观苞植物是观赏植物中重要而又庞大的一类，红掌作为目前国内外重要的盆栽、切花植物，是观苞花卉的典型代表。然而，人们对于其苞片形成的分子机理还知之甚少，对控制其各种观赏性状形成的基因类型缺乏研究。本研究以抑制消减杂交结合基因芯片技术为手段，构建发育初期苞片对叶片、苞片对花序的正反向差减文库，对红掌苞片中的差异表达基因进行分离和鉴定，通过生物信息学软件分析差异表达基因参与的生物过程，预测其可能的生物功能，然后筛选部分关键基因，获得其cDNA全长和基因组组成信息，重点研究其时空表达情况，结合荧光定量PCR和亚细胞定位等明确其表达模式，最后综合分析发育初期苞片中的差异表达基因对其形态形成的影响，揭示红掌苞片发育初期的基因表达情况，为今后通过分子手段改良红掌苞片的数量、形态、色彩等观赏性状提供理论基础和基因资源。

Bract plants are important and vast class in the ornamental plants. Anthurium andraeanum, as an important potted flower whether in domestic or abroad, is a typical view. However, bracts forming molecular mechanism is still poorly understood, and there is few study about which genes control the various ornamental traits. This study uses suppression subtractive hybridization coupled with gene chip technology to construct forward and backward subtracted libraries of bract versus leaf and bract versus inflorescence among early development stage, then isolated and identified differentially expressed genes of bract. Afterwards, we analyze the differential expression of genes involved in biological processes through bioinformatics software, forecasting the possible biological function. By screening part of key genes to obtain the full length cDNA and genome composition information. The key work is focusing on the spatial and temporal expression, combined with fluorescence quantitative PCR and subcellular localization. Finally, we can reveal the gene expression patterns at its early stage through comprehensively analyzing the above results, and our work will do provide a theoretical basis and gene resources for improving bract quantity, morphology, color and other ornamental traits.