Abstract
The St. Johns potato variety is high-yielding and late-maturing with attractive, round to oblong, white-skinned, white-fleshed tubers with mediumshallow eyes. Its major use is expected to be as a maincrop tablestock variety. Taste panels rated St. Johns better than or equal to Katahdin in texture, color, mealiness, and flavor. St. Johns tubers do not show the net necrosis caused by potato leafroll virus, and are resistant to golden nematode, corky ringspot, hollow heart, and blackspot bruising. St. Johns is also moderately resistant to greening, shatter bruise, verticillium wilt, early blight, common scab, the common race of late blight, leafroll,Fusarium sambucinum (dry rot) andErwinia carotovora (soft rot), although some breakdown has been reported in commercial storages. Symptoms of leafroll virus infection are somewhat difficult to detect.
Compendio
La variedad de papa St. Johns tiene alto rendimiento y madurez tardia, y sus tubérculos son atractivos, redondos a oblongos, de piel y pulpa blancas y ojos semiprofundos. Se anticipa su uso principalmente como una variedad importante para el consumo. Los paneles de catadores calificaron a St. Johns mejor o igual que la variedad Katahdin en cuanto a textura, color, contenido de harina y sabor. Los tubérculos de la variedad St. Johns no muestran la necrosis reticular que causa el virus del enrollamiento de la hoja de la papa y son resistentes al nematodo dorado, mancha anillada, corazón vacío y mancha negra no infecciosa. También es moderadamente resistente al verdeamiento, golpes, marchitez porVerticillium, tizón temprano, sarna común, la raza común del tizón tardío, enrollamiento de la hoja, pudrición seca (Fusarium sambucinum) y pudrición blanda (Erwinia carotovora), aunque hay algunos informes de descomposición durante el almacenamiento con fines comerciales. Los síntomas de infección por el virus del enrollamiento de la hoja son un poco difíciles de detectar.
Similar content being viewed by others
Literature Cited
Christ, B.J. and D.M. Petrunak. 1992. Evaluation of Potato Cultivars and Clones for Resistance to Powdery Scab. Am Potato J 69:574. Abs.
Morrow, L.S., G.A. Porter, J.A. Sisson, E.S. Plissey, T.R. Tarn, M.J. Wannamaker, R. Coffin, H. De Jong, M.R. Henninger, J.B. Sieczka, D.D. Moyer, D.E. Halseth, BJ. Christ, M.A. Bennett, R.H. Cole, S.B. Sterrett, R.J. Young, E. Kee, and W.J. Arsenault. 1991. Performance Evaluations of Potato Clones and Varieties in the Northeastern States-1990. Maine Agricultural Experiment Station Miscellaneous Publication 711.
Morrow, L.S., G.A. Porter, J.A. Sisson, E.S. Plissey, T.R. Tarn, M.J. Wannamaker, H. De Jong, M.R. Henninger, J.B. Sieczka, E. Kee, D.E. Halseth, B.J. Christ, M.A. Bennett, R.H. Cole, S.B. Sterrett, R.J. Young, R. Coffin, and W.J. Arsenault. 1992. Performance Evaluations of Potato Clones and Varieties in the Northeastern States 1991. Maine Agricultural Experiment Station Miscellaneous Publication 717.
Morrow, L.S., G.A. Porter, J.A. Sisson, E.S. Plissey, T.R. Tarn, M.J. Wannamaker, H. De Jong, M.R. Henninger, J.B. Sieczka, E. Kee, D.E. Halseth, B.J. Christ, M.A. Bennett, S.B. Sterrett, R.J. Young, P. Boswall, and W.J. Arsenault. 1993. Performance Evaluations of Potato Clones and Varieties in the Northeastern States-1992. Maine Agricultural Experiment Station Miscellaneous Publication 718.
Morrow, L.S., G.A. Porter, J.A. Sisson, E.S. Plissey, T.R. Tarn, R. Schiavone, H. Dejong, M.R. Henninger, J.B. Sieczka, E. Kee, D.E. Halseth, BJ. Christ, R. Hassell, S.B. Sterrett, R.J. Young, P. Boswall, W.J. Arsenault, and T. Simpson. 1994. Performance Evaluations of Potato Clones and Varieties in the Northeastern States-1993. Maine Agricultural Experiment Station Miscellaneous Publication 723.
Porter, G.A., J.A. Sisson, E.S. Plissey, L.S. Morrow, T.R. Tarn, H. De Jong, M.R. Henninger, J.B. Sieczka, D.D. Moyer, D.E. Halseth, M.A. Bennett, R.H. Cole, S.B. Sterrett, and R.J. Young. 1990. Performance Evaluations of Potato Clones and Varieties in the Northeastern States-1989. Maine Agricultural Experiment Station Miscellaneous Publication 708.
Reeves, A.F. 1988. Varietal differences in potato tuber greening. Am Potato J. 65:651–658.
Weingartner, D.P., R.W. Goth, J.R. Shumaker, and Jill Meldrum. 1992. Incidence and Severity of Corky Ringspot Disease in 20 Cultivars and 4 Potato Clones in Nematicide Treated and Untreated Soil. Am Potato J 69:614–615. Abs.
Author information
Authors and Affiliations
Additional information
Maine Agricultural and Forest Experiment Station Publication Number 1964.
Deceased
Rights and permissions
About this article
Cite this article
Reeves, A.F., Porter, G.A., Manzer, F.E. et al. St. Johns: A round white potato variety for fresh market. American Potato Journal 73, 89–98 (1996). https://doi.org/10.1007/BF02854763
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02854763