Effects of Fe and Zn on Seed Germination and Seedlings Physiology and Biochemistry of Brassica rapa L.

[Objective]The purpose was to study the effect of Fe and Zn on seed germination and seedling physiology and biochemistry of Brassica rapa L.[Method]Taking the Brassica rapa L.as materials,the effects of different concentrations of Fe and Zn pollution on seed germination,seedling growth,chlorophyll content and CAT activity of Brassica rapa L.were studied.[Result]The effect of low concentration(≤0.05 mmol/L) of Fe2+,Zn2+ is not obvious on Brassica rapa L.cabbage.The high concentration can produce inhibition.With the increasing of Fe2+,Zn2+ concentrations,the fresh weight and the chlorophyll content of Brassica rapa L.cabbage show downward trend.With the increase of Fe2+ concentration,the CAT activity in Brassica apa L.seedling has improved;Zn2+ concentration was promoted,and then inhibited;the activity of CAT at the concentration of 0.25 mmol/L was the highest.[Conclusion]The effects of Fe and Zn on Brassica rapa L.seed germination was little and on seedling growth was big.