Currently scientists are working on successfully identifying the tomato genome. With the genome it is believed that it will be possible to target genes that control flavour separately from those that control ripening, making a tomato available that can last longer while still achieving a dark red colour and be tastier. In the past alterations have been made to tomatoes, but at the expense of flavour and colour (for example, the non-ripening mutant gene). Although in the early 1990s a genetically modified tomato was introduced into society, which wasn’t hugely supported, scientists believe this time will have a different outcome, even if it is just in changing the way tomatoes are breed. However, even with a tastier tomato that will last longer, the concern of scientist being able to change the genetic make-up of fruit is brought forth.
http://www.bbc.co.uk/news/science-environment-18253577