Advertisement

Plant Aging pp 373-376 | Cite as

Partial “Rejuvenation” of 20-Year-Old Sitka Spruce by Lower Crown Pruning

  • C. Selby
  • R. Lee
  • B. M. R. Harvey
Part of the NATO ASI Series book series (NSSA, volume 186)

Abstract

Once trees have attained an age at which elite individuals can reliably be selected they are usually too old to be vegetatively propagated successfully, because of problems related to plant aging (Bonga, 1987). Close proximity to a root system or to the tree base has frequently been associated with the maintenance of juvenility. For example, hedging (Libby and Hood, 1976) or serial propagation of cuttings (St. Clair, Kleinschmit and Svolba, 1985) has been used to retain juvenile rooting potential, whilst pruning (Copes, 1983) or production of stump sprouts (Boulay, 1979) has been used to improve the rooting potential or cultural properties of tissues.

Keywords

Growth Habit Stem Cutting Mother Tree Rooted Cutting Plant Maturation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bonga, J.M., 1987, Clonal propagation of mature trees: Problems and possible solutions, in: “Cell and Tissue Culture in Forestry, Volume 1, General Principles and Biotechnology,” J.M. Bonga and D.J. Durzan eds., Martinus Nijhoff, Dordrecht, pp 249–271.Google Scholar
  2. Boulay, M., 1979, Multiplication et clonage rapide du Sequoia sempervirens par la culture in vitro. Ann. AFOCEL, 12: 49–55.Google Scholar
  3. Copes, D.L., 1983, Effects of annual crown pruning and serial propagation on rooting of stem cuttings from Douglas-fir. Can. J. For. Res., 13: 419–424.CrossRefGoogle Scholar
  4. Kennedy, S.J. and Selby, C., 1984, Propagation of Sitka spruce by stem cuttings. Rec. Agric. Res. (Dept. Agric. N. Ireland), 32: 61–70.Google Scholar
  5. Libby, W.J. and Hood, J.V., 1976, Juvenility in hedged radiata pine. Acta Hortic, 56: 91–98.Google Scholar
  6. Selby, C., 1988, Micropropagation of Sitka spruce [Picea sitchensis (Bong.) Carr.]. Ph.D. Thesis, The Queen’s University of Belfast, UK.Google Scholar
  7. Selby, C. and Harvey, B.M.R., 1985, The influence of natural and in vitro bud flushing on adventitious bud production in Sitka spruce [Picea sitchensis (Bong.) Carr.] bud and needle cultures. New Phytol., 100: 549–562.CrossRefGoogle Scholar
  8. St. Clair, J.B. Kleinschmit, J. and Svolba, J., 1985, Juvenility and serial vegetative propagation of Norway spruce clones (Picea abies Karst.). Silvae Genet., 34: 42–48.Google Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • C. Selby
    • 1
  • R. Lee
    • 1
  • B. M. R. Harvey
    • 1
  1. 1.Agricultural Botany Research DivisionDepartment of Agriculture for Northern IrelandNewforge Lane, BelfastUK

Personalised recommendations