Increase of resistance to oxidative stress induced by methyl viologen in progeny from a cross between two transgenic Petunia Lines with NDPK and SOD genes

This study was conducted to investigate how to enhance resistance to oxidative stress in petunia progeny obtained by a crossing between transgenic plants, MnSOD (SOD2) (T4) and NDPK2 (T2), to develop transgenic petunia much more resistant to environmental stress. At the treatment of MV 200 μM, the progeny was significantly less damaged than its parental plants (SOD2- or NDPK2-transgenic lines) as well as wild type plants, implying its resistance to oxidative stress was enhanced compare to that of SOD2- or NDPK2- transgenic plants. In an expression of 11 quantitative traits, the progeny remained similar to control plants, although it infrequently displayed slightly longer or wider than either parental or wild type plants. In the expression of 6 qualitative traits, there was no significant difference between parental or non-transgenic control plants.