Abstract
Economical and environmental conditions in the south of Italy suggest that the direct utilization of TPS, as propagation material for potatoes, could be worth exploring. Thus, it is important to identify the most appropriate breeding scheme to enhance productivity and uniformity of the progeny. For this purpose 44 TPS families deriving from different breeding schemes and emphasizing different levels of heterozygosity were tested for yield at two locations in the U.S.A. and one in Italy. The results indicate the superiority of the 4x progeny from 4x X 2x crosses as a family group, and in the frequency of high yielding individual families in all locations. The 4x X 2x family group outyielded the OP progeny group by 45%, 79% and 114% at Hancock, Rhinelander (U.S.A.) and in Italy, respectively.
Resumen
Las condiciones economicas y ambientales en el sur de Italia hacen pensar que la utilización directa de semilla botánica, como material de propagación de papas, podria ser beneficiosamente explorada. Por lo tanto, es importante identificar el proyecto de majoramiento más apropiado para aumentar la productividad y informidad de las progenies. Por esta razón, 44 familias de semilla botánica obtanidas de diferentes proyectosy que representaban diferentes nivelés de heterozigosis fueron probadas, para rendimiento, en dos localidades de los EE.UU., y en una de Italia. Los resultados indican la superioridad de la progenie 4x en los cruzamientos 4x X 2x, como familia, y en la frecuencia de familias individuales de alto rendimiento, en todas las localidades. El grupo de familia 4x X 2x sobrepasó los rendimientos del grupo de la progenie de polinización libre en 45%, 79%, y 114% en Hancook, Rhinelander (EE.UU.), y en Italia, respectivamente.
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Paper No. 2885 from the laboratory of Genetics. Research supported by College of Agriculture and Life Sciences; International Potato Center; USDA, CRGO 84-CRCR-1-1389; and Pan American Seed Co. L.C. Fellowship from E.R.S.O. Cesena, Italy.
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Concilio, L., Peloquin, S.J. Tuber yield of true potato seed families from different breeding schemes. American Potato Journal 64, 81–85 (1987). https://doi.org/10.1007/BF02853440
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DOI: https://doi.org/10.1007/BF02853440