Scientists in the US have engineered tobacco plants that can grow up to 40% larger than normal in field trials.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/genetically-modified-shortcut-boosts-plant-growth-40
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/bbc-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/genetic-engineering
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agricultural-research
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tobacco
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/scientists