Tolerance drought

Morgan, J.M. (1983). Osmoregulation as a selection criterion for drought tolerance in wheat. Australian Journal of Agricultural Research, 34, 607-14. 

Austin, R.B. (1987). Some crop characteristics of wheat and their influences on yield and water use. In Drought Tolerance in Winter Cereals, ed. J.P. Srivastava, E. Porceddu, E. Acevedo and S. Varma, pp. 321-36. Chichester John Wiley. 

Wyn Jones, J.R. Gorham, J. (1983). Aspects of salt and drought tolerance. In Genetic Engineering of Plants An Agricultural Perspect, ed. T. Kosuge, C.P. Meredith and A. Hollaender, pp. 355-70. New York Plenum Press. 

Ceccarelli, S. (1987). Yield potential and drought tolerance of segregating populations of barley in contrasting environments. Euphytica, 36, 265-73. 

Chaudhuri, U.N., Deaton, M.L., Kanemasu, E.T., Wall, G.W., Marcarian, V. Dobrenz, A.K. (1986). A procedure to select drought-tolerant sorghum and millet genotypes using canopy temperature and vapor pressure deficit. Agronomy Journal, 78, 490-4. 

Jordan, W.R. Miller, F.R. (1980). Genetic variability in sorghum root systems implication for drought tolerance. In Adaptation of Plants to Water and High Temperature Stress, ed. N.C. Turner and P.J. Kramer, pp. 383-400. New York Wiley Interscience. 

Rosenow, D.T., Quisenberry, J.E. Wendt, C.W. (1983). Drought tolerant sorghum and cotton germplasm. Agricultural Water Management, 7, 207-22. 

Vaadia, Y. (1987). Salt and drought tolerance in plants regulation of water use efficiency in sensitive and tolerant species. In NATO Conference on Biochemical and Physiological Mechanisms Associated with Environmental Stress Tolerance in Plants, University of East Anglia, Norwich, 2-7 August 1987. 

From the above, it can be seen that there is a need for a screening test that is a more specific indicator of drought tolerance than yield itself, that will measure the response of the plant integrated over a substantial part of its life cycle, is non-destructive and can be used for testing large numbers of plants. A test which appears to meet these criteria is carbon isotope... 

Iuchi, S., M. Kobayashi et al. (2000). A stress-inducible gene for 9-cw-epoxycarotenoid dioxygenase involved in abscisic acid biosynthesis under water stress in drought-tolerant cowpea. Plant Physiol. 123(2) 553-562. 

Qin, X. Q. and J. A. D. Zeevaart (2002). Overexpression of a 9-cA-epoxycarotenoid dioxygenase gene in Nicotiana plumbaginifolia increases abscisic acid and phaseic acid levels and enhances drought tolerance. Plant Physiol. 128(2) 544-551. 

Genetically engineered traits are being introduced into new crops (e.g. alfalfa and strawberries) and new GM events (traits), which may have a greater impact on human health (e.g. pharmaceutical traits) and the environment (e.g. drought tolerance and plant made industrial products) are being developed. 

Above right) Drought-tolerant herbs Rosemary and lavender (pictured) are perfect companions in a dry, sunny spot. Other drought-tolerant herbs include sage, thyme, curry plant, cotton lavender (santolina), and artemisia. 

Plant native and/or drought-tolerant grasses, ground covers, shrubs, and trees. Once established, they do not need to be watered frequendy and usually survive a dry period without any watering. 

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