American Potato Journal

, Volume 72, Issue 3, pp 177–183 | Cite as

Daminozide applied to the foliage of three potato cultivars increased tuber eye number

  • Loretta J. Mikitzel


The plant growth regulator, daminozide, was applied to the foliage of Ranger Russet, Shepody and Nooksack potato (Solarium tuberosum L.) plants at 0, 0.62, 1.25, 2.5 and 5 g product·liter−1 to determine its effectiveness in increasing eye number and reducing average tuber weight. Total tuber yields were not affected. Daminozide treatment increased tuber eye number of each cultivar and did not alter the distribution of eyes between the stem and bud ends. After 5 g daminozide·liter−1 treatment, average eye number of the stem end and bud ends of Nooksack increased up to 1.0 eye, by 27% for Shepody and by 31% for Ranger Russet. The largest increases in eye number occurred in Ranger Russet. However, increasing daminozide concentration caused increased tuber elongation in Ranger Russet. Average tuber weight decreased significantly in response to daminozide treatment only in Shepody. As a seed tuber production aid, daminozide can be used to increase eye number, and in some cultivars, to reduce average tuber weight.

Additional KeyWords

Alar Solarium tuberosum 


Daminozide, regulador del crecimiento de las plantas, fue aplicado al follaje de los cultivares de papa (Solanum tuberosum L.) Ranger Russet, Shepody y Nooksack a razón de 0, 0.62, 1.25, 2.5 y 5 g del producto/litro, para determinar su efectividad en incrementar el número de ojos y reducir el peso promedio del tubérculo. Los rendimientos totales en tubérculos no fueron afectados. El tratamiento con daminozide incrementó el número de ojos de cada cultivar y no alteró su distribución entre los extremos basal y apical. Después del tratamiento con 5 g de daminozide por litro, el número promedio de ojos de los extremos basal y apical de Nooksack se incrementó hasta 1.0 ojo, alrededor de 27% para Shepody y 31% para Ranger Russet. Los mayores incrementos en número de ojos ocurrieron en Ranger Russet. Sin embargo, el incremento en la concentración de daminozide incrementó el alargamiento de los tubérculos en Ranger Russet. Solamente en Shepody disminuyó significativamente el peso promedio de los tubérculos en respuesta al tratamiento con daminozide. Como una ayuda a la producción de tubérculos-semillas, el daminozide puede ser utilizado para incrementar el número de ojos, y en algunos cultivares, para reducir el peso promedio del tubérculo.


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Copyright information

© Springer 1995

Authors and Affiliations

  • Loretta J. Mikitzel
    • 1
  1. 1.Dept. of Horticulture and Landscape ArchitectureWashington State UniversityPullman

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