Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《JOURNAL OF GUANGXI AGRICULTURED AND BIOLOGICAL SCIENCE》 1999-02
Add to Favorite Get Latest Update

The Brief Report on First Discovery of Vessel in Cycads

Huang Yuyuan 1 Zhang Hongda(Chang Hungta) 2 (1 Agric. College,Guangxi Univ.,Nanning 530005;  
The specimens of pinna of Zamia furfuracea were isolated in nitric acidchrome acid solution and were observed under omnipotence microscope and electron microscope.It was discovered that there were vessels in the xylem. The vessels possessed 6 types. The annular vessel and spiral vessel were longer and the diameter less; the scalariform , pitted vessel etc. were shorter, but the diameter bigger,while the diameter of reticulated vessel were largest.The end walls were more acclivitous or level shape,some were attached with tail.There were simple perforation plate in annular and spiral vessel,while compound perforation plate in scalariform , reticulated and pitted vessel.This was also the first dicovery of vessel in Cycads.This discovery have very important significance in botanical field.
【Fund】: 国家自然科学基金 广东省自然科学基金
【CateGory Index】: Q941.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved