Examination of flower initiation and development of Streptocarpus x hybridus

Effects of exogenously applied GA₄₊₇ on floral and vegetative development of Streptocarpus x hybridus were investigated. S. x hybridus 'Hybrid Delta' petiolode tissue from plants treated with 25 μg GA₄₊₇ were examined by scanning electron microscopy. Plants treated at 1 cm leaf lengths appeared unaffected by GA₄₊₇ one week after treatment while 2 and 3 cm GA-treated samples showed enhanced floral initiation.