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Plant and Soil

, Volume 99, Issue 2–3, pp 241–253 | Cite as

Differential effects of low concentrations of aluminium on the growth of four genotypes of white clover

  • S. C. Jarvis
  • D. J. Hatch
Article

Summary

The effects of aluminium (Al3+) on the growth of four cultivars of white clover dependent upon NO3−N were examined. Plants were grown in flowing solution culture with carefully maintained low concentrations (0, 12.5, 25 and 50 mmolm−3) of Al, and with P and pH (4.5) also held constant and appropriately low. A three-week treatment period resulted in major effects on the growth and elemental composition of shoots and roots at all concentrations of added Al. There were inherent differences between the cultivars in growth but the relative effects of Al were similar in each case. Examination by S.E.M. and x-ray microanalysis of one cultivar grown at 50 mmolm−3 Al, indicated that Al in the roots was associated with P, especially in old, outer epidermal cells. Aluminium reduced NO3 uptake and there were significant effects of Al on nitrate reductase activity (NRA). In contrast to the other characteristics, there were differential effects between the cultivars in NRA, both in the presence and absence of Al.

Key words

Aluminum Flowing solution culture Genotype Nitrate reductase Trifolium repens L. White clover 

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Copyright information

© Martinus Nijhoff Publishers 1987

Authors and Affiliations

  • S. C. Jarvis
    • 1
  • D. J. Hatch
    • 1
  1. 1.The Animal and Grassland Research InstituteHurley, MaidenheadUK

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