Cotton

43 detections of insects having acquired resistance to the Bt proteins supposed to kill them were listed in a scientific article in 2023. 43 cases out of 73 studied, i.e. more than half. For the authors of the article, the use of insecticidal GMOs has been crowned with success, as in several cases it has made it possible to reduce or even eradicate local pests. But failures also occurred due to resistance. The authors believe that the future lies in a combination of technologies, among which is RNA interference.

In Spain, the public agronomy institute Irta regularly carries out evaluations of several varieties of rapeseed. Recently, they introduced into their evaluation some Clearfield rapeseed varieties, herbicide tolerant varieties modified via in vitro mutagenesis. Result: these GMOs, grown commercially in Europe outside the legal framework, do not have better yields than their conventional counterparts.