| 巨龙竹竹材结构及其变异的解剖学研究 |
| |
| 引用本文： | 普晓兰,杜凡.巨龙竹竹材结构及其变异的解剖学研究[J].西南林学院学报,2003,23(1):1-5. |
| |
| 作者姓名： | 普晓兰 杜凡 |
| |
| 作者单位： | 1. 南京林业大学,森林资源与环境学院,江苏,南京,210037;西南林学院,资源学院,云南,昆明,650224
2. 西南林学院,资源学院,云南,昆明,650224 |
| |
| 基金项目： | 国家教委资助项目 ( 2 0 0 0 -19) |
| |
| 摘 要： | 对巨龙竹两种变异类型的秆茎结构进行了解剖学研究，对其维管束、导管、纤维的形态特征进行了定量显微观测和系统分析，结果为：巨龙竹的维管束为断腰型和双断腰型，双断腰型的维管束仅发生在茎秆的基部；维管束的长度为0．17～1．77mm，平均0．68mm；宽0．14～1．08mm，平均0．67mm；长宽比0．29～3．00，平均1．03；最大密度17．5个/mm^2，最小为1个／mm^2，平均5．98个／mm^2；在同一秆茎的不同高度(轴向)及同一高度的不同部位(径向)维管束的大小和分布各有不同；巨龙竹发生节间缩短的变异时，节间中的各项成分如导管、纤维等亦有缩短的趋势。
|
| 关 键 词： | 巨龙竹 竹材结构 维管束 导管 纤维 形态特征 解剖学 |
| 文章编号： | 1003-7179(2003)01-0001-05 |
| 修稿时间： | 2003年1月17日 |
Anatomical Studies on the Culm and Variation of Dendrocalamus sinicus |
| |
| PU Xiao-lan ,DU Fan.Anatomical Studies on the Culm and Variation of Dendrocalamus sinicus[J].Journal of Southwest Forestry College,2003,23(1):1-5. |
| |
| Authors: | PU Xiao-lan DU Fan |
| |
| Institution: | PU Xiao-lan 1,2,DU Fan 2 |
| |
| Abstract: | Anatomical studies were conducted on the culms of two types of Dendrocalamus sinicus .The Microscopic observation and Systematic analysis were made to investigate the morphology of the vascular bundles,vessels and fiber.The result showed:the vascular bundles of Dendrocalamus sinicus belonged to the type of broken type and double- broken type .The latter had a primitive character only at the base of culms.The length of vascular bundles varied from 0 17 to 1 77 mm, the average was 0 68 mm.Its width was 0 14 mm to 1 08 mm,and the average was 0 67mm.The ratio of length and width was 0 29 to 3 00,and the average was 1 03.The maximum number of vascular bundles per square millimeter across the bamboo culm wall was 17 5.The minimum one was 1,and the average was 5 98.The morphology of vascular bundles varied on the different positions of culm. The study on variation analysis of variance indicated that the axis way and across way of culms had higher influence on the vascular bundles morphology than that in ages.The length of vessels and fiber of Dendrocalamus sinicus became shorter when deformed internodes happened. |
| |
| Keywords: | Dendrocalamus sinicus vascular bundles variation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
