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  • (Z)-3,7-dimethyl-2,7-octadien-1-yl propanoate  (1)
  • Brassica oleracea  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 5 (1979), S. 891-900 
    ISSN: 1573-1561
    Keywords: sex pheromone ; San Jose scale ; Quadraspidiotus perniciosus ; Diaspididae ; (Z)-3,7-dimethyl-2,7-octadien-1-yl propanoate ; 3-methylene-7-methyl-7-octen-1-yl propanoate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The sex pheromone of the San Jose scale,Quadraspidiotus perniciosus (Comstock), was isolated from airborne collections on Porapak Q. Two components, present in approximately equal amounts, were identified as (Z)-3,7-dimethyl-2,7-octadien-1-yl propanoate and 3-methylene-7-methyl-7-octen-1-yl propanoate. Greenhouse bioassays and field tests have shown that the compounds are independently attractive to male San Jose scale. These structures are compared with those of other known scale pheromones.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5060
    Keywords: Brassica oleracea ; broccoli ; cauliflower ; cabbage ; hybrids ; self-incompatibility ; seed purity ; isozymes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Isozyme phenotypes at four known genetic loci were determined in parental inbreds and corresponding F1 hybrid seed lots of four commercial broccoli, two cauliflower, and two cabbage varieties to determine seed purity. Most inbred lines were completely homozygous at all four loci but differed with respect to alleles at one to three loci. Several parental inbreds of the cabbage hybrids were segregating at two to three of the loci. Models were developed to estimate seed purity in cases where parents were either fixed or segregating at diagnostic loci. Estimates of contamination ranged from 1.5 to 40.1%. These estimates were comparable with those from commercial grow-outs with a tendency for the former estimates to be higher. It was concluded that more stable SI alleles or genetic male sterility should be used to reduce contamination. Electrophoretic variation was further discussed as a tool for selecting homozygous plants and for strong self-incompatibility.
    Type of Medium: Electronic Resource
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