被子植物的花由花分生组织(又称花原基)形成。
In angiosperms, after the floral transition, the inflorescence meristem produces floral meristems (FMs).
花的被片比雄蕊发育的要早，均由花原基发育而成。
The tepals were developed earlier than the stamens, both from the floret primordium.
结果显示花原基分化和开花的起始节位是第一真叶节；
The results showed that the differentiation of floral primordium and flower firstly occurred at the axil of the first leaf.
侧花的分化始于中花的花瓣及雄蕊原基分化期。
When the middle flower was already at the petal-stamen primordium stage, the side flowers started to differentiate.
花的各部分均发育正常，花瓣原基和雄蕊原基同源；
Various parts of the proterogynous flower developed normally. The petal and stamen primordia were homologous.
花的各部分均发育正常，花瓣原基和雄蕊原基同源；
Various parts of the proterogynous flower developed normally. The petal and stamen primordia were homologous.
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