Overexpression of the WAPO-A1 gene increases the number of spikelets per spike in bread wheat oleh Lukas M. Wittern, Jose M. Barrero, William D. Bovill, Klara L. Verbyla, Trijntje Hughes, Steve M. Swain, Gareth Steed, Alex A. R. Webb, Keith Gardner, Andy Greenland, John Jacobs, Claus Frohberg, Ralf-Christian Schmidt, Colin Cavanagh, Antje Rohde, Mark W. Davey, Matthew A. Hannah