| 1. | Anatomy of the vessel elements and perforation plates in the secondary xylem of casuarina cunninghamiana 细枝木麻黄导管分子及穿孔板解剖学研究 |
| 2. | Vessels solitary with angular outline ; perforation plates scalariform ; intervessel pits and vessel - ray pitting alternate to scalariform ; helical thickenings only in vessel elements tails 导管横切面为多角形,单管孔,散生。螺纹加厚仅出现导管分子尾端。梯状穿孔为主。 |
| 3. | Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates reticulate and scalariform ; intervessel pits and vessel - ray pitting alternate ; helical thickenings throughout body of vessel elements 单管孔,散生;整个导管分子上具螺纹加厚。网状和梯状穿孔。 |
| 4. | Wood semi - ring - porous ; vessels solitary with angular outline ; perforation plates scalariform ; intervessel pits and vessel - ray pitting opposite or opposite to scalarifonn ; helical thickenings in vessel elements present 梯状穿孔板;管间纹孔式为互列;射线导管间纹孔式多对列,类似导管面间纹孔式。 |
| 5. | The result shows that there are various patterns of vessel elements and three types of perforation plates : both ends of the vessel element are simple perforation plate ; one end with simple perforation , the other with two simple perforations ; one end with two simple perforations , the other with three simple perforations 在荔枝的次生木质部中导管分子存在着多种的样式,并且导管分子穿孔板存在着3种类型:两端均为一个单穿孔板;一端一个单穿孔板另一端两个单穿孔板;一端两个单穿孔板另一端三个单穿孔板。 |
| 6. | It was shown that vessel elements in secondary xylem of p . emblica have many different forms and most of them have tails and their perforation plates divide into two types : ( 1 ) there is one simple perforation plate at each end of the vessel elements and ( 2 ) there is one simple perforation plate at one end of the vessel elements and two simple perforation plate at the other end ; ( 3 ) a few vessel elements have special inclusions ; ( 4 ) the intervascular pits are alternate pits ; ( 5 ) the pits between the vessels and rays are mixed pits , pits with transverse gashes and scalariform pits 结果发现,余甘子次生木质部导管分子中存在着许多不同的样式,导管分子大多数具尾;其穿孔板存在着两种类型: ( 1 )两端均为1个单穿孔板; ( 2 )一端为1个单穿孔板;另一端为2个单穿孔板; ( 3 )极少数的导管分子具有特殊的内含物; ( 4 )管间纹孔式为互列纹孔式; ( 5 )导管射线间纹孔式为混合型纹孔与横列刻痕状纹孔以及梯状穿孔。 |