草业学报Issue(7)：139-145,7.DOI:10.11686/cyxb2014246
天胡荽的解剖和屏障结构特征研究
A study of anatomical structure and apoplastic barrier characteristics of Hydrocotyle sibthorpioides
摘要
Abstract
The anatomy and histochemistry of Hydrocotyle sibthorpioides were investigated under light and flu-orescence microscopy in this research.The findings were:1)The adventitious root of H .sibthorpioides con-sisted of proto-xylem and proto-phloem,superceded by diarch primary vasculature of metaxymlem and metaph-loem,surrounded by endodermis,then cortex,exodermis and epidermis.2)Stolon,pedicel and leaf were pri-mary structures with epidermis,collenchyma,cortex,endodermis,vascular bundle and pith,except that vas-culature of the stolon and pedicel had secondary structures,and stolon had induced aerenchyma.3 )The ap-oplastic barriers in adventitious roots of H .sibthorpioides included the inner layers of endodermis with Caspar-ian bands and suberin,the outer layers of exodermis with Casparian bands and suberin and the epidermis with suberin.The stolons,pedicels and petioles had similar apoplastic barriers,including the inner layer of endoder-mis with Casparian bands and suberin,and the outer layer of the cuticle,but the endodermis had no suberin in pedicels and petioles;leaf blades had only a cuticular apoplastic barrier.4)The anatomical structure and ap-oplastic barrier characters are important structural determinants of adaptation of H .sibthorpioides to variably-moist environments.The implications of this research for selection of plant species to restore degraded wet-lands are discussed.关键词
天胡荽/解剖结构/质外体屏障结构/组织化学/初生结构Key words
Hydrocotyle sibthorpioides/anatomy/apoplastic barriers/histochemistry/primary structure引用本文复制引用
杨朝东,李守峰,姚兰,艾训儒,蔡小东,张霞..天胡荽的解剖和屏障结构特征研究[J].草业学报,2015,(7):139-145,7.基金项目
湖北省教育厅项目（Q2014310）资助。 （）
