Potential Approaches for Gene Transfer between Transformed Wheat(Triticum aestivum) and It's Relative Weeds
Three potential approaches of gene transfer between transformed wheat with glufosinate resistant gene and it's relative weeds were studied by investigating the gene flow in the progeny of hybridization. Theoretically, the gene transfer has three approaches from transformed wheat to weeds by sexual transfer, which are: 1.from selfing F1, forming transgenic population mixed with tetraploids and aneuploids that will go on segregation on the resistance, 2.from the F1 to tetraploid weeds via spontaneous crossing, and 3. from the F1 pollinated by transgenic hexaploid wheat. In this paper, it was confirmed that there exists a potential risk of gene transfer between transformed wheat variety and it's relative weeds. On the sexual transfer approaches, the first route was most unlikely due to the sterile F1 hybrids. The other two approaches were main ways to transfer the gene to the relative weeds because the viable progeny of hybridization would become a bridge of gene flow between transformed wheat variety and weeds, and eventually create a new weed or “super weed”. To escape or mitigate the potential risk, creating multi resistant genes to prolong the use of transformed variety using biotechnology and taking management strategy to escape hybridization were suggested.