Potato Research

, Volume 38, Issue 2, pp 171–178 | Cite as

Field resistance to late blight of four indian potato cultivars

  • B. P. Singh
  • S. K. Bhattacharyya


The nature and extent of field resistance to late blight, and the effect of plant age and inoculum level on resistance components and host attributes, were studied on the Indian potato cultivars Kufri Chandramukhi, Kufri Jyoti, Kufri Badshah and Kufri Sherpa. Latent period, infection efficiency, colonization rate and sporulation were found to operate in cvs Kufri Jyoti, and Kufri Badshah. Based on component analysis cv. Kufri Jyoti was similar to or sometimes more resistant than Kufri Badshah. No correlation was observed between any of the host attributes and resistance to late blight, except that the erect canopy of Kufri Badshah was associated with its slow blighting rate. At high inoculum, colonization rate and total sporulation were increased but infection efficiency was decreased.

Additional keywords

zoospore Phytophthora infestans resistance components area under disease progress curve Solanum tuberosum L. 


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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • B. P. Singh
    • 1
  • S. K. Bhattacharyya
    • 1
  1. 1.Division of Plant PathologyCentral Potato Research InstituteShimlaIndia

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