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  • Articles  (4)
  • Beta vulgaris  (2)
  • wheat  (2)
  • 42.75
  • Atomic and molecular processes in external fields, including interactions with strong fields and short pulses
  • Chemistry
  • Column liquid chromatography
  • Computational Chemistry and Molecular Modeling
  • 1990-1994  (4)
  • 1970-1974
  • 1920-1924
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (4)
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  • Articles  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 45 (1990), S. 71-80 
    ISSN: 1573-5060
    Keywords: wheat ; Triticum aestivum ; wheat leaf rust ; Puccinia recondita f.sp. tritici ; partial resistance ; histology ; growth curve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The average size of wheat leaf rust colonies, measured using epifluorescence microscopy was significantly larger in the highly susceptible genotype Morocco than in the susceptible genotype Kaspar and the partially resistant genotypes Westphal 12A, Akabozu and BH 1146. This was already so three days after inoculation. Colony growth in partially resistant genotypes was continuously retarded compared to colonies in the highly susceptible genotype Morocco. No evidence was found for an initial inhibition of the growth of colonies in partially resistant genotypes. In partially resistant genotypes formation of uredial beds and sporulating areas started at a smaller colony size than in susceptible genotypes. Wheat leaf rust colonies in primary leaves of all genotypes studied were much larger than colonies in flag leaves measured at the same number of days after inoculation. Growth and sporulation of not intertwined colonies was not influenced by either a high or a low number of neighbouring colonies.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 45 (1990), S. 81-86 
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Puccinia recondita f.sp. tritici ; wheat leaf rust ; partial resistance ; histology ; abortion ; adult plant resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Arrest of the growth of wheat leaf rust infection structures was studied with fluorescence microscopy in seedling leaves and flag leaves of the susceptible spring wheat genotypes Morocco and Kaspar and the partially resistant genotypes Westphal 12A and Akabozu. The percentages non-penetrants and substomatal vesicle abortion were low in all genotypes. In the partially resistant genotypes the percentage abortion of infection structures was higher than in the susceptible genotype Morocco. Aborted infection structures had formed one or two haustorial mother cells. In adult plants differences in the percentage aborted infection structures between susceptible and partially resistant genotypes were more pronounced than in seedlings. The so-called late abortion was not observed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-5060
    Keywords: Beta vulgaris ; Beta patellaris ; Agrobacterium rhizogenes ; beet cyst nematode ; Heterodera schachtii ; nematode resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Hairy roots, induced by Agrobacterium rhizogenes, were obtained of nematode susceptible beet plants (Beta vulgaris) and of the nematode resistant alien monotelosomic addition AN5, carrying a telosome from B. patellaris. The additional telosome was found to be stably present in vitro in the roots of AN5. The hairy root cultures were inoculated with larvae of the beet cyst nematode Heterodera schachtii. On the root culture of AN5 significantly less cysts developed than on the other root cultures. These results indicate that the resistance to the beet cyst nematode is expressed in the roots after transformation and can be monitored under in vitro conditions.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-5060
    Keywords: breeding ; Beta vulgaris ; sugar beet ; natural variation ; wild Beta species ; disease resistances
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Sugar beet is a relatively young crop, which supposedly has a narrow genetic base. Natural variation occurring in primitive beet varieties and in wild Beta species has been used for breeding sugar beet. This paper reviews information on desirable characteristics in Beta germplasm and the attempts made for the introgression of such characters into commercial breeding material. After an introduction on the availability of germplasm and the possibilities of hybridisation, attention is focussed on the mating system (especially male sterility), on morphological and physiological characteristics, including yield and sugar content, and on resistances to diseases and pests.
    Type of Medium: Electronic Resource
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