ISHS Acta Horticulturae 56: Symposium on Juvenility in Woody Perennials
INVESTIGATIONS ON THE DEPENDENCE OF FLOWERING IN NORWAY SPRUCE (PICEA ABIES (L.) KARST) UPON AGE |
| Author: | H. Bleymüller |
| Abstract:
Three- and 16-year old plants of Norway spruce were treated with indoleacetic acid, gibberellic acid, kinetin, chlormequat and maleic hydrazide. In the 3-year-old plants, the treatment affected only the vegetative growth and in the 16-year-old plants, only the generative growth (female flowers were initiated when gibberellic acid + chlormequat and when kinetin + maleic hydrazide were applied). Because these substances are able to activate genetic material, it is suggested that in Norway spruce other genes or parts of chromosomes may be activated in the juvenile stage than in the beginning phase of maturity. | |
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