Resistance of potato to powdery scab (Spongospora subterranea) under andean field conditions

  title={Resistance of potato to powdery scab (Spongospora subterranea) under andean field conditions},
  author={Hebert Torres and Maria Andre{\'i}na Pacheco and E. R. French},
  journal={American Potato Journal},
Six field trials were carried out in naturally infested soil to identify resistance to powdery scab. Trials were conducted at Anta, Cusco, in southern Peru (3300 m altitude) during six seasons. A scale of 1 (0%) to 9 (>95%) of tuber surface showing infection was used to evaluate resistance. Ratings 1–3 were considered resistant (R), 4 moderately resistant (R) and 5 or more, susceptible (S). Among 467 tested potato accessions (cultivars and advanced clones) of the potato germplasm collection… CONTINUE READING


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