Summary
Regression of yield on seed tuber size in first clonal generation populations was studied in two experiments. Regression coefficients were +0.39 and +0.26 pounds of tubers per quarter inch increment of seed tuber diameter in one experiment and +0.88 in the other experiment. Regression coefficients within and among clones were similar. It is suggested that stratification and/or co-variance analysis might be used to obtain greater precision in evaluation when seed tuber size varies. Improvement in C1 evaluation appears possible by increasing seed tuber size.
Resumen
Regresión de rendimiento del tamaño de tubérculos de semilla en poblaciones de la primera generación clonal ha sido estudiada en dos experimentos. Los coeficientes de regresión fueron +0.39 y +0.26 libras de tubérculos por un incremento de un cuarto de pulgada en diámetro de tubérculos de semilla en un experimento y de +0.88 en el otro experimento. Los coeficientes de regresión en los clones y entre clones fueron similares. Se sugiere qe el análisis de estratificación y co-variación o de co-variación unicamente puede usarse para obtener una precisión mayor de evaluación cuando el tamaño de tubérculos varía. Mejoramiento de evaluación de C1 parece posible por medio de incremento del tamaño de tubérculos.
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Literature Cited
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Paper number 5928 of the Scientific Journal Series of the Minnesota Agricultural Experiment Station, Institute of Agriculture, University of Minnesota, St. Paul, Minnesota 55101.
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Mullin, R., Blomquist, A.W. & Lauer, F.I. Effect of seed tuber size on first clonal generation yield of potatoes. American Potato Journal 43, 418–423 (1966). https://doi.org/10.1007/BF02869567
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DOI: https://doi.org/10.1007/BF02869567