Flowers were emasculated (removal of petals and anthers) 2 days before expected date of anthesis to avoid selfpollination. Using a spatula, the stigma of an emasculated flower was covered with lanolin paste at anthesis (day 0), mixed with water (1:1), without (control) or with hormone
[dissolved in water or methanol (PCB) and mixed with heated lanolin (100 C), stirred to a homogeneous paste, and cooled to room temperature].