Abstract
After lifting in a nursery, 3-year-old seedlings ofAbies nordmanniana were treated for improvement in new leader growth after transplanting. The treatments were: (A) whorl (subapical) buds, lateral buds at the stem and whorl branch tips removed; (B) as (A), but with whorl branches removed at their junction to the stem; and (C) untreated control seedlings. After transplanting in April, plant samples were lifted in June, July and September to determine the effect of treatments on root and shoot development. Root length and number of root tips were determined by scanning and computed image analysis. Height, dry weight of shoot and root and ratio between these were determined. Removal of whorl and lateral buds and whorl branch tips had a negative effect on root and shoot growth after transplanting. Root length, number of root tips and shoot dry weight were reduced, but by September equaled the untreated control seedlings. Removal of whorl branches caused a significant reduction in both root length and shoot dry weight compared to untreated control seedlings. root length / root:shoot / root tip scanning
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