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  • 1990-1994  (3)
  • 1993  (3)
  • 27.70.+q  (1)
  • F. solani  (1)
  • Field performance  (1)
  • 1
    ISSN: 1573-0832
    Keywords: Fusarium oxysporum ; F. equiseti ; F. solani ; F. moniliforme ; F. compactum ; F. nygamai ; F. chlamydosporum ; Millet ; Plant debris ; Soil ; Sorghum ; Southern Africa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Samples from soils planted to millet and sorghum from Lesotho, Nigeria, and Zimbabwe were processed and a total of 3,291Fusarium cultures were recovered. Of these 1,296 cultures were isolated from plant debris and 1,995 cultures were recovered from soil dilutions. The most prevalent species recovered wereF. oxysporum (37%),F. equiset (30%),F. solani (14%),F. moniliforme (6%),F. compactum (5%),F. nygamai (4%), andF. chlamydosporum (2%). OtherFusarium species isolated wereF. merismoides, F. polyphialidicum, F. graminearum, F. subglutinans, F. sambucinum, F. longipes, F. semitectum, F. dimerum, F. lateritium, and a group of cultures designated as population A which resembleF. camptoceras. Fusarium equiseti was the predominant species in soil samples from Nigeria and Zimbabwe, whileF. oxysporum was the predominant species recovered from soil from Lesotho.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 86 (1993), S. 875-879 
    ISSN: 1432-2242
    Keywords: Transgenic plants ; Nicotiana tabacum ; Field performance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two inbred cultivars of Nicotiana tabacum (tobacco), ‘Samsun’ and ‘Xanthi’, were transformed with the plasmid pBI 121 using Bin 19 in Agrobacterium tumefaciens. The plasmid carries the nptII gene conferring kanamycin resistance and the uidA gene encoding β-glucuronidase (GUS). Progeny carrying the genes in the homozygous condition were identified and selfed over several generations. One line homozygous for the introduced genes and one untransformed control from each cultivar were then selected and crossed reciprocally to give four families per cultivar. Seeds from each family were grown in a replicated field trial and all plants scored for a range of morphological and agronomic characters. In addition, leaf samples were taken and GUS activity measured. In the ‘Samsun’ material, which contained one copy of the introduced gene at a single locus and showed high levels of GUS expression, the transformed homozygote showed twice the level of GUS activity as the hemizygotes, wheareas in the ‘Xanthi’ line, which had a lower level of GUS, the hemizygotes showed the same level of GUS activity as the transformed homozygote. The agronomic data showed differences between the families, but the source of such differences could not be ascribed unambiguously. The results are discussed in the light of related information on gene expression and field performance from other transgenic material.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 23.20.Lv ; 27.70.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The yrast bands of155Gd and157Dy have been observed to high spins (I∼25–40). The systematic properties of the N=91 isotones with particular reference to the second i13/2 neutron and first h11/2 proton alignments are discussed.
    Type of Medium: Electronic Resource
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