Molecular plant breeding: achievements in green biotechnology and future perspectives

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Abstract
Since one decade ago, transgenic crop plants are globally grown; in 2004, it was estimated to cover a total of 81 Mio ha in 17 countries. At present, four plant species (soybean, maize, cotton and rapeseed) dominate with two traits (herbicide tolerance and insect resistance). The traits on which research concentrates and the constructs which might come next onto the market are outlined. The procedure on how to clone such genes of interest, e.g. via map-based cloning, and some other helpful approaches of green biotechnology, like high throughput techniques and functional markers, are summarised, and a rough calculation about the market value of transgenic crops in US dollars is quoted.