南京林业大学学报(自然科学版) ›› 2005, Vol. 29 ›› Issue (01): 79-82.doi: 10.3969/j.jssn.1000-2006.2005.01.019

• 研究论文 • 上一篇    下一篇

杂交鹅掌楸木材解剖性质及其径向变异规律

潘彪1,徐朝阳1,王章荣2   

  1. 1. 南京林业大学木材工业学院, 江苏 南京 210037; 2. 南京林业大学森林资源与环境学院, 江苏 南京 210037
  • 出版日期:2005-02-18 发布日期:2005-02-18

Wood Anatomical Properties and Its Radial Variation of Liriodendron chinense×L. tulipi fera

PAN Biao1, XU Zhao-yang1, WANG Zhang-rong2   

  1. 1. College of Wood Science and Technology Nanjing Forestry University, Nanjing 210037, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
  • Online:2005-02-18 Published:2005-02-18

摘要: <正>采用随机区组设计研究了人工切割方式、植物生长调节剂种类和植物生长调节剂浓度3个因素对石蒜子球性状的影响。结果表明:(1)和自然分球相比,人工切SJ繁殖可明显提高石蒜子球的繁殖系数,其中切片扦插法可获得较多数量的子球。但子球较小;茎盘刳取法正好相反;茎盘沟切法和伤心法获得子球的数量和质量都较高,可推广使用;(2)ASL、IBA和NAA的混合液对石蒜子球数量的增加有促进作用,GA3、2,4D对石蒜子球的产生有明显的抑制作用;(3)以500mg/L的ASL+IBA十NAA的混合液处理效果最好,800mg/L的次之,1000mg/L的最差。

Abstract: The wood anatomical properties of 24-years-old hybrid tulip(Liriodendron chinense×L. tulipifera) trees were studied. The results show: the average number of vessels is 6 per mm2, the average diameter of vessels 57 μm,the average length of vessels 647/xm,the growth ring width 1. 72~11.93 mm, the fiber length 0.80~1.74 mm,the diameter of fiber 20.9~31.6~m,the thickness of single fiber wall 5.13~5.49μm,the ratio of fiber length to width 48.02~55.74, the ratio of double wall thickness to lumen 0. 57~0. 66, the microfibrillar angle of fiber 6.62~418.62~~The radial variationlaws of the hybrid tulip tree are as follows. The fiber length,width and ratio of fiber length to width fiber from pith to bark increase rapidly,tend to stabilization at the 9~11 year growth ring. The microfibrillar angle of fiber increases with the age of growth increment and reaches to the biggest at 7th year. The annual ring,tends to stabilization at the 11th year ring. The boundary between the juvenile and mature wood of the hybrid tulip tree is at the age of 9~11 years by the order cluster analysis to above anatomical properties. T-test indicated that there are significant differences between the anatomical properties of juvenile and mature wood.

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