Assessment of resistance to scabies to scabies disease in some potato varieties

Ho Ngoc Anh, Pham Xuan Tung, Tran Anh Thong, Nguyen The Nhuan

SUMMARY

Thirty-three potato clones were evaluated for resistance to the common scab disease of potato caused by Streptomyces scabies by artificial inoculation under greenhouse conditions at Dalat. The isolate GTT4 of S. scabies was used for inoculum production and inoculation. Results obtained indicate that the potato clones differed significantly in the degree of infection expressed as % of tubers infected, % of tuber surface infected and average level of infection (0-5). On this basis, 12 clones were classified as intermediately resistant, 15 were intermediately susceptible and 6 susceptible. The intermediately resistant clones are recommended for use in breeding potato for common scab resistance.

Key words: Common scab of potato, potato, Streptomyces scabies, resistance.

From: Vietnam Journal of Agriculture & Rural Development

The Eleven year No. 224-2013, page 29-34

Author: Nguyen The Nhuan  Email: nhuanpvf2005@yahoo.com

Potato, Vegetable & Flower Reseach Center - Insititute of Agricultural Science for Southern Vietnam