Mechanisms of aluminum tolerance in Triticum aestivum (wheat). V. Nitrogen nutrition, plant-induced pH, and tolerance to aluminum; correlation without causality?
- 1 April 1988
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 66 (4) , 694-699
- https://doi.org/10.1139/b88-100
Abstract
An aluminium-tolerant cultivar (''Atlas-66'') and an aluminum-sensitive cultivar (''Scout-66'') of Triticum aestivum L. were grown in solution culture under conditions of varying NH4+ and NO3- supply with or without 75 .mu.M aluminium. Plants grown with a low NH4+/(NH4+ + NO3-) (NH4+/N) ratio in solution maintained a higher solution pH than plants grown with a high NH4+/N ratio. Although root growth of ''Scout-66'' was greater under high NO3-, high solution pH conditions, the relative tolerance of the cultivars to Al was unaffected by the NH4+/N ratio and by solution pH. The superior Al tolerance of ''Atlas-66'' could not be explained solely by its ability to maintain a high solution pH in mixed nitrogen solutions.Keywords
This publication has 1 reference indexed in Scilit:
- Ammonium Uptake by Wheat Varieties Differing in Al Tolerance1Agronomy Journal, 1983