Advertisement

Major Phytonematodes Associated with Horticultural Crops and Their Diagnostic Keys

  • N. G. Ravichandra
Chapter

Abstract

Since phytonematodes are microscopic, morpho-anatomical characters have to be precisely observed and interpreted. Detailed studies on morpho-anatomical characters including their variability in several populations from many hosts and geographical regions provide the basis for creating new species. Major criteria considered to diagnose a particular species of a nematode include morphometric data, sex and sexual dimorphism, body size and shape, cuticle, cephalic region, stylet and esophagus, intestine, prerectum, rectum and anus, male and female reproductive system, tail, and juvenile characters (Siddiqi 2001). Biological characters, especially host preference, can be used in the identification of some plant-parasitic nematodes. However, the effects of physical, chemical, and biological factors on host–parasite relationships are often great. The presence or absence of males is also a differentiating character, but it is known that at least in some species, males may arise as a response to environmental stress.

Keywords

Lateral Field Nerve Ring Excretory Pore Scientific Classification Female Nematode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Baujard, P. (1989). Remarques sur les genres des sous-familles Bursaphelenchidae Paramanov, 1964 et Radinaphelenchinae Pramanov, 1964 (Nematoda: Aphelenchoididae). Revue de Nématologie, 12, 323–324.Google Scholar
  2. Dropkin, V. H. (1980). Introduction to plant nematology. New York: Wiley. 293 pp.Google Scholar
  3. Kiryanova, E. S., & Krall, E. L. (1980). Plant parasitic nematodes and their control (Vol. II, 748pp.). New Delhi/Bombay/Calcutta/New York: Amerind Publishing Co. Pvt.Ltd.Google Scholar
  4. Paracer, S. M. (1968). The biology and pathogenicity of the awl nematode, Dolichodorus heterocephalus. Nematologica, 13, 517–524.CrossRefGoogle Scholar
  5. Siddiqi, M. R. (2001). Tylenchida: Parasites of plants and insects (2nd ed., p. 328 pp). Farnham Royal: Commonwealth Agricultural Bureaux.Google Scholar
  6. Steinbuch, J. G. (1979). Der Naturferscher, 28, 237–259.Google Scholar
  7. Thorne, G. (1961). Principles of Nematology (553pp.). New York/Toronto/London: McGraw-Hill Book Co., Inc.Google Scholar
  8. Zuckerman, B. M., & Strich-Harari, D. (2002). The life stages of Helicotylenchus multicinctus (Cobb) in banana roots. Nematologica, 9, 347–353.CrossRefGoogle Scholar

Copyright information

© Springer India 2014

Authors and Affiliations

  • N. G. Ravichandra
    • 1
  1. 1.AICRP (Nematodes) Department of Plant PathologyUniversity of Agricultural SciencesBangaloreIndia

Personalised recommendations