关键词: 仁用杏, 花芽, 转录组, 数字基因表达谱, 成花调控途径

Abstract: Experiment studied the pattern of related gene expression information around the sprouting period with flower buds of kernel apricot（Armeniaca vulgaris Lam.）‘Youyi’，applied the transcriptome and digital gene expression profiling technology. The results found that there were many kinds of exuberant biosynthesis and metabolic activity of kernel apricot flower buds around the sprouting period，and four flowering regulation pathways（photoperiod pathway，verbalization pathway，autonomous pathway and GA-dependent pathway）had already been started，and meantime，photoperiod pathway played a significant role，this process involves 74 genes of which 38 up-regulated expression and 29 down-regulated expression；GA-dependent pathway indicating a inhibiting effect in the sprouting periodfor controlling the development of flower buds，this process involves 38 genes of which 13 up-regulated expression and 9 down-regulated expression. Verbalization pathway and autonomous pathway were effected before the sprouting period. Verbalization pathway has 4 up-regulated expression genes and 15 down-regulated expression genes，autonomous pathway involves 24 genes of which 3 up-regulated expression and 11 down-regulated expression. By analyzing of digital gene expression，we have a preliminary understanding of network way about kernel apricot around the sprouting period，the information could provide theoretical basis for the research of flowering genes involved in kernel apricot blossom，exploring on the molecular mechanism of early blooming and breeding new varieties by molecular method.

Key words: kernel apricot, Armeniaca vulgaris, flower bud, transcriptome, digital gene expression profiling, flowering regulation pathway