Selection of reference genes for quantitative real-time PCR of Leymus chinensis in different tissues

• Ning-ning Hu, 
• Hui-qin Guo, 
• Xi-liang Li, 
• Ling-qi Kong, 
• Zi-nian Wu, 
• Ji-ze
  Zhang, 
• Chun Chang, 
• Dong-li Wan, 
• Hui Zang, 
• Wei-bo Ren