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  • Molybdenum  (2)
  • Bean anthracnose  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Genetic and physiological variation among bean lines resistant and susceptible to bean anthracnose (1982)
    Springer
    Theoretical and applied genetics 62 (1982), S. 355-359 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Disease resistance ; Bean anthracnose ; Genetic, physiological variation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Electrophoresis was used to determine genetic and or biochemical variation, if any, among bean lines resistant and susceptible to anthracnose. This was based on two enzyme systems: peroxisase and esterase. It was revealed that resistant and suceptible plants differed in their band patterns and intensities. Band intensity differences occurred mainly among monomorphic bands with higher intensities expressed by susceptible plants, while band pattern differences were expressed both by resistant and susceptible plants. These differences appeared only at certain stages of development. These stages were identified as 3 and 40 days after emergence and were considered as critical stages for screening purposes. The peroxidase isozyme A5 and the esterase isozyme C1 at 3 days, and the peroxidase band C1 and esterase bands A1 and A2 at 40 days were important because these differences could be used as ‘genetic/biochemical’ markers for screening the population for resistance. Thus, electrophoretic differences could be used as a screening aid and this could save time and effort in breeding programmes. Comparisons between inoculated and non-inoculated leaves of resistant and susceptible lines indicated that infection induced changes in both the amount and kind of peroxidases even before symptoms of the disease appeared. However, there were no specific differences between resistant and susceptible lines, indicating that resistant and susceptible lines responded to infection in the same manner.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00275103
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  • 2
    Digitale Medien
    Digitale Medien
    Influence of sulphur on the yield and concentration of copper, manganese, iron and molybdenum in berseem (Trifolium alexandrinum) grown on two different soils (1980)
    Springer
    Plant and soil 56 (1980), S. 229-234 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Berseem yield ; Copper ; Iron ; Manganese ; Molybdenum ; Concentrations ; Sulphur effect
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract A screen-house experiment with 0, 25, 50 and 75 ppm S was conducted to study the effect of S on the yield and, Mn, Cu, Fe and Mo concentrations of berseem (Trifolium alexandrinum) at three stages of growth in a normal and reclaimed soil. Higher levels of S decreased the yield in both the soils. Yield in normal soil was much higher than in reclaimed soil. Application of S increased Cu, Mn, and Fe concentrations in all cuts in both soils. Molybdenum concentration was lowered following S application in both the soils in all the cuts. Molybdenum content increased with the stage of plant growth.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02205851
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  • 3
    Digitale Medien
    Digitale Medien
    Effect of Cu and Mo on Cu/Mo ratio and their concentration in different organs of cowpeas (Vigna sinensis L.) (1980)
    Springer
    Plant and soil 56 (1980), S. 235-241 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Cowpeas ; Copper ; Cu/Mo ratio ; Molybdenum
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract In a Typic Torripsamments (loamy sand) soil, 4 levels each of Cu and Mo,viz, 0, 5, 10 and 20; and 0, 0.5, 1.0 and 2.0 ppm, respectively, were added to study Cu−Mo relationship in cowpeas in a screen-house. Application of Mo reduced Cu content andvice versa in leaves, stems and roots of cowpeas. Stems accumulated more of Mo and Cu than leaves and roots, showing thereby, that it might be the site of interaction for Mo and Cu. Molybdenum increased to a toxic level in plant (for animals) following its application. Cu/Mo ratio was narrowed with Mo and widened with Cu addition. It was either more than 2∶1 or less which suggested that Mo would cause Cu deficiency and Cu in the absence of Mo would be toxic to ruminants.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02205852
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