Abstract
Small seed pieces decreased yield and number of tubers. Both seed tuber and seed piece size affected the percentage of tubers with hollow heart. Hollow heart increased from 14 to 22% as the seed tuber size increased from 57 to 228 g and decreased from 27 to 19% as the seed piece size increased from 28 to 57 g. The least hollow heart (11%) occurred in tubers of plants grown from 57 g whole seed pieces and the most (26%) in tubers of plants grown from 228 g seed tubers cut into 28 g seed pieces. Hollow heart was positively correlated with the mean tuber size and negatively correlated with the number of mainstems per hill, total yield, and total number of tubers.
Resumen
Semilla cortada de pequeño tamaño disminuyó el rendimiento y número de tubérculos. Ambos tipos de tamaño de semilla, tubérculo entero y tubérculo fraccionado, tuvieron su efecto en el porcentaje de tubérculos con corazón vacío. Este defecto de tubérculo aumentó de 14 a 22% a medida que el tamaño de semilla entera se incrementó de 57 a 228 grs. y disminuyó de 27 a 19% a medida que la semilla cortada se incrementó de 28 a 57 grs. El menor porcentaje de corazón vacío (11%) ocurrió en tubérculos de plantas provenientes de semillas enteras de 57 grs. y el mayor porcentaje (26%) en tubérculos de plantas provenientes de tubérculos de 228 grs. que fueron cortados en fracciones de 28 grs. El corazón vacio expresó correlación positiva con el tamaño promedio de tubérculos y correlación negativa con el número de tallos principales por planta, rendimiento total y número total de tubérculos.
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Published with the approval of the Director of the North Dakota Agricultural Experiment Station as Journal Article No. 1141.
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Nelson, D.C., Thoreson, M.C. Effect of seed tuber and seed piece size on growth and incidence of hollow heart in Norgold Russet potatoes. American Potato Journal 59, 367–373 (1982). https://doi.org/10.1007/BF02875355
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DOI: https://doi.org/10.1007/BF02875355