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Salinity Effects with EPTC and CDEC in Tomato (Lycopersicon esculentum) and Lettuce (Lactuca sativa)

Published online by Cambridge University Press:  12 June 2017

Sebastian Acosta-Nunez
Affiliation:
Dep. Bot., Univ. of California, Davis, CA 95616
Floyd M. Ashton
Affiliation:
Dep. Bot., Univ. of California, Davis, CA 95616

Abstract

The combination of salts at the approximate ratio found in saline irrigation water, (NaCl 41.9 mM, CaCl2 20.9 mM, and MgCl2.6H2O 10.5 mM), with either 1 mM EPTC (S-ethyl dipropylthiocarbamate) or 0.1 mM CDEC (2-chloroallyl diethyldithiocarbamate) induced a greater reduction of root length, shoot length, and fresh weight of tomato (Lycopersicon esculentum Mill. ‘VF-315’) relative to either factor alone. The osmotic pressure of this salt solution is 0.40 MPa (mega Pascal), which is equivalent to 4.0 bar or ca. 4.0 atm. Similar results were found in lettuce (Lactuca sativa L. ‘Great Lakes–659’) using salts at 0.30 MPa (NaCl 31.4 mM, CaCl2 15.7 mM, and MgCl2.6H2O 7.3 mM) combined with either 0.75 mM EPTC or 0.2 mM CDEC. In tomato, the inhibition was additive for each parameter measured. In lettuce, however, the effect on fresh weight and shoot length was synergistic and the effect on root length was additive. Calcium chloride was the single salt component of the mixture, which when combined with either EPTC or CDEC, induced a significant reduction of root length, shoot length, and fresh weight in tomato relative to either factor alone. No additional reduction in growth was found in lettuce when each individual salt was combined with either EPTC or CDEC.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Adams, R. S. 1965. Phosphorus fertilization and the phytotoxicity of simazine. Weeds 13:113116.Google Scholar
2. Ashton, F. M. and Crafts, A. S. 1973. Mode of Action of Herbicides. Wiley-Interscience, New York. 504 pp.Google Scholar
3. Bernstein, L. and Ayers, A. D. 1953. Salt tolerance of five varieties of carrots. Proc. Am. Soc. Hortic. Sci. 61:360366.Google Scholar
4. Bingham, S. W. and Upchurch, R. P. 1959. Some interactions between nutrient level (N, P, K, Ca) and diuron in the growth of cotton and Italian ryegrass. Weeds 7:167177.Google Scholar
5. Brown, H. D., Neucere, N. J., Altschul, A. M., and Evans, W. J. 1965. Activity pattern of purified ATPase from Arachis hypogaea . Life Sci. 4:14391447.Google Scholar
6. Cheng, P. Y. 1965. Ultraviolet-rotatory dispersion as a probe for interaction between DNA and metal ions. Biochem. Biophys. Acta 102:314316.Google Scholar
7. Chrispeels, M. J. and Varner, J. E. 1967. Gibberellic acid-enhanced synthesis and release of α-amylase and ribonuclease by isolated barley aleurone layers. Plant Physiol. 42:398406.Google Scholar
8. Colby, S. R. 1967. Calculating synergistic and antagonistic responses of herbicide combination. Weeds 15:2022.CrossRefGoogle Scholar
9. Dhillon, P. S., Byrnes, W. R., and Merritt, C. 1967. Simazine and phosphorus interaction in red pine seedlings. Weeds 15:339343.CrossRefGoogle Scholar
10. Dodds, J. A. A. and Ellis, R. J. 1966. Cation-stimulated ATPase activity in plant cell walls. Biochem. J. 101:31.Google Scholar
11. Epstein, E. 1961. The essential role of calcium in selective cation transport by plant cells. Plant Physiol. 36:437444.Google Scholar
12. Gauch, H. G. and Wadleigh, C. H. 1944. Effects of high salt concentrations on growth of bean plants. Bot. Gaz. 105:379387.Google Scholar
13. Greenway, H. 1973. Salinity, plant growth, and metabolism. Australian Inst. Agric. Sci., 39:2434.Google Scholar
14. Hayward, H. E. and Wadleigh, C. H. 1949. Plant growth on saline and alkali soils. Adv. Agron. 1:138.Google Scholar
15. Jones, R. G. W. and Lunt, O. R. 1967. The function of calcium in plants. Bot. Rev. 33:407426.Google Scholar
16. Kirby, K. S. 1957. A new method for the isolation of deoxyribonucleic acids. Evidence on the nature of bonds between DNA and protein. Biochem. J. 66:495504.Google Scholar
17. Rush, D. W. and Epstein, E. 1976. Genotypic response to salinity. Plant Physiol. 57:162166.Google Scholar
18. Sorokin, H. and Sommer, A. L. 1929. Changes in the cells and tissues of root tips induced by the absence of calcium. Am. J. Bot. 16:2329.Google Scholar
19. Stanley, R. A. 1975. Interaction of calcium and 2,4-D on eurasian watermilfoil. Weed Sci. 23:182184.Google Scholar
20. Steel, R. G. D. and Torrie, J. H. 1960. Principles and Procedures of Statistics. McGraw-Hill Book Company, Inc., New York. 481 pp.Google Scholar
21. Taylor, S. A. and Ashcroft, G. L. 1972. Physical Edaphology. W. H. Freeman, San Francisco. 533 pp.Google Scholar
22. United States Salinity Lab. Staff. 1954. Diagnosis and Improvement of Saline and Alkali Soils. USDA Handbook 60. 160 pp.Google Scholar
23. Upchurch, R. P., Ledbetter, G. R., and Selman, F. L. 1963. The interaction of phosphorus with the phytotoxicity of soil applied herbicides. Weeds 11:3641.Google Scholar
24. Viets, F. G. 1944. Calcium and other polyvalent cations as accelerators of ion accumulation by excised barley roots. Plant Physiol. 19:466480.Google Scholar