Transcriptome and metabolome analyses provide insights into the relevance of pericarp thickness variations in Camellia drupifera and Camellia oleifera oleh Yongjuan Li, Boyong Liao, Yi Wang, Huihua Luo, Shimin Wang, Caiqin Li, Wenpei Song, Kunchang Zhang, Boqun Yang, Shaoqiang Lu, Bipei Zhang, Yongquan Li