The growth and development of donorplant was effected on floral bud formation intobacco epidermis thin-layer culture of dif-ferent organ. All parts of the stem epidermis didn't di-fferentiate to floral bud in vegetative stage ofthe donor plant.When plant vegetative stagetransferred to various reproductive stages (iebolting,budding,blooming and setting seeds),the frequency of floral bud emergence wasdifferent in various parts of main stem,dur-ing the stage of floral budding,the floralbuds were only different...