Aluminum (Al) toxicity inhibits root growth, while nitrogen is an essential nutrient for plant growth and development. To explore the effects of nitrate (N) on Al accumulation in wheat, two wheat genotypes, Shengxuan 6 hao (SX6, Al-tolerant genotype) Zhenmai 168 (ZM168, Al-sensitive genotype), were used a hydroponic experiment with four treatments (control without N or Al, N, Al+N, respectively...