黄藤材发育过程中维管束的变化

为提高我国棕榈藤资源培育和高附加值加工利用水平,以我国特有的黄藤为研究对象,采用生物解剖学方法,系统分析了黄藤茎中维管束比量及形态特征与其生长发育规律的关系。研究结果表明,轴向上维管束比量在36.2%~42.4%,由藤茎基部向上随着高度的增加先上升,至中部后又下降;径向由内向外基本呈增大的变化趋势,维管束比量平均值为40.2%。轴向上维管束长径和短径分别在0.341~0.526 mm和0.255~0.400 mm范围内,由藤茎基部向上随着高度的增加逐渐下降,径向由内到外基本呈逐渐下降的变化趋势,维管束长径、短径平均值分别为468.933μm、333.838μm;形状因子平均为0.722。维管束密度在轴向由藤茎基部向上随着高度的增加逐渐增大,径向由内到外总体上呈逐渐增加的变化趋势,平均值为5.63个.mm-2。

Vascular Bundle Variation in the Growth of Daemonorops margaritae

In order to improve the levels of cultivation and high value-added process and utilization of Chinese rattan resources,the Daemonorops margaritae,an unique rattan in China was choosed as the research material,and the relationships between the vascular bundle proportion and characteristics,and the growth and development were also analyzed systematically with the biological anatomic technique.The results showed that the vascular bundle proportion varies from 36.2% to 42.4%,and increaseed firstly from base to ...