GM Corn BT Traits Beneficial and Safe, Study says

©Debra L Ferguson Stock Photography

Bt traits got international attention this past month, after Mexican scientists released a mega-analysis of Bt-corn hybrids.

The team of Mexican scientists conducted an environmental risk assessment of two genetically modified (GM) corn hybrids containing Bt proteins, Genuity VT Triple Pro and Genuity VT Double Pro as well as one Roundup Ready hybrid.

The GM hybrids were compared to non-GM corn hybrids with similar genetics over the course of two studies conducted across five ecological regions in Mexico from 2009 to 2013.

A meta-analysis of the results found no difference between the GM and non-GM hybrids in early and final stand counts, the timing of silking and pollen drop, root lodging and stalk lodging. They did find significant differences in seedling vigor, ear height, plant height, grain moisture and yield, namely in the Bt hybrids. However, the scientists concluded none of the differences found pose an environmental or biological risk.

“Overall, results from the Experimental Phase studies are consistent with those from other world regions, confirming that there are no additional risks compared to conventional maize,” they concluded.




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