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  • Articles  (2)
  • Chemotaxis  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 15 (1989), S. 1297-1309 
    ISSN: 1573-1561
    Keywords: Chemotaxis ; bioassay ; nematodes ; Meloidogyne incognita ; attractants ; repellents ; cucumber roots ; gradients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A simple, flexible, and quantifiable bioassay for the attraction or repulsion of plant parasitic nematodes to or from root fractions or pure substances is described. Accurate gradients of volatile and nonvolatile substances can be measured and established. The method entails placing the nematodes in narrow agarose tracks such that their movement is essentially linear and the distance a population has traveled away or toward a given substance can be monitored with time. Plastic plates, each containing 10 such tracks, are described. The method is illustrated with second-stage larvae ofMeloidogyne incognita and a volatile attractant and nonvolatile repellent fraction obtained from cucumber roots.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 16 (1990), S. 1199-1205 
    ISSN: 1573-1561
    Keywords: Chemotaxis ; repellents ; Meloidogyne incognita ; root knot nematode ; inorganic ions ; salts ; gradients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Simple inorganic salts of the ions K+, NH 4 + , Cs+, NO 3 − , and Cl− are strongly repellent to infective second-stage larvae of the root knot nematode,Meloidogyne incognita. Some of these salts are known to be beneficial to plant growth. The results suggest a new means of plant protection.
    Type of Medium: Electronic Resource
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