Az Eszterházy Károly Tanárképző Főiskola Tudományos Közleményei. 2004. Sectio Biologiae. (Acta Academiae Paedagogicae Agriensis : Nova series ; Tom. 25)

Zsoldos, F., Vashegyi, Á., Pécsváradi, A. and Bóna, L.: Aluminium toxicity in roots: correlation between root elongation and potassium fluxes in aluminium-sensitive and aluminium-tolerant cereal species

Aluminium Toxicity in Roots. 163 The post-effect (3d) of 0.05 mM Al at various (0.1 and 1.0 mM) phosphate (P) supplies on the growth (DW) of different cereal seedlings can be seen in Figure 3. The results clearly indicate that Al treatment in low salt condition (0.5 mM CaS0

4) influence significantly the growth of roots of different cereal species in the absence of P. The presence of 0.1 mM P (low P-roots) in the growth solution, however, cause a significant decrease in the toxic effect of Al and at 1.0 mM P-concentration (high P-roots) and Altreatments do not show any inhibitory effect on the growth (DW) of cereal seedlings. • Root • Shoot GK Betadur Jub. 50 GK Marco GKWibro poo opo ooo ooo ö ö ö ö ö ö ö ö ö ö o Ó Figure 3. Effects of Al- and P-treatments on the growth of different cereal seedlings. Plants were grown for 4 days in 0.5 mM CaS0

4 solution at pH 6.5. After the 4th day the seedlings were treated for 3 days with 0.5 mM CaS0

4 solution in presence and absence of Al and P as indicated on the graph, pH value was 4.1.