• BRADBEER, J.W. & PINFIELD, N.J. (1967). Studies in seed dormancy. III. The effects of gibberellin on dormant seeds of Corylus avellana L. New Phytol, 66, 515.
  • HUNT, R. & PARSONS, I.T. (1974). A computer program for deriving growth-functions in plant growth-analysis. J. appl. Ecol, 11, 297.
  • JARVIS, B.C., FRANKLAND, B. & CHERRY, J.H. (1968). Increased nucleic-acid synthesis in relation to the breaking of dormancy of hazel seed by gibberellic acid. Planta, Berl, 83, 257.
  • JARVIS, B.C. (1975). The role of seed parts in the induction of dormancy of hazel (Corylus avellana L.). New Phytol, 75, 491.
  • KAUFMAN, P.B., GHOSHEH, N.S., LACROIX, J.D., SONI, S.L. & IKUMA, H. (1973). Regulation of invertase levels in Avena stem segments by gibberellic acid, sucrose, glucose and fructose. Pl. Physiol., Lancaster, 52, 221.
  • PINFIELD, N.J. & STOBART, A.K. (1969). Gibberellin-stimulated nucleic acid metabolism in the cotyledons and embryonic axes of Corylus avellana (L.) seeds. New Phytol, 68, 993.
  • ROSS, J.D. & BRADBEER, J.W. (1968). Concentrations of gibberellin in chilled hazel seeds. Nature (Lond.), 220, 85.
  • ROSS, J.D. & BRADBEER, J.W. (1971). Studies in seed dormancy. V. The content of endogenous gibberellins in seeds of Corylus avellana L. Planta, Berl, 100, 288.
  • STOBART, A.K. & PINFIELD, N.J. (1970). Glycerol utilization in seeds of Corylus avellana (L.). New Phytol, 69, 939.
  • TUKEY, N.B. (1938). Growth patterns of plants developed from immature embryos in artificial culture. Bot. Gaz., 99, 630.