• Baker, F. S. (1950). Principles of Silviculture. McGraw-Hill, New York .
  • Bertsch, A. & Domes, W. (1969). CO2-Gaswechsel amphistomatischer Blätter. 3. Das untcrschicdlichc Zeitverhalten der Stomata beider Blattseiten in Abhangigkeit von der vorausgegengenen Dunkelzeit. Planta, 89, 47.
  • Brun, W. A. (1962). Rhythmic stomatal opening responses in banana leaves. Physiologia Pl., 15, 623.
  • Ehrler, W. L. & Van Bavel, C. H. M. (1968). Leaf diffusion resistance, illuminance and transpiration. Pl., Physiol., Lancaster, 43, 208.
  • Gaastra, P. (1959). Photosynthesis of crop plants as influenced by light, carbon dioxide, temperature, and stomatal diffusion resistance. Meded. Landb Hoogesch. Wageningen, 59(13).
  • Gregory, F. G. & Puarse, H. L. (1937). The effects on the behaviour of stomata of alternating periods of light and darkness of short duration. Ann. Bot. N.S., I, 3.
  • Grime, J. P. (1965). Shade tolerance in flowering plants. Nature, Loud., 208, 161.
  • Holmgren, P., Jarvis, P. G. & Jarvis, M. S. (1965). Resistances to carbon dioxide and water vapour transfer in leaves of different plant species. Physiologia Pl., 18, 557.
  • Kanemasu, E. T. & Tanner, C. B. (1969). Stomatal diffusion resistance of snap beans. II. Effect of light. Pl. Physiol., Lancaster, 44, 1542.
  • Kuiper, P. J. C. (1961). The effects of environmental factors on the transpiration of leaves, with special reference to stomatal light response. Meded. Landb Hoogesch., Wageningen, 61(7).
  • Loach, K. (1967). Shade tolerance in tree seedlings. I. Leaf photosynthesis and respiration in plants raised under artificial shade. New Phytol., 66, 607.
  • Mansfield, T. A. (1965). Studies in stomatal behaviour. XII. Opening in high temperature in darkness. J. exp. Bot., 16, 721.
  • Mansfield, T. A. & Heath, O. V. S. (1963). Studies in stomatal behaviour. IX. Photoperiodic effects on rhythmic phenomena in Xanthium pennsylvanicum. J, exp. Bot., 14, 334.
  • Meidner, H. & Heath, O. V. S. (1959). Studies in stomatal behaviour. VIII. Stomatal responses to temperature and carbon dioxide concentration in Allium cepa L., and their relevance to mid-day closure. J. exp. Bot., 10, 206.
  • Norman, J. M. & Tanner, C. B. (1969). Transient light measurements in plant canopies. Agron. J., 61, 847.
  • Slayter, R. O. & Bierhuizen, J. F. (1964). Transpiration from cotton leaves under a range of environmental conditions in relation to internal and external diffusive resistances. Aust. J. Biol. Sci., 17, 115.
  • Turner, N. C. (1969). Stomatal resistance to transpiration in three contrasting canopies. Crop Sci., 4, 303.
  • Turner, N. C. (1970). Response of adaxial and abaxial stomata to light. New Phytol., 69, 647.
  • Turner, N. C. & Waggoner, P. E. (1968). Effects of changing stomatal width in a red pine forest on soil water content, leaf water potential, bole diameter and growth. Pl. Physiol., Lancaster, 43, 973.
  • Van Bavel, C. H. M., Nakayama, F. S. & Ehrlek, W. L. (1965). Measuring transpiration resistance of leaves. Pl. Physiol., Lancaster, 40, 535.
  • Virgin, H. I. (1956). Light-induced stomatal movements in wheat leaves recorded as transpiration. Experiments with the Corona-Hygrometer. Physiologia Pl., 9, 280.
  • Walker, D. A. & Zelitch, I. (1963). Some effects of metabolic inhibitors, temperature and anaerobic conditions on stomatal movement. Pl. Physiol., Lancaster, 38, 390.
  • Wallihan, E. F. (1964). Modification and use of an. electric hygrometer for estimating relative stomatal aperture. Pl. Physiol., Lancaster, 39, 86.
  • Went, F. W. (1957). The experimental control of plant growth. Chronica hot., 17, 257.
  • Willis, A. J. & Balasubuamaniam, S. (1968). Stomatal behaviour in relation to rates of photosynthesis and transpiration in Pelargonium. New Phytol, 67, 265.
  • Zelitch, I. (1961). Biochemical control of stomatal opening in leaves. Proc. natn. Acad. Sci. U.S.A., 47, 1423.