[1. Dale, J. E., F. L. Milthorpe (eds.): The growth and functioning of leaves; Cambridge University Press, Cambridge, 1983.]Search in Google Scholar
[2. Cameron, A. L., K. E. Hunter and N. K. R. Smith: The subcellular concentration of ions and elements in cryosections of onion root meristem; J. Cell Sci 72 (1984) 295-306.]Search in Google Scholar
[3. McCully, M. E., M. J. Canny and R. F. M. van Steveninck: Accumulation of potassium by differentiating metaxylem elements of maize roots; Physiol. Plant. 69 (1987) 73-80.]Search in Google Scholar
[4. Leigh, R. A., M. Chater, R. Storey and A. E. Johnstone: Accumulation and sub-cellular distribution of cations in relation to the growth of K+ deficient barley; Plant, Cell and Environ. 9 (1986) 595—604.]Search in Google Scholar
[5. Echlin, P., and S. E. Taylor: The preparation and X-ray microanalysis of bulk frozen hydrated vacu- olate plant tissue; J. Microsc. (Oxf.) 141 (1986) 329—348.]Search in Google Scholar
[6. Pawley, J. B., and J. T. Norton: A chamber attached to the SEM for fracturing and coating frozen biological specimens; J. Microsc. (Oxf.) 112 (1978) 160-^182.]Search in Google Scholar
[7. Statham, P. J., and J- B. Pawley: A new method of particle X-ray microanalysis based on peak to background measurements; Scanning Electron Microsc. 1978 (I), 469—478.]Search in Google Scholar
[8. Statham, P, J.: Measurement and use of peak to background ratios in X-ray microanalysis; Micro-chim. Acta Suppl, 8 (1979) 229-238.]Search in Google Scholar
[9. Ronnhult, T., B. Brox and G. Fritze: The influence of surface topography on the X-ray intensity in the electron probe analysis (EDS/WDS); Scanning 9 (1987) 81—87.]Search in Google Scholar
[10. Pearce, R. S., and A. Beckett: Cell shapes in leaves of drought-stressed barley examined by low temperature scanning electron microscopy; Ann. Bot. (Lond.) 59 (1987) 191-195.]Search in Google Scholar
[11. Echlin, P.: Artefacts in the X-ray microanalysis of frozen hydrated biological samples; Proc. 45th Annu. Meeting of the Electron Microscope Society of America, ed. G. W. Bailey, San Francisco Press, San Francisco, Calif., pp. 658—659, 1988.10.1017/S0424820100127724]Search in Google Scholar
[12. Wiliard, H. H., L. OL Merritt, J. A. Dean and F. A. Settle: Instrumental methods of analysis, 7th ed., Wadsworth Publishing Company, Belmont, California, 1988.]Search in Google Scholar
[13. Akehurst, B. C.: Tobacco, 2nd ed., Longman, London and New York, 1981.]Search in Google Scholar
[14. Tso, T. C.: Micro- and secondary elements in tobacco; Bot. Bull. Acad. Sin. (Taipei) 7 (1966) 28-63.]Search in Google Scholar
[15. Thimann, K. V. (ed.): Senescence in plants; CRC Press, Boca Raton, Fla., 1981.]Search in Google Scholar
[16. Woolhouse, H. W., and G. I. Jenkins: Physiological responses, metabolic changes and regulation during leaf senescence; in The growth and functioning of leaves, ed, J. E. Dale and F. L. Milthorpe, Ch. 15, Camb. Univ. Press, Cambridge, 1983.]Search in Google Scholar
[17. Leshem, Y. Y., A. J. Halevy and C. Frankel: Processes of control of plant senescence; Elsevier, Amsterdam, 1986.]Search in Google Scholar
[18. Nooden, L. D.: Senescence in the whole plant; in Senescence in plants, ed. K. V. Thimann, Ch. 10, CRC Press, Boca Raton, Fla., 1980.]Search in Google Scholar
[19. Dale, J. E., and F. L. Milthorpe: General features of the production and growth of leaves; in The growth and functioning of leaves, ed. J. E. Dale and F. L. Milthorpe, Ch. 6, Camb. Univ. Press, Cambridge, 1983.]Search in Google Scholar
[20. Ho, L. C., R. G. Hurd, L. J. Ludwig, A. F. Shaw, J. M. H. Thornley and A. C. Withers: Changes in photosynthesis, carbon budget and mineral content during the growth of the first leaf of cucumber; Ann. Bot. (Lond.) 54 (1984) 87-101.]Search in Google Scholar
[21. Terry, N., N. J. Waldron and S. E. Taylor: Environmental influences on leaf expansion; in The growth and functioning of leaves, ed. J. E. Dale and F. L. Milthorpe, Ch. 7, Camb. Univ. Press, Cambridge, 1983.]Search in Google Scholar
[22. Wynn-Jones, R. G., C. J. Brady and J. Spiers: Ionic and osmotic relations in plant cells; in Recent advances in the biochemistry of cereals, ed. D. L. Laidman and R. G. Wynn-Jones, Academic Press, London, 1979.]Search in Google Scholar
[23. Derman, B. D., D. C. Rupp and L. D. Nooden: Mineral distribution in relation to fruit development and monocarpic senescence in Anoka soybeans; Am. J. Bot. 65 (1978) 205—213.]Search in Google Scholar
[24. Ho, L. C., and A. F. Shaw: Net accumulation of minerals and water and the carbon budget of expanding leaves of tomato; Ann, Bot. (Lond.) 43 (1979) 45-54.]Search in Google Scholar
[25. Williams, R. F.: Redistribution of mineral elements during development; Annu. Rev. Plant Physiol. 6 (1955) 25—42.10.1146/annurev.pp.06.060155.000325]Search in Google Scholar
[26. Macnicol, P. K., R. E. Young and J. B. Biale: Metabolic regulation in the senescing tobacco leaf; Plant Physiol. (Bethesda) 51 (1973) 793-797.10.1104/pp.51.4.79336634716658411]Search in Google Scholar
[27. Greenway, H., and M. G. Pitman: Potassium re-trans location in seedlings of Hordeum vulgaris; Aust. J. Biol. Sci. 18 (1965) 235-247.]Search in Google Scholar
[28. Graham, R. D., and A. Ulrich: Re-translocation of potassium in Beta vulgaris L. under conditions of low sodium supply; Aust. J. Plant Physiol. 1 (1974) 387—396.]Search in Google Scholar
[29. Vickery, H. B.: Chemical investigations of the tobacco plant, XI. Composition of the green leaf in relation to position on the stalk; Conn. Agric Exp. Stn. Bull. (New Haven) 640 (1976) 221—236.]Search in Google Scholar
[30. Franceschi, V. R., and H. T, Horner: Calcium oxalate crystals in plants; Bot. Rev. 46 (1980) 361— 427.]Search in Google Scholar
[31. Raven, J. A., and F. A, Smith: Nitrogen assimilation and transport in vascular land plants in relation to intracellular pH regulation; New Phytol. 76 (1976) 415-431.]Search in Google Scholar
[32. Kelly, G. J., E. Latzko and M. Gibbs: Regulatory aspects of photosynthetic carbon metabolism; Annu. Rev. Plant Physiol. 27 (1976) 181—205.]Search in Google Scholar
[33. Ferguson, I, B.: Calcium in plant senescence and ripening; Plant, Cell and Environ. 7 (1984) 477— 489.10.1111/j.1365-3040.1984.tb01438.x]Search in Google Scholar
