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Anatomical observation and three-dimensional construction of leaf blades from six bamboos
SU Jialu, LIN Shuyan, SHI Wushuang, WANG Xing, ZHENG Xiao, WAN Yawen, DING Yulong
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (1) : 47-53.
PDF(2987 KB)
PDF(2987 KB)
Anatomical observation and three-dimensional construction of leaf blades from six bamboos
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【Objective】 To compare the differences in leaf structure and understand the three-dimensional images of the internal anatomical structures of six bamboo species/cultivars. 【Method】 The leaves of six bamboo species/cultivars were collected, including Indosasa hispida ‘Rainbow’, Sasaella glabra f. albostriata, Pleioblastus fortunei, Hibanobambusa tranquillans f. shiroshima, Sasaella kongosanensis ‘Aureostriatus’ and Sinobambusa tootsik var. luteoloalbostriata. For each species/cultivars, the leaf anatomical structures (transverse section: perpendicular to the transverse section of the midrib, longitudinal section: parallel to the longitudinal section of the midrib, and another section: parallel to the leaf epidermis) were obtained by paraffin sectioning and photographed under light microscopy. Then, the three-dimensional inner structures of the leaves were generated in Photoshop.【Result】 The epidermal system of the six bamboo species/cultivars was similarly structured. Most of the bulliform cells were arranged in 2-5 rows; and the short cells were concentrated near the vein area of the upper epidermis. However, there were significant differences in the basic structure of the leaf tissue system. The number of layers and the size of the mesophyll cells among the six bamboo species/cultivars were different, though the arrangement of the mesophyll cells was regular. There were two types of fusoid cells among the six species/cultivars: apoptotic and viable. The fusoid cells were apoptotic in the leaves ofIn. hispida ‘Rainbow’, most fusoid cells were apoptotic in the leaves of Pl. fortunei, H. tranquillans f. shiroshima and S. tootsik var. luteoloalbostriata, while few of the fusoid cells were apoptotic in the leaves of S. kongosanensis ‘Aureostriatus’ and S. glabra f. albostriata. The vascular system consists of the midrib, primary vein, secondary vein, and minor transverse veins. 【Conclusion】 The establishment of the three-dimensional structure of bamboo leaves helps us understand the internal structure better and provides us a reference for further classification and system evolution in bamboo.
ornamental bamboo / bamboo leaves / anatomical characteristics / three-dimensional structure
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