| transgenic dna introgressed into traditional maize landraces in oaxaca, mexico. | concerns have been raised about the potential effects of transgenic introductions on the genetic diversity of crop landraces and wild relatives in areas of crop origin and diversification, as this diversity is considered essential for global food security. direct effects on non-target species, and the possibility of unintentionally transferring traits of ecological relevance onto landraces and wild relatives have also been sources of concern. the degree of genetic connectivity between industrial ... | 2001 | 11734853 |
| absence of detectable transgenes in local landraces of maize in oaxaca, mexico (2003-2004). | in 2000, transgenes were detected in local maize varieties (landraces) in the mountains of oaxaca, mexico [quist, d. & chapela, i. h. (2001) nature 414, 541-543]. this region is part of the mesoamerican center of origin for maize (zea mays l.), and the genetic diversity that is maintained in open-pollinated landraces is recognized as an important genetic resource of great cultural value. the presence of transgenes in landraces was significant because transgenic maize has never been approved for ... | 2005 | 16093316 |