• Addicott, F. T. (1982). Abscission. University of California Press, Berkeley .
  • Berta, G., Fusconi, A. & Trotta, A. & Scannerni, S. (1990). Morphogenetic modifications induced by the mycorrhizal fungus Glomus strain E3 in the root system of Allium porrum L. New Phytologist 114, 207215.
  • Boke, N. H. (1979). Root glochids and root spurs of Opuntia arenaria (Cactaceae). American Journal of Botany 66 (9), 10851092.
  • Cahn, M. D., Zobel, R. W. & Bouldin, D. R. (1989). Relationship between root elongation rate and diameter and duration of growth of lateral roots of maize. Plant and Soil 119, 271279.
  • Dell, B. & Wallace, I. M. (1981). Surface root system of Eucalyptus marginata Sm.: anatomy of non-mycorrhizal roots. Australian Journal of Botany 29, 565577.
  • Fusseder, A. (1987). The longevity and activity of the primary root of maize. Plant and Soil 101, 257265.
  • Gunning, B. E. S., Hughes, J. E. & Hardham, A. R. (1978). Formative and proliferateve cell divisions, cell differentiation, and developmental changes in the meristem of Azolla roots. Planta 143, 121144.
  • Harley, J. L. & Smith, S. E. (1983). Mycorrhizal Symbiosis. Academic Press, London .
  • Hoppe, D., McCully, M. E. & Wenzel, C. L. (1986). The nodal roots of Zea: Their development in relation to structural features of the stem. Canadian Journal of Botany 64, 25242537.
  • Kraus, M. Fusseder, A. & Beck, E. (1987). Development and replenishment of the P-depletion zone around the primary root of maize during the vegetation period. Plant and Soil 101, 247255.
  • Maertens, C. (1971). Etude experimentale de l'alimentation minérale et hydrique du Mai's. Capacite d'absorption des parties basales et apicales de racines de Zea Mai's. Comptes rendus hebdomadaire des seances de l'Academic des Sciences (Paris) 273, 730732.
  • Maumene, C. (1988). L'état sanitaire des racines. Perspectives Agricoles, 122, 3438.
  • McArthur, I. C. S. & Steeves, T. A. (1969). On the occurrence of root thorns on a Central American palm. Canadian Journal of Botany 47, 13771382.
  • McCully, M. E. (1975). The development of lateral roots. In: The Development and Function of Roots, Third Cabot Symposium. (Ed. by J. G.Torrey & D. T.Clarkson), pp, 178193, Academic Press, London .
  • McCully, M. E. (1987). Selected aspects of the structure and development of field-grown roots with special reference to maixe. In. Root Development and Function. (Ed. by P. J.Gregory, J. V.Lake & D. A.Rose), pp, 5370, Cambridge University Press, Cambridge .
  • McCully, M. E. & Canny, M. J. (1988). Pathways and processes of water and nutrient movement in roots. Plant and Soil 111, 159170.
  • O'Brien, T. P. & McCully, M. E. (1981). The Study of Plant Structure: Principles and Selected Methods. Termarcarphi Pty Ltd., Melbourne Australia .
  • Raju, M. V. S., Steeves, T. A. & Naylok, J. M. (1964). Developmental studies on Euphorbia esula L.: apices of long and short roots. Canadian Journal of Batony 42, 16151628.
  • Seago, J. L. & Marsh, L. C. (1990). Origin and development of lateral roots in Tvpha glauca. American Journal of Botany 77, 713721.
  • Steeves, T. A. & Sussex, I. M. (1989). Patterns in Plant Development, 2nd edn., Cambridge University Press, Cambridge .
  • Tippett, J. T. (1982). Shedding of ephemeral roots in gymnosperms. Canadian Journal of Botany 60, 12952302.
  • Torrey, J. G. & Callaham, M. D. (1978). Determinate development of nodule roots in actinomycete-induced root nodules of Myrica gale. Canadian Journal of Botany 56, 13571364.
  • Varney, G. T., Canny, M. J., McCully, M. E. & Wang, X. L. (1991). The branch roots of Zea. I. First order branches, their number, sizes and division into classes. Annals of Botany 67, 357364.
  • Vartanian, N. (1981). Some aspects of structural and functional modifications induced by drought in root systems. Plant and Soil 63, 8392.
  • Wang, X.-D. & Canny, M. J. (1985). A technique for revealing tissue embedded with resin blocks. Journal of Microscopy 138, 9597.