Aluminium-Toleranz von Ackerbohne (Vicia faba), Lupine (Lupinus luteus), Gerste (Hordeum vulgare) und Roggen (Secale cereale). II. Mineralstoffgehalte in Sproß und Wurzeln in Abhängigkeit vom Aluminium-Angebot |
| |
| Authors: | W J Horst H Gppel |
| |
| Institution: | W. J. Horst,H. Göppel |
| |
| Abstract: | Al tolerance of horse bean, yellow lupin, barley and rye. II. Mineral element concentrations in shoots and roots as affected by Al supply Inhibition of seminal root elongation by Al in solution culture gave the following ranking for Al tolerance: yellow lupin (Lupinus luteus ?Schwako”?) ? rye (Secale cereale ?Kustro)”? « horse bean (Vicia faba ?Herz Freya”?) > barley (Hordeum vulgare ?Roland”?). Exclusion from uptake by inactivation of Al outside the root was not responsible for the higher Al tolerance of lupin and rye, because comparable inhibition of root elongation occured at much higher Al concentration of the root and the root tips (5 mm) compared to barley and horse bean. The plant species differed considerable in nutrient concentrations of the roots: higher Ca concentrations in horse bean and rye, higher Mg concentrations in rye and lupin and higher P concentration in lupin. Al supply reduced Ca and Mg concentrations (Ca > Mg) in shoots and roots of all species. P concentrations were hardly affected. The nutrient concentrations in the root tips did not indicate that induction of nutrient deficiency was responsible for the effect of Al on root elongation and Al sensitivity of barley and horse bean. The considerable differences in Ca, Mg and P concentrations of the roots between the Al-tolerant plant species rye and lupin do not suggest a common physiological mechanism responsible for Al tolerance. |
| |
| Keywords: | |
|
|
