Journal of
Entomology and Nematology

  • Abbreviation: J. Entomol. Nematol.
  • Language: English
  • ISSN: 2006-9855
  • DOI: 10.5897/JEN
  • Start Year: 2009
  • Published Articles: 107

Full Length Research Paper

Reaction of sweet potato genotypes to sweet potato weevils (Cylas puncticollis (boheman) and Alcidodes dentipes (olivier), coleoptera: curculionidae) and viruses in Eastern Hararge, Oromiya, Ethiopia

Tarekegn Fite
  • Tarekegn Fite
  • Department of Plant Science, College of Agriculture and Veterinary Medicine, Jimma University, P. O. Box 307, Jimma, Ethiopia.
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Emana Getu
  • Emana Getu
  • Department of Zoological Sciences Addis, Faculty of Natural Science, Ababa University, P. O .Box 138, Addis Ababa, Ethiopia.
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Hirpa Legesse
  • Hirpa Legesse
  • Department of Plant Science, College of Agriculture and Natural Resource, Wollega University, P. O. Box 395, Nakamte, Ethiopia.
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Waktole Sori
  • Waktole Sori
  • Department of Plant Science, College of Agriculture and Veterinary Medicine, Jimma University, P. O. Box 307, Jimma, Ethiopia.
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  •  Received: 29 July 2017
  •  Accepted: 30 October 2017
  •  Published: 30 November 2017

Abstract

Nineteen sweet potato genotypes were screened for tolerance against sweet potato weevils and viruses at different locations of Eastern Hararge. Disease incidence and weevil population was assessed using standard procedures. Results of this study revealed that sweet potato weevils (SPW) and sweet potato virus diseases (SPVD) were present in studied area varied among sweet potato genotypes. Genotypes; Awassa-83, Bekale-A, Bekale-B, CN-1752-9, Cuba-2, Korojo, TIS-70357-5 and TIS-9465-2 had least load of SPW while, Bekale-A, TIS-8250-7 and TIS-9465-2 genotypes were free of virus diseases. Genotypes showing resistance to sweet potato can be used in varietal improvement program. The present studies concluded that the resistant sweet potato genotypes identified for SPW and SPVD could be utilized in integrated sweet potato production for the locations where the pests are major production bottleneck, like in Eastern Hararge.
 
Key words: Resistant, tolerance, Integrated pest management (IPM), sweet potato viruses, Oromiya, Hararge.