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本文利用光学显微镜及计算机图像分析系统研究了广西产4种竹材马蹄竹、撑篙竹、车简竹、越南巨竹的解剖性质,其中包括表皮层、副表皮层、皮层、维管束、纤维、基本薄壁组织以及髓环等组织的结构特征。结果表明:4种竹秆的表皮细胞均为一层,副表皮细胞1-2层,竹秆横切面上维管束在单位面积内的数目以撑篙竹最多,平均为4.08个/mm2,车简竹最少为2.01个/mm2。导管直径由竹秆壁外侧向内逐渐增大,导管长度以竹秆壁中部最大,导管壁厚由竹秆壁外侧向内逐渐增大。纤维平均长度以越南巨竹最长,平均为 2. 72mm;纤维直径和壁厚最大,分别是撑篙竹(平均为15.68μm)和马蹄竹(平均为6.72μm)。竹秆壁中输导组织所占比例以中部最多,如撑篙竹高达12.1%;纤维组织在竹秆壁外侧最多,撑篙竹为64.39%。薄壁组织则以竹秆壁的中部和内侧较多,其中越南巨竹的薄壁组织以中部和内侧最多,分别占59.7%和74.7%,撑篙竹髓环细胞不特化为石细胞,马蹄竹髓环特化不明显,其余两种髓环细胞则高度特化。上述4种竹材的解剖特征与其物理机械特性及加工性质等均有密切关系,可为其开发利用提供重要依据。
In this paper, the anatomical properties of four species of Cynanchum urophylla, Stipa chinensis, Chinense bamboo and Phyllostachys chinensis in Guangxi were investigated by light microscopy and computer image analysis system, including epidermis, epidermis, cortex, vascular bundle, fiber, The basic parenchyma and the structural features of the pulp ring and other tissues. The results showed that the epidermal cells of one of the four kinds of bamboo stalks had a single layer and the number of the secondary epidermal cells was 1-2. The number of vascular bundles in the transverse section of bamboo stalk was the largest in the unit area, with an average of 4.08 / mm 2 , Car bamboo minimum of at least 2.01 / mm2. The diameter of the catheter gradually increases from the outer side of the bamboo stalk wall to the inner side of the bamboo stalk wall. The length of the catheter wall gradually increases from the outer side of the bamboo stalk wall inwardly. The average fiber length to the longest Vietnamese giant bamboo, with an average of 2. 72mm; the diameter of the fiber and the wall thickness were the largest, which were Stipa bungei (average 15.68μm) and Himalayan bamboo (average 6.72μm). The proportion of guiding tissue in the bamboo stalk wall is the highest in the middle, for example up to 12.1% in the stumpage bamboo; the fibrous tissue is the most outside in the stalk wall, and the stalk bamboo is 64.39%. The parenchyma in the middle of the bamboo wall and the medial more, in which the giant parenchyma of Vietnam to the central and medial most, accounting for 59.7% and 74.7%, respectively, For the stone cells, horseshoe bamboo ring specialization is not obvious, the remaining two kinds of myelinated cells are highly specialized. The four kinds of bamboo anatomical characteristics of its physical and mechanical properties and processing properties are closely related to its development and utilization can provide an important basis.