Abstract
The effect of cutting the tap root on shoot growth and development of lateral roots was observed in seedling Quercus robur L. growing in PVC tubes containing peat and perlite. Cutting the tap root had little effect on shoot height and leaf number although some treatments caused a significant but slight reduction in shoot dry weight and number of branches. Total root dry weight was similar in control and treated plants but distributed differently between the types of root present. The tap root always formed the largest part of the total root dry weight. In control plants most lateral root dry weight was in roots < 1 mm diameter whereas in treated plants most dry weight was in roots > 1 mm diameter. Development of the root system following root cutting was similar for all treatments: new long laterals > 1 mm diameter with relatively few branches, that formed replacement tap roots, developed near the cut end of the original tap root. Fine laterals (< 1 mm diameter) near the root collar continued to grow forming highly branched systems.
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References
Aldhous, J. R. 1972. Nursery Practice. Forestry Commission Bulletin 43, HMSO 184 pp.
Arnold, M. A. and Struve, D. K. 1989. Green ash establishment following transplant. J. Amer. Soc. Hort. Sci. 114: 591–595.
Belgrand, M., Dreyer, E., Joannes, H., Velter, C. and Scuiller, I. 1987. A semi-automated data processing system for root growth analysis: application to a growing oak seedling. Tree Physiology, 3: 393–404.
Champagnat, M., Baba, J. and Delaunay, M. 1974. Corrélations entre le pivot et ses ramifications dans le système racinaire de jeunes Chênes cultivés sous un brouillard nutritif. Revue Cytol. Biol. vég. 37: 407–418.
Dušek, V. 1967. Application of the root-undercutting method in tending transplants. Comm. Inst. For. Csl. 5: 123–140.
El Nour, M. and Riedacker, A. 1984. Rythmes de croissance et de régénération de racines de plants et bouture de chênes pedonculés (Quercus pedunculata Ehrh.). Ann. Sci. For. 41: 355–370.
Farmer, R. E. 1975. Dormancy and root regeneration of northern red oak. Can. J. For. Res. 5: 176–185.
Geisler, D. and Ferree, D.C. 1984. Response of plants to root pruning. Horticultural Reviews, 6: 155–188.
Harmer, R. 1990. Relation of shoot growth phases in seedling oak to development of the tap root, lateral roots and fine root tips. New Phytol. 115: 23–27.
Head, G. C. 1967. Effects of seasonal changes in shoot growth on the amount of unsuberized root on apple and plum trees. J. Hort. Sci. 42: 169–180.
Insley, H. and Buckley, G. P. 1985. The influence of desiccation and root pruning on the survival and growth of broadleaved seedlings. J. Hort. Sci. 60: 377–387.
Johnson, P. S., Novinger, S. L. and Mares, W. G. 1984. Root, shoot and leaf area growth potentials of northern red oak planting stock. For. Sci. 30: 1017–1026.
Larson, M. M. 1970. Root regeneration and early growth of red oak seedlings: Influence of soil temperature. For. Sci. 16: 442–446.
Reich, P. B., Teskey, R. O., Johnson, P. S. and Hinckley, T. M. 1980. Periodic root and shoot growth in oak. For. Sci. 16: 590–598.
Riedacker, A., Dexheimer, J., Tavakol, R. and Alaoui, H. 1982. Modifications expérimentales de la morphogénèse et des géotropismes dans le système racinaire de jeunes chênes. Can. Jour. Bot. 60: 765–778.
Reidacker, A. and Poda, U. 1977. Les systèmes racinaires de jeunes plants de Hêtre et de Chêne 1. Modification de leur morphogénèse par décapitation d'extrémitiés de racines et conséquences pratiques. Ann. Sci. For. 34: 111–135.
Röhrig, E. 1977. Wurzelschnitt an Eichensamlingen. Forstarchiv, 48: 25–28.
Rook, D. A. 1971. Effects of undercutting and wrenching on growth of Pinus radiata D. Don seedlings. J. App. Ecol. 8: 477–490.
Struve, D. K. 1990. Root regeneration in transplanted deciduous nursery stock. Hortscience, 25: 266–270.
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Harmer, R., Walder, K.E. The growth of shoots and lateral roots of Quercus robur L. seedlings following simulated undercutting. New Forest 8, 351–362 (1994). https://doi.org/10.1007/BF00036734
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DOI: https://doi.org/10.1007/BF00036734