Table 2. The administrative approval of transgenic multiple insect-resistant genes poplars in China.
| Gene | Poplar varieties | Small-scale field testing |
Environmental release and pilot-scale production |
Commercialization |
| Cry1Ac + API | Poplar 741 | 1996–1998 | 1999–2001 | 2002–2007 |
| Cry3A + OC-I + Vgb + SacB + JERF36 | P. euramericana 'Guariento' | 2005–2008 | 2009–2013 | |
| Cry1A(b) + spider insecticidal peptide gene | P. simonii × P. nigra | 2006–2010 | ||
| Cry1Ac + API | P. tomentosa Carr. Clone BL73 | 2011–2014 | ||
| Cry3A + Cry1Ac + API | Poplar 741 | 2011–2014 | ||
| Cry1Ac + API | P. euramericana 'Neva' | 2011–2014 | 2016–2018 | |
| Cry3A + Cry1Ac + BADH | P. euramericana 'Neva' | 2016–2018 | 2019–2021 | |
| Cry3A + Cry1Ac + NTHK1 | P. euramericana 'Neva' | 2016–2018 | 2019–2021 | |
| Cry3A + Cry1Ac | P. euramericana 'Neva' | 2019–2021 | ||
| Cry3A + Cry1Ac | Populus deltocdes '55/56' × P. deltocdes '2KEN8' | 2019–2021 |