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Changes in the water status of tea clones during dry weather in Kenya

Published online by Cambridge University Press:  27 March 2009

M. K. V. Carr
M. K. V. Carr
Affiliation:
National College of Agricultural Engineering, Silsoe, Bedford, England
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Summary

Partial closure of the stomata occurred during the middle of the day even when tea plants were growing in a wet soil and there were similar diurnal changes in the xylem water potential (ψx). As the soil dried the daily minimum values of ψx declined, more in some clones than in others, and there were also interesting differences between clones in the sensitivity of their stomata to changes in ψx. Possible ways in which these observations could form the basis of tests for screening clones for drought resistance are discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 89 , Issue 2 , October 1977 , pp. 297 - 307
Copyright
Copyright © Cambridge University Press 1977

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References

Biscoe, P. V. (1972). The diffusion resistance and water status of leaves of Beta vulgaris. Journal of Experimental Botany 23, 930–40.CrossRefGoogle Scholar
Biscoe, P. V., Cohen, Y. & Wallace, J. S. (1976). Community water relations: daily and seasonal changes of water potential in cereals. Philosophical Transactions Royal Society, London B 273, 565–80.Google Scholar
Boyer, J. S. (1970). Differing sensitivity of photosynthesis to low leaf water potentials in corn and soyabean. Plant Physiology, Lancaster 46, 236–9.CrossRefGoogle Scholar
Carr, M. K. V. (1968). Report on research into the water requirements of tea in East Africa. Proceedings of Specialist Committee on Applied Meteorology, E.A.A.F.R.O., Nairobi, Kenya.Google Scholar
Carr, M. K. V. (1971 a). An assessment of some of the results of tea/soil/water studies in Southern Tanzania. In Water and the Tea Plant (ed. , M. K. V. and Carr, S.), pp. 21–47. Kericho, Kenya: Tea Research Institute of East Africa.Google Scholar
Carr, M. K. V. (1971 b). The internal water status of the tea plant (Camellia sinensis): some results illustrating the use of the pressure chamber technique. Agricultural Meteorology 9, 447–60.CrossRefGoogle Scholar
Carr, M. K. V. (1976). Methods of bringing tea into bearing in relation to water status during dry weather. Experimental Agriculture 12, 341–51.CrossRefGoogle Scholar
Carr, M. K. V. (1977). Responses of seedling tea bushes and their clones to water stress. Experimental Agriculture 13, (in the Press).CrossRefGoogle Scholar
Fordham, R. (1971). Stomatal physiology and the water relations of the tea bush. In Water and the Tea Plant (ed. , M. K. V. and Carr, S.), pp. 89–100. Kericho, Kenya: Tea Research Institute of East Africa.Google Scholar
Kaufman, M. R. (1968). Water relations of pine seedlings in relation to root and shoot growth. Plant Physiology, Lancaster 43, 281–8.CrossRefGoogle Scholar
McCree, K. J. (1974). Changes in stomatal response characteristics of grain sorghum produced by water stress during growth. Crop Science 14, 273–8.CrossRefGoogle Scholar
Othieno, C. O. (1974). Physical characteristics of soils. Annual Report (1973), pp. 38–42. Kericho, Kenya: Tea Research Institute of East Africa.Google Scholar
Perkins, J. M. & Jinks, J. L. (1971). Analysis of genotype × environment interaction in triple test cross data. Heredity, London 26, 203–9.CrossRefGoogle Scholar
Ritchie, G. A. & Hinckley, T. M. (1975). The pressure chamber as an instrument for ecological research. In Advances for Ecological Research (ed. Macfadyen, A.) 9, 165–254.CrossRefGoogle Scholar
Sanchez-Diaz, M. E. & Kramer, P. J. (1971). Behaviour of corn and sorghum under water stress and during recovery. Plant Physiology, Lancaster 48, 613–16.CrossRefGoogle ScholarPubMed
Scott, R. M. (1962). Summary of soil survey observations on the Sambret valley. East African Agricultural and Forestry Journal 27, 22.CrossRefGoogle Scholar
Squire, G. R. (1976). Xylem water potential and yield of tea (Camellia sinensis) clones in Malawi. Experimental Agriculture 12, 289–97.CrossRefGoogle Scholar
Wight, W. (1959). Nomenclature and classification of the tea plant. Nature (London) 183, 1726–8.CrossRefGoogle Scholar
Williams, E. N. D. (1971). Investigations into certain aspects of water stress in tea. In Water and the Tea Plant (ed. , M. K. V. and Carr, S.), pp. 78–87. Kericho-Kenya: Tea Research Institute of East Africa.Google Scholar
Wormer, T. M. (1965). The effect of soil moisture, N. fertilization and some meteorological factors on stomatal aperture of Coffea arabica, L. Annals of Botany, London, N.S. 29, 533–9.CrossRefGoogle Scholar