Research of anatomical structure of leaf on Aogu wetland

• Main Authors: Yun-Ru Lai, 賴韻如
• Other Authors: 蔡智賢
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/87863826647617610188

碩士 === 國立嘉義大學 === 園藝學系研究所 === 98 === With wetlands divided into the saltwater wetland, the semi-saltwater wetland, and the freshwater wetland, Aogu Wetland which is categorized to a man-made wetland and located in a serious ground subsidence area along Taiwan’s coasts has the salinity in its soils between 5 and 30‰. In this study, the dissected structures of plant’s leaves collected at Aogu Wetland and National Chiayi University are observed with the paraffin sections which demonstrate (1) Leave thicknesses of Bischofia javanica, Passiflora suberosa, Dactyloctenium aegyptium, and Ipomoea carica grown at Aogu Wetland are thinner than those of plants grown at National Chiayi University; (2) Leave thicknesses of Terminalia catappa, Sapium sebiferum, Senna siamea, Tridax procumbens, Melia azedarach, Melaleuca leucadendron, Murraya paniculata, and Myoporum bontioides grown at Aogu Wetland are thicker than those of plants grown at National Chiayi University. The structures of plants taken as materials of the experiments can be analyzed in compliance with trichome, gland, secretory cavities, Kranz type, and number of bulliform cells which are described as follows. Trichome for plants grown at Aogu Wetland: (1) Unbranched multi-cellular trichome: Avicennia marina, Canavalia lineata, Macroptilium atropurpureus, Polygonum lanatum, Solanum nigrum, Sida rhombifolia, and Vigna marina; (2) Dendritic trichome: Abutilon indicum and Hibiscus tiliaceus; (3) Vesicular trichome: Atriplex nummularia. Gland structure: (1) Multi-cellular: Avicennia marina, Clerodendrum inerme, Ipomoea biflora, Ipomoea pes-caprae, Ipomoea triloba, Limonium sinense, and Pluchea indica; (2) Bi-cellular: maximum, Panicum repens, Imperata cylindrical, and Sporobolus virginicus. Schizogenous secretory cavities in mesophyll cells: Vigna marina and Ipomoea pes-caprae. Kranz Type: (1) Centrifugal: Imperata cylindrica, Paspalum vaginatum, Panicum maximum, and Brachiaria mutica; (2) Centripetal: Sporobolus virginicus and Panicum repens; (3) Amorphous: Chloris barbata. Number of bulliform cells: Imperata cylindrical (4~6); Chloris barbata, maximum, and Brachiaria mutica (3~4). The properties of multiple plants distributed at Aogu Wetland and National Chiayi University are further described as follows. Ttrichome: Cardiospermum halicacabum, Catharanthus roseus, Passiflora foetida, Passiflora suberosa, and Senna siamea (unbranched unicellular trichome); Eclipta prostrate, Lantana camara, Momordica charantia, and Tridax procumbens (unbranched multi-cellular trichome); Dactyloctenium aegyptium and Rhynchelytrum repens (prickle trichome). Gland structure: Lantana camara, Myoporum bontioides, Premna serratifolia, and Ipomoea carica (multi-cellular). Secretory cavities: Calophyllum inophyllum, Ipomoea carica, Melaleuca leucadendron (schizogenous); Murraya paniculata (lysigenous). Kranz type: Rhynchelytrum repens and Dactyloctenium aegyptium (centrifugal). Number of bulliform cells: Rhynchelytrum repens and Dactyloctenium aegyptium (3~4). In consideration of trichome or salt gland on some plants grown at Aogu Wetland such as Myoporum bontioides, Paspalum vaginatum, Sporobolus virginicus, Limonium sinense, Avicennia marina, Clerodendrum inerme, the trichome is capable of preventing a plant’s moisture from loss and reflecting sunlight, and the salt gland is characteristic of balancing a plant’s ions to resist heat, drought and salt stress. As materials used in experiments, the plants collected at Aogu Wetland and National Chiayi University have similar trichome, gland, secretory cavities, Kranz type, and number of bulliform cells which are favorable to better adaption of one plant in stress.