Abstract
Potato (Solabum tuberosum L.) vine and tuber yield trials were conducted to identify clones that would produce large yields of vines and tubers at the same harvest date. PSDT 17 (a parallel spindle derived tetraploid) was the best yielding clone for all years when yield trials were performed. It produced 951 and 940 quintal/ha of tubers, and 35.5 and 42.6 quintal/ha of dry vines 135 days after planting in 1976 and 95 days after planting in 1977, respectively. PSDT 41 and Kennebec were very high vine and tuber yielding clones, but did not perform consistently across years. Yields for vines and tubers were larger in 1977 than in 1976 or, as previously reported, in 1975. Total economic returns were greatest for later harvests, since the tuber harvest provided most of the return.
Resumen
Se llevó a cabo ensayos con el objeto de identificar clones capaces de producir altos rendimientos de papa (Solanum tuberosum L.) y follaje simultáneamente al momento de la cosecha. El clon PSDT 17 (Tetraploide 4x–2x, derivado de un cruce que produce gametos 2n por poliploidización unilateral) produjo los más altos rendimientos durante los años en que se efectuaron las pruebas. Produjo 951 y 940 quintales/ha de tubérculos y 35.5 y 42.6 quintales/ha de follaje seco, 135 dias después de la siembra durante 1976 y después de 95 días desde la siembra en 1977, respectivamente. PSDT 41 y Kennebec alcanzaron altos rendimientos en follaje y tubérculos, esos clones, sin embargo, no rindieron consisentemente a través de los años. Los rendimientos de follaje y tubérculos fueron majores en 1977 que en 1976 o los reportados anteriormente para 1975. El rendimiento económico total fue major para las cosechas tardías ya que los tubérculos produjeron la mayor parte del ingreso.
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Literature Cited
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Research supported by the College of Agricultural and Life Sciences, University of Wiscosnin, grants from the National Science Foundation (PCM 77-24330) and the International Potato Center, and a gift from Frito-Lay, Inc.
Former graduate student and Professor, Departments of Horticulture and Genetics, University of Wisconsin, Madison, WI93706.
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Parfitt, D.E., Peloquin, S.J. Yield trials and economic analyses to select cultivars for salvage for silage production. American Potato Journal 59, 395–401 (1982). https://doi.org/10.1007/BF02875358
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DOI: https://doi.org/10.1007/BF02875358