroxodisulfat auf die Polymerisationsgeschwindigkeit als such auf den Umsatz wurde untersucht. Auch die Auswirkungen einiger anorganischer Salze und verschiedener oraganischer Lösungsmittel auf die Polymerisationsgeschwindigkeit wurde studiert. Die Untersuchung des isolierten Polymeren erfolgte mittels IR-Spektroskopie. Ein ge-eignetes kinetisches Schema wurde vorgeschlagen und ein pasender Geschwindig-keitsaudruck abgeleitet.
    Notizen: An investigation on kinetics of aqueous polymerization of acrylonitrile (AN) initiated by peroxodisulfate-thiourea redox system has been carried out in the temperature range of 40° to 50°C. The concentration effect of thiourea, monomer, peroxodisulfate on polymerization rate and percentage of conversion has been studied. The effect of some inorganic salts and different organic solvents on polymerization rate has also been investigated. The isolated polymer has been characterized by IR spectra. A suitable kinetic scheme has been proposed and appropriate rate expressions have been derived and explained in the light of experimental findings.
    Zusätzliches Material: 7 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/apmc.1988.051570107
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