2. Materials and methods
2.1. Plant materials
Mature J. curcas seeds were collected from the city of Panzhihua,
in Sichuan Province of China. The full seeds were selected and the
dry seed capsules were taken off manually. The endosperm and
embryo were separated with scalpel manually and each of them
with around 0.5 g was packaged with silver paper and stored at
−80 ◦C for further use.