Relationship Between O_2~ Content,POD Activity and Potassium Distribution of K~+ Deficiency Tolerant Maize in Seedling Growth

Using maize inbred line T(tolerant to low-potassium) and maize inbred line S(sensitive to potassium) as tested materials,the relationship of dynamic change following leaf growing stage between O2 produce rate,POD activity,and potassium distribution in different parts of the plants were studied.The results showed that,under low potassium cases,in top leaves of tolerant to low-potassium maize inbred line O2 Produce rate had a lower level,and there was a relatively POD activity stable in leaves and roots,it was able to transport more potassium to top leaves;The distribution of Potassium ion in plant had a correlation with O2 Produce rate and POD activity.