Influence mechanism of awns on wheat grain Pb absorption: Awns' significant contribution to grain Pb was mainly originated from their direct absorption of atmospheric Pb at the late grain-filling stage

• Chuang MaZhengzhou University of Light Industry
• Yawei YuZhengzhou University of Light Industry
• Fuyong LiuUniversità di Camerino
• Lin LinZhengzhou University of Light Industry
• Ke ZhangZhengzhou University of Light Industry
• Nan LiuZhengzhou University of Light Industry
• Hongzhong ZhangZhengzhou University of Light Industry