Abstract
It is often assumed that the inbreeding status of progenies influences artificial selection. A study of the influence of the inbreeding coefficient of potato genotypes on the selection intensity in a potato cultivar development program was conducted. The inbreeding coefficient for the genotypes of 105 crosses investigated ranged from 0 to 0.11 and averaged 0.022. No significant relationship was found between the inbreeding coefficient and the proportion of genotypes saved at the single-hill, four-hill, ten-hill and hundred-hill stage of selection. The inbreeding coefficient was of little use in predictinga priori the selection pattern of a cross in a multitrait type of breeding program.
Compendio
Se asume con frecuencia que la condición de endocría de las progenies influencia la selección artificial. Se condujo un estudio de la influencia del coeficiente de endocría de genotipos de papa sobre la intensidad de selección en un programa de desarrollo de cultivares de papa. El coeficiente de endocría para los genotipos de 105 cruzamientos investigados varió de 0 a 0,11 y promedió 0,022. No se encontró una relación significativa entre el coeficiente de endocrío y la produción de genotipos retenidos durante las etapas de selección con una, cuatro, diez y cien matas. El coeficiente de endocría fue de escaso valor para predicira priori el modelo de selección de unb cruzamiento en un programa de mejoramiento del tipo de características múñtiples.
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Loiselle, F., Tai, G.C.C., Christie, B.R. et al. Relationship between inbreeding coefficient and clonal selection in a potato cultivar development program. American Potato Journal 66, 747–753 (1989). https://doi.org/10.1007/BF02896831
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DOI: https://doi.org/10.1007/BF02896831