THE EFFECT OF ABSCISIC ACID AND GIBBERELLIC ACID ON THE COLD HARDINESS OF APPLE SEEDLINGS AND EXPLANTS

J. Pieniazek, T. Holubowicz
Apple explants in continuous illumination at 24°C cultured on basic medium for 18 days increased their frost resistance from -4.4° to -10. 0°C. This acclimatization was accelerated by ABA. GA cultured explants showed growth increases during the first 10 days and a rapid loss of frost resistance. A large increase in water soluble protein was found after ABA and GA treatments. Four-month-old seedlings doubled their frost resistance when exposed to 0°C for 5 days, but ABA and GA sprays were not effective. The increase in water soluble protein was not reflected in frost hardiness.
Pieniazek, J. and Holubowicz, T. (1973). THE EFFECT OF ABSCISIC ACID AND GIBBERELLIC ACID ON THE COLD HARDINESS OF APPLE SEEDLINGS AND EXPLANTS. Acta Hortic. 34, 247-250
DOI: 10.17660/ActaHortic.1973.34.34
https://doi.org/10.17660/ActaHortic.1973.34.34

Acta Horticulturae