Advertisement

Plant and Soil

, Volume 50, Issue 1–3, pp 681–690 | Cite as

Aluminium tolerance in triticale, wheat and rye as measured by root growth characteristics and aluminium concentration

  • L. M. Mugwira
  • S. M. Elgawhary
  • S. U. Patel
Article

Summary

Screening large populations of plant species for Al tolerance requires simple and rapid tests. In this study, root characteristics of 12 cultivars of triticale (X Triticosecale, Witt Mack), wheat (Triticum aestivum L.), and rye (Secale cereale L.) were measured in nutrient solution with 0 or 6 ppm Al added.

Aluminum injury to roots of triticale and wheat was characterized by decreases in root length, increases in the number of roots, and in Al-sensitive Redcoat and Arthur wheats by decrease in root weight. Root length and number of roots were correlated in triticale (r=−0.73*) and in wheat (r=−0.85*). Root length was also correlated with root weight in wheat (r=0.65*); there was no relationship between the number of roots and weight. Differences in Al tolerance of cultivars of the three species were greater when the solution was adjusted to pH 4.8 only on the first day of the experiment than when pH was maintained at pH 4.8 throughout the growing period. Triticale and rye cultivars low in ability to increase solution pH gradually overcame Al toxicity by increasing the nutrient solution pH between 12 and 22 days.

Aluminum sensitive triticale and wheat accumulated more Al in roots than tolerant cultivars when the solution pH was not adjusted daily; but no differences in Al accumulation were obtained between wheat cultivars at constant pH value. This study indicated that root length and number of roots can be reliably used for screening triticales for Al tolerance within 12 days of exposure to Al. Root length, Al concentration, and dry weight after 22 days of Al treatment were also reliable criteria for evaluating differential Al tolerances among triticale cultivars.

Keywords

Root Length Nutrient Solution Wheat Cultivar Aluminium Concentration Root Weight 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Foy, C. D., Effects of aluminum on plant growth.In Plant Root and Its Environment. E. W. Carson (ed.). Univ. Press of VA, Charlottesville, VA. pp. 601–642 (1974).Google Scholar
  2. 2.
    Foy, C. D., Fleming, A. L., Burns, G. R. and Armiger, W. H., Characterization of differential aluminum tolerance among varieties of wheat and barley. Soil Sci. Soc. Am. Proc.31, 513–521 (1967).Google Scholar
  3. 3.
    Foy, C. D., Burns, G. R., Brown, J. C. and Fleming, A. L., Differential aluminum tolerance of wheat varieties associated with plant induced pH changes around their roots. Soil Sci. Soc. Am. Proc.29, 64–67 (1965).Google Scholar
  4. 4.
    Foy, C. D., Lafever, Schwartz, J. W. and Fleming, A. L., Aluminum tolerance of wheat cultivars related to region of origin. Agron. J.66, 751–755 (1974).Google Scholar
  5. 5.
    Jones, L. H. and Thurman, D. A., The determination of Al in soils, ash, and plant material using Eriochrome Cyanine-R. Plant Sci.9, 131–142 (1957).Google Scholar
  6. 6.
    Kerridge, P. C., Dawson, M. D. and Moore, D. P., Separation of degrees of aluminum tolerance in wheat. Agron. J.63, 586–591 (1971).Google Scholar
  7. 7.
    Lafever, H. N., Campbell, L. G. and Foy, C. D., Differential response of wheat cultivars to Al. Agron. J.69, 563–568 (1977).Google Scholar
  8. 8.
    Mugwira, L. M., Elgawhary, S. M. and Patel, K. I., Differential tolerances of triticale, wheat, rye, and barley to aluminium in nutrient solution. Agron. J.68, 782–787 (1976).Google Scholar
  9. 9.
    Mugwira, L. M., and Patel, S. U., Root zone pH changes and ion uptake imbalances by triticale, wheat, and rye. Agron. J.69, 719–722 (1977).Google Scholar
  10. 10.
    Neenan, M., The effects of soil acidity on the growth of cereals with particular references to the differential reactions of varieties thereto. Plant and Soil12, 324–328 (1960).CrossRefGoogle Scholar
  11. 11.
    Nightingale, G. T., Ammonium and nitrate nutrition of dormant Delicious apple trees at 48F. Bot. Gaz.95, 437–452 (1934).CrossRefGoogle Scholar
  12. 12.
    Reid, D. A., Fleming, A. L. and Foy, C. D., A method for determining aluminum responses of barley in nutrient solution in comparison to response in Al-toxic soil. Agron. J.63, 600–603 (1971).Google Scholar

Copyright information

© Martinus Nijhoff 1978

Authors and Affiliations

  • L. M. Mugwira
    • 1
  • S. M. Elgawhary
    • 2
  • S. U. Patel
    • 1
  1. 1.Department of Natural Resource and Environmental StudiesAlabama A & M UniversityNormal
  2. 2.Biophysics Dept.Michigan State UniversityEast Lansing

Personalised recommendations