中文摘要：

树木生长发育过程具有明显的幼年期和成年期,只有成年期树木才能启动生殖生长,因此研究树木从幼年期到成年期转变过程中的发育变化规律,对于阐明树木生殖发育机制和促进树木生殖输出等都具有重要意义。树木由幼年期向成年期转换过程中,形态特征和超微结构、生理生化指标、转录因子和miRNA调节、DNA甲基化水平以及端粒长短等方面发生了明显变化,本文综合国内外有关树木阶段发育的相关研究进展,对树木从幼年向成年转变过程中的发育和调控机制进行综述。

英文摘要：

Development of woody plants has distinct two phases,juvenile and adult.Only adult phase can initiate the reproductive production.Thus,analysis the phase changes of juvenile to adult transition can provide insights into the mechanism of reproductive development and output in woody plants.During the juvenile to adult transition,some changes occur in morphological and ultrastructural characteristics,physiological and biochemical properties,transcription factors and miRNA regulatory,DNA methylation level and telomere length.In this review,we summarized recent advances to illustrate the developmental and regulatory mechanisms during the transition of juvenility to adult in woody plants.