植物基因工程的发展迅速 first First Bt Herbicide resistant transgenic corn insect resistant plants plant plants commercialized 838485“86“878889906914929394959697989900“01“02 First field tests Rotting resistan tomato approved by fda Delay-ripening tomato Commercialized in the Us GM maize approved by eu‘83 ‘84 ‘85 ‘86 ‘87 ‘88 ‘89 ‘90 ‘91 ‘92 ‘93 ‘94 ‘95 ‘96 ‘97 ‘98 ‘99 ‘00 ‘01 ‘02 First transgenic plant Delay-ripening tomato Commercialized in the US First field tests Herbicide resistant, insect resistant plants commercialized GM maize approved by EU First Bt corn plants Rotting resistant tomato approved by FDA 植物基因工程的发展迅速