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Sangre selection studies: I. Selection and comparative trials

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Abstract

Seventeen clonal selections of Sangre were made from a tuber-unit seed lot planted at the San Luis Valley Research Center in 1982. Seven selections had typical vine size and 10 had larger vine size than the standard cultivar. Progeny of each selection were increased and observed in 1983. During the three-year interval from 1984–1986 comparative performance trials were conducted.

All clones selected for larger vines were significantly taller and later maturing than the standard. Clones 10 and 11 also had significantly greater total yields and clones 10, 11, and 14 had significantly greater U.S. No. 1 yields. Tuber shape of these clones was comparable to the standard.

Results indicate that improvement may be made in the Sangre cultivar through clonal selection.

Compendio

Se efectuaron selecciones clonales de Sangre de un lote de semilla procesada como unidad de tubérculo, sembrado en el Centro de Investigación del Valle de San Luis, en 1982. Siete selecciones tuvieron un tamaño normal de mata y 10 de ellas tuvieron mayor tamaño que el cultivar estándar. La progenie de cada selección se incrementó y observó en 1983. Durante el intervalo de tres años—de 1984 a 1986 —se condujeron ensayos comparativos de performance.

Todos los clones seleccionados por matas de mayor tamaño fueron significativamente más altos y de maduración más tardía que el cultivar estándar. Los clones 10 y 11 tuvieron también rendimientos totales significativamente mayores y los clones 10, 11 y 14 tuvieron rendimientos de tubérculos U.S. No. 1 signifacativamente más altos. La forma de los tubérculos de estos clones fue comparable a la del cultivar estándar.

Los resultados indican que el mejoramiento del cultivar Sangre puede efectuarse mediante la selección clonal.

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Funding was provided by the Colorado Agricultural Experiment Station (Projects 429 and 109) and the San Luis Valley Potato Administrative Committee.

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Holm, D.G. Sangre selection studies: I. Selection and comparative trials. American Potato Journal 65, 21–26 (1988). https://doi.org/10.1007/BF02855311

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