Proceedings: Plant Sciences

, Volume 99, Issue 5, pp 445–451 | Cite as

Splash dispersal inColletotrichum graminicola (Ces.) Wilson, the causal organism of anthracnose of sorghum

  • A H Rajasab
  • A Ramalingam


The conidia ofColletotrichum graminicola (Ces.) Wilson were dispersed only by rain drops. The dispersal was related to the frequency of rainfall. Under field conditions, conidia were dispersed vertically up to a height of 0·75 m and laterally up to a distance of 1 m from the source. Both incident water drops and flowing water liberated conidia from the sporulating lesions. Peak liberation of conidia occurred with the water drops 3–11, and most conidia were removed from the sporulating lesions within 60 s, suggesting dispersal of the pathogen even during small showers of rain.


Colletotrichum graminicola sorghum anthracnose epidemiology splash dispersal aerobiology 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bertrand P F and English H 1976 Release and dispersal of conidia and ascospores ofValsa leucostoma;Phytopathology 66 987–991CrossRefGoogle Scholar
  2. Gregory P H 1973The microbiology of the atmosphere 2nd edition (London: Leonard Hill)Google Scholar
  3. Gregory P H, Guthrie E J and Bunce M E 1959 Experiments on splash dispersal of fungus spores;J. Gen. Microbiol. 20 328–354PubMedGoogle Scholar
  4. Hirst J M 1952 An automatic volumetric spore trap;Ann. Appl. Biol. 39 257–265CrossRefGoogle Scholar
  5. Hunter R S and Kunimoto R K 1974 Dispersal ofPhytophthora palmivora sporangia by wind-blown rain;Phytopathology 64 202–206Google Scholar
  6. Mathur R S 1951 Function of spore matrix inColletotrichum lindemuthianum;Indian Phytopathol. 4 152–155Google Scholar
  7. Perkins W A 1957 The rotorod sampler;2nd semiannual report Aerosol Lab, Dept. Chemistry and Chemical Eng., Stanford Univ., CML186 p 66Google Scholar
  8. Rajasab A H and Ramalingam A 1989 Splash dispersal inRamulispora sorghi Olive and Lefebreve, the causal organism of sooty stripe of sorghum;Proc. Indian Acad. Sci. (Plant Sci.) 99 335–341Google Scholar
  9. Ramalingam A 1968 The construction and use of a simple air sampler for routine aerobiological surveys;Environ. Health 10 61–67Google Scholar
  10. Stepanov K M 1935 Dissemination of infective disease of plants by air currents;Bull. Plant Prot. Lenings. Ser. 2, Phytopathology 8 1–68Google Scholar
  11. Tuite J 1969Plant pathological methods. Fungi and bacteria (Minnesota: Burgess)Google Scholar
  12. Waller J M 1972 Water borne dispersal in coffee berry disease and it’s relation to control;Ann Appl. Biol. 71 1–18CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 1989

Authors and Affiliations

  • A H Rajasab
    • 1
  • A Ramalingam
    • 1
  1. 1.Department of P G Studies and Research in BotanyUniversity of MysoreManasa GangotriIndia

Personalised recommendations