“…Therefore, it is need to select appropriate reference genes that has a consistent level of expression under specific experimental conditions. At present, several studies on the evaluation and validation of reference genes have been carried out for many plant species, such as Arabidopsis thaliana (Czechowski et al, 2005; Remans et al, 2008), potato (Nicot et al, 2005), coffee (Barsalobres-Cavallari et al, 2009; Cruz et al, 2009; de Carvalho et al, 2013), rice (Kim et al, 2003; Jain et al, 2006), tomato (Expósito-Rodríguez et al, 2008; Mascia et al, 2010), wheat (Paolacci et al, 2009), pearl millet (Shivhare and Lata, 2016), barley (Burton et al, 2004), Brassica napus (Wang et al, 2014), radish (Xu et al, 2012), apple (Perini et al, 2014), rose (Meng et al, 2013), soybean (Jian et al, 2008; Hu et al, 2009), sugarcane (Iskandar et al, 2004), peanut (Jiang et al, 2011), tobacco (Schmidt and Delaney, 2010), banana (Chen et al, 2011), Buchloe dactyloides (Li W. et al, 2015), Salicornia europaea (Xiao et al, 2014), flixweed (Xu et al, 2016), kiwifruit (Ferradás et al, 2016), pear (Xu et al, 2015), and Solanum lycopersicum L. (Fuentes et al, 2016). However, systematic evaluation of the selection of suitable reference genes for RT-qPCR data normalization in Achyranthes bidentata under various experiments has not been reported.…”