2. Materials and methods
2.1. Plant materials
One-year-old plants of Sacha inchi (Plukenetia volubilis L.) were
grown in a field at Xishuangbanna Tropical Botanical Garden
(21◦54 N, 101◦46 E, 580 m in altitude) of the Chinese Academy
of Sciences located in Menglun town, Mengla County, Yunnan
Province, southwest China. The inflorescences were emasculated