Abstract:
Oat seedlings were grown in nutrient solution to study the effect of aluminium on plant growth and mineral nutrition. Aluminium toxicity resulted in abnormal root development with many short thick roots. Chlorosis on the young leaves of Al-toxic plants appeared when iron was applied as ferric iron. It was suggested that this was due to interference in Fe3+ reduction to Fe2+ by aluminium. Iron concentration in young plant leaves in aluminium-toxic plants was not affected by iron source (Fe2+ or Fe3+). Experiments with ferrous iron source revealed that aluminium has no clearly apparent interference with Fe2+ utilization. The dry matter yield of oat tops and roots decreased progressively with an increase in Al-levels. The concentration of P was greater in roots of Al-toxic plants than control plants but a converse effect was recorded in tops. The overall uptake as well as utilization and translocation of P was affected in Al-treated plants. The concentration of P, K, Ca, Mg and Mn substantially decreased in plant tops with increased Ai-levels, while the concentration of Al and Zn increased in plant tops and roots.
Page(s):
130-135
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 23, Issue: 3--4, Year: 1980