American Potato Journal

, Volume 72, Issue 10, pp 577–588 | Cite as

A promising method for screening drought tolerance in potato using apical cuttings

  • A. L. Demagante
  • P. M. Harris
  • P. Vander Zaag


Ten diverse potato genotypes from apical cuttings were screened for drought tolerance in raised beds of 3:1 v/v volcanic soil:burnt rice hull medium. The object was to test whether this method could replace field evaluation. Growth analyses were done periodically on potatoes from apical cuttings grown in beds. Correlations were made with those from seed tubers concurrently grown in the field. Total and tuber dry matter yield of plants grown from apical cuttings in beds and from seed tubers in the field were significantly correlated (r=.80*). Drought stress sensitivity based on % reduction in tuber and total dry matter at maturity in beds was similar to the results found in the field at maturity. Consistency of the method necessitates the standardization of the age, quality and source of apical cuttings and the growing conditions particularly drought stress imposition.

Additional Key Words

Drought stress evaluation growth analyses genotypic diversity 


Diez genotipos diferentes de papa, procedentes de esquejes de tallo fueron evaluados y seleccionados para tolerancia a la sequía en “camas” elevadas con un sustrato con 3:1 v/v suelo volcánicoxáscara seca de arroz. El objetivo fue probar hasta que punto este método podía reemplazar a la evaluación de campo. Se efectuaron, periódicamente, análisis del crecimiento de las papas creciendo en las “camas”. Se efectuaron correlaciones con las de tubérculos semilla que crecían simultáneamente en el campo. Los rendimientos en materia seca, total y del tubérculo, de plantas obtenidas de esquejes apicales en las “camas” y de tubérculos semilla del campo, estuvieron significativamente correlacionados (los valores de r variaron de 0.76* – 0.89*). La sensibilidad al estrés por sequía basada en el % de reducción en tubérculos y en materia seca total a la maduración en “camas” fue similar a los resultados encontrados a la maduracién en el campo. La consistencia del método necesita la estandarización de la edad, de la calidad y de la fuente de esquejes apicales, al igual que de las condiciones de crecimiento, en particular la imposicién del estrés al agua.


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Copyright information

© Springer 1995

Authors and Affiliations

  • A. L. Demagante
    • 1
  • P. M. Harris
    • 2
  • P. Vander Zaag
    • 1
  1. 1.International Potato CenterManilaPhilippines
  2. 2.Department of AgricultureUniversity of ReadingReadingUK

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