Study location and species
We conducted the experiment in a greenhouse at the Northeast Institute
of Geography and Agroecology, Chinese Academy of Sciences (125°24’3”E,
43°59’49”N). An invasive and a native plant species from the same genus
form a pair, all plants coexist commonly in the field in China, and four
plant species pairs were used in this experiment (Table S1). We
classified the species as invasive or native to China based on the book
“The Checklist of the Alien Invasive Plants in China” (Ma, et al.
2018) and the Flora of China database (www.efloras.org ). The
seedings material came from the seeds and vegetatively (Table S1).