Abstract
The Portage potato variety is high-yielding and early-maturing with attractive, round to oblong, white-skinned, white-fleshed tubers with medium-shallow eyes. Its major use is expected to be as an early tablestock variety in areas where Superior suffers yield reductions caused by verticillium wilt. Portage tubers do not show the net necrosis caused by potato leafroll virus, and are susceptible to skinning, but are fairly resistant to hollow heart, blackspot and shatter bruise. Portage is moderately resistant toVerticillium alboatrum, andRhizoctonia solani, but its seed-pieces are sensitive to dry soil conditions; therefore, cut seed should be suberized before planting. Symptoms of leafroll virus infection are difficult to recognize.
Compendio
La variedad Portage de papa es unavariedad precoz de alto rendimiento, con tubérculos atractivos, redondos a oblongos, de piel y carne blancas, y con ojos medianamente superficiales. Se espera que su principal utilización sea la de una variedad precoz de mesa en áreas donde Superior sufre reducciones de rendimiento causadas por el marchitamiento por Verticillium. Los tubérculos de Portage no muestran la necrosis en red causada por el virus del enrollamiento de la hoja de la papa, y son susceptibles a peladuras, pero son relativamente resistentes al corazón vacío, a la mancha negra y a serias magulladuras. Portage es moderadamente resistente a Verticillium albo-atrum, y a Rhizoctonia solani, pero sus tubérculos utilizados como semilla cortada son sensibles a condiciones de suelo seco; por lo tanto, la semilla cortada debe ser suberizada antes del sembrío. Los síntomas del virus del enrollamiento de la hoja son difíciles de reconocer.
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Reeves, A.F., Porter, G.A., Cunningham, C.E. et al. Portage: A new early-maturing, round white table potato variety. American Potato Journal 72, 681–688 (1995). https://doi.org/10.1007/BF02849177
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DOI: https://doi.org/10.1007/BF02849177