Effects of manganese and boron nutrition on yield and activities of antioxidant enzymes of cucumber(Cucumis sativus L.)

The field experiment was conducted and physiological characters were measured to study the effects of manganese and boron nutrition on yield and antioxidant enzymes of cucumber(Cucumis sativus L.).The results show that there is a remarkable interaction between Mn and B. The combination of Mn and B nutrition at a proper level can increase cucumber yield,activities of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),nitrate reductase(NR),and contents of chlorophyll,antiscorbutic acid(ASA);decrease malondialdehyde(MDA)content.There are a significant positive relationship between productive capability of cucumber and the activities of SOD,POD,CAT,NR,and a significant negative correlation with the MDA content.