Effects of Iron Deficiency Stress on Plant Growth and Quality in Flowering Chinese Cabbage and Its Adaptive Response

Iron (Fe) plays an important role in the growth and development of plants. The effects different Fe concentrations, 1-aminocyclopropane-1-carboxylic acid (ACC), cobalt chloride (Co2+) treatments on plant growth, quality adaptive response to deficiency stress were investigated flowering Chinese cabbage. results revealed that inhibited growth. contents vitamin C, soluble protein, sugar leaves stalks significantly reduced under stress, while content cellulose nitrate was increased. clearly net photosynthetic rate reductase activity leaves. balance system active oxygen metabolism destroyed due deficiency, resulting decrease catalase activity, superoxide dismutase roots leaves, peroxidase (POD) POD malonaldehyde ACC pH value root medium, promoted release ethylene, increased Fe3+ Co2+ treatment showed opposite those treatments. Thus, affected nitrogen metabolism, photosynthesis, reactive which related physiological tolerance mechanisms. We also found ethylene could be involved regulating