| 马占相思的树龄和倍性对纤维性状的影响 |
| |
| 引用本文： | 王学文,崔克明.马占相思的树龄和倍性对纤维性状的影响[J].林业科学,2000,36(1):125-130. |
| |
| 作者姓名： | 王学文 崔克明 |
| |
| 作者单位： | 北京大学生命科学学院,北京,100871 |
| |
| 基金项目： | 国家自然科学基金!（39570583 ）和（39770487） |
| |
| 摘 要： | 近年来关于树龄对木材结构影响的研究越来越多，主要集中于研究年轮代表的树龄对木材结构的影响，并运用于林业的早期选育，但很少涉及纵向树龄和维管组织所反应的树龄（管宁，１９９６；姜笑梅，１９９７；刘元，１９９７；马灵飞，１９９７；Ｆａｈｎ，１９９０；崔克明，１９９２；１９９３；１９９５；１９９７；Ｂａｓｓ，１９８４；曾其蕴，１９９０；Ｄｏｎａｌｄｓｏｎ，１９９６）。马占相思（ＡｃａｃｉａｍａｎｇｉｕｍＷｉｌｌｄ．）是含羞草科（Ｍｉｍｏｓａｃｅａｅ）金合欢属（Ａｃａｃｉａ）中生长较快的一个种（Ｇｏｎｚａ…
|
| 关 键 词： | 马占相思 四倍体 树龄 纤维性状 木材结构 |
| 修稿时间： | 1998-08-14 |
THE EFFECTS OF AGE AND MULTIPLOIDY ON FIBER CHARACTERISTICS IN ACACIA MAGIUM |
| |
| Wang Xuewen,Cui Keming.THE EFFECTS OF AGE AND MULTIPLOIDY ON FIBER CHARACTERISTICS IN ACACIA MAGIUM[J].Scientia Silvae Sinicae,2000,36(1):125-130. |
| |
| Authors: | Wang Xuewen Cui Keming |
| |
| Abstract: | Acacia mangium Willd. is an economic species for pulp and paper industry. The growth of the young tetraploid A.mangium trees was more superior than that of the diploid trees. The present study deals with the effects of age and multiploidy on fiber characteristics in tetraploid and diploid species. They were compared and analysed using Franklin's method with hydrogen peroxide and glacial acetic acid treatment, the data were analysed from micromeasurements. With age increment, the fiber length in the diploid trees increased significantly( p<0 01). Similarly, the fiber length measured in the same year also showed decrease from bottom upward along with the growth of the shoot height. The tetraploid wood fibers were also compared and analysed with the diploid fibers. In the 1\|year\|old shoots, the tetraploid fiber was significantly longer than the diploid's ( p<0 01 ), Whereas the Cw/Cav (ratio of the thickness of cell wall and the cavity of cell)of the tetraploid fibers was significantly smaller than that of the diploid's( p<0 01 ). Moreover, regardless of the age, in the main leaf veins the tetraploid fiber length was, similar to that in the wood, sinificantly longer than that of the diploid's, and the Cw/Cav was also significantly smaller. It is thus suggested that the fiber characteristics measured in the main leaf veins, which is a much easy and safe procedure, could possibly be expected to obtain the same results in adult wood. |
| |
| Keywords: | Acacia mangium willd Tetraploid Main veins Tree age Cambium Fiber |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
