The flower organs and fruit seed of loquat,Zhao Zhong No.6,were studied for their growth and development with the induction of 400 mg·L-1 GA3 and 20 mg·L-1 CPPU at different growth stages.The study was aimed to understand the mechanism involving the parthenocarpic development,as well as to determine the appropriate time for the induction.The results showed that 100.0% seedless rate was achieved when the induction took place in the flower budding stage,while 0% if the induction was done after anthesis or on ...