The author Observed the entire process on the morphological flower bud differentiation for cultivars of tree peony. The result expressed that all of buds of tree peony are mixed buds, but all of them are going to be formed as flower buds at Certain. Stage during growth and develo-pment. Morphological flower bud differentiation starts from the first ten-day to twenty-day period of June and ends from the latter ten-day of September to the middle of October.
The transformation of Carpels and Stamens i...