Advertisement

Indian Phytopathology

, Volume 71, Issue 2, pp 219–223 | Cite as

Perpetuation and host range of Oidium euonymi-japonici causing powdery mildew of Euonymus japonicus in Kashmir valley, India

  • Rayees A. Ahanger
  • Nissar Ahmad Qazi
  • Khurshid A. Hakeem
  • Hilal A. Bhat
RESEARCH ARTICLE

Abstract

The pathogen Oidium euonymi-japonici (anamorph) causing powdery mildew of Euonymus japonicus in Kashmir valley overwintered asexually as mycelium on intact infected twigs which started producing conidia in the 4th week of February and continued till ending October during both the years of study 2013 and 2014. The pathogen ceased to produce conidia from the 1st week of November to 3rd week of February, 2013–2014 and 2014–2015. On intact-overwintered infected twigs, maximum conidial production and viability was observed during 1st week of April and 1st week of August in both the years. However, no conidial formation was observed on the twigs, kept 10 cm deep in the soil. The cross inoculation study revealed that inoculum from Euonymus japonicus successfully infected all the other Euonymus genotypes tested but failed to infect the weeds and other test hosts and vice versa.

Keywords

Euonymus Oidium Mycelium Powdery mildew 

References

  1. Brand T (2009) Powdery mildew of succulent Euphorbia species. Euphorbia World 5:5–9Google Scholar
  2. Filajdec N, Sutton TB (1995) Overwintering of Alternaria mali, the causal agent of Alternaria blight of apple. Plant dis 79:695–698CrossRefGoogle Scholar
  3. Garbary DJ, Deveau E (2007) The Spindle Tree, Euonymus europaea L. (Celastraceae): a newly naturalized shrub in Nova-Scotia. Can F Res 121:85–88Google Scholar
  4. Saccardo PA (1903). Sylloge fungorum pp. 1–25. [cf: Venturella, G. 1991. A check list of Sicilian fungi. Bocconea 2 pp. 5–221]Google Scholar
  5. Salmon ES (1905) Cultural experiments with an Oidium on Euonymus japonicus Linn. Ann Mycol 3:1–15. http://www.cybertruffle.org.uk/cgi-bin/bibquery.pl?author=salmon
  6. Singh A, Banyal DK, Tyagi PD (2012) Host range and perpetuation of Erysiphe pisi, the causal agent of powdery mildew of pea. Indian Phytopath. 65(1):102–104Google Scholar
  7. Sinha P, Prajneshu, Varma A (2001) Studies on determining favourable factors for the germination of conidia of Oidium mangiferae. Indian Phytopath. 54(2):197–200Google Scholar
  8. Stephen NW (2010) Powdery mildew on landscape plants. University of Nebraska-Lincoln Extension Publications, Lincolan, pp 1–4. http://www.ianrpubs.unl.edu/live/g2021/build/g2021
  9. Timmerman AD (2010) Powdery mildew on landscape ornamentals, pp 1–4. NebGuide. University of Nebraska Lincoln. http://extension.unl.edu/publications
  10. Viennot-Bourgin (1965) C.r. hebd. Seanc. Acad. Sci., Paris 261: 4222–4223. (cf: The Powdery Mildews. 1978. (Ed. D.M. Spencer). Littlehampton, England)Google Scholar

Copyright information

© Indian Phytopathological Society 2018

Authors and Affiliations

  • Rayees A. Ahanger
    • 1
  • Nissar Ahmad Qazi
    • 1
  • Khurshid A. Hakeem
    • 1
  • Hilal A. Bhat
    • 1
  1. 1.Division of Plant PathologySher-e-Kashmir University of Agricultural Sciences and Technology-KashmirSrinagarIndia

Personalised recommendations