摘要:主要研究Cr6+胁迫对玉米种子萌发及幼苗叶绿素含量、游离脯氨酸等生理指标的影响,并测定了重金属在玉米各器官内的沉积量.实验表明,较低浓度Cr6+对玉米的芽、幼根生长及叶绿素的合成均有不同程度的刺激作用,而较高浓度则对以上指标起抑制作用.Cr6+在玉米各器官内的沉积呈明显的按根、茎、叶依次减少的趋势.
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