HortScience · 1969 · 12 citations · 0 references
AgriculturePlant BiologyPlant SciencesPlant EcophysiologyPlant PhysiologyPomologyCold HardinessCold Stress PhysiologyFruit Crop PhysiologyFruit GrowthFruit PhysiologyGibberellic Acid TreatmentGibberellin EffectsRegulatorsSynthetic Plant Growth Regulators
Abstract Chemical regulation of cold hardiness is a fascinating objective for pomological research. In the past 5 years gibberellic acid (GA) and N-dimethylamino succinamic acid (Alar) have been reported to increase fruit bud hardiness of peaches (3, 4, 7). Trees treated with these two chemicals and 2-chloroethane phosphonic acid (Ethrel) were exposed to -11°F on December 30, 1968, permitting us to observe their effects on resistance of fruit buds to cold injury.