Branching Dynamics in Young Scots Pine

1989

S. 233-241

6 Abb., 37 Lit. Ang.

Unselbständiges Werk

200040699

The development of shoot number and shoot properties was examined in successive shoot cohorts of young widely-spaced Scots pine trees (Pinus sylvestris L.) growing in a progeny trial. This was accomplished by reconstructing the branching process of the trees over a period of five years, from tree age 4 to 8. During this time the number of shoots in successive shoot cohorts increased rapidly, while at the same time the mean shoot length decreased. The decrease in shoot lengths from older to younger shoots was accompanied by a decline in the bifurcatoin frequency of the shoots. In general, rapid changes occurred in the branching characteristics during the early development of the trees. The variaton in the branching characteristics was reflected in the development of the architecture and biomass production of the trees.