Effects of Iron Deficiency Stress on the Growth and Chlorophyll Fluorescence Characteristics of Gypsophila paniculata L. Tissue-cultured Seedlings

• WU Jie, 
• LIU Rong, 
• WANG Ling, 
• SAUBAN MUSA Jibril, 
• LI Yajuan, 
• LI Chengyun