干热河谷牛角瓜根茎叶的解剖结构
【目的】解剖观察干热河谷地区牛角瓜根、茎及叶的结构,为干热河谷地区合理利用抗旱植物进行植被恢复提供参考依据。【方法】使用常规石蜡切片和光学显微技术解剖观察牛角瓜根、茎和叶结构,分析其适应干旱的机理。【结果】牛角瓜为典型耐旱性植物,其根解剖结构表现高度木质化,木质部面积占根面积的（18.16±10.77）%;茎表现高度肉质化,髓面积占茎面积的（34.21±2.79）%;叶片厚度580.01±6.14μm,叶片组织结构紧密度CTR（23.33±1.77）%。【结论】牛角瓜具有很强的抗旱能力,在干热河谷地区可作为植被恢复极端困难地段的先锋树种进行推广种植。...
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| Published in | 南方农业学报 Vol. 47; no. 2; pp. 251 - 255 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
西南林业大学/国家林业局西南地区生物多样性保育重点实验室,昆明,650224
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2095-1191 |
| DOI | 10.3969/j:issn.2095-1191.2016.02.251 |
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| Summary: | 【目的】解剖观察干热河谷地区牛角瓜根、茎及叶的结构,为干热河谷地区合理利用抗旱植物进行植被恢复提供参考依据。【方法】使用常规石蜡切片和光学显微技术解剖观察牛角瓜根、茎和叶结构,分析其适应干旱的机理。【结果】牛角瓜为典型耐旱性植物,其根解剖结构表现高度木质化,木质部面积占根面积的（18.16±10.77）%;茎表现高度肉质化,髓面积占茎面积的（34.21±2.79）%;叶片厚度580.01±6.14μm,叶片组织结构紧密度CTR（23.33±1.77）%。【结论】牛角瓜具有很强的抗旱能力,在干热河谷地区可作为植被恢复极端困难地段的先锋树种进行推广种植。 |
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| Bibliography: | 45-1381/S C.gigantea; anatomical structure of root; stem and leaf; drought-resistant mechanism; dry-hot vally Objective】The anatomical structures of roots, stems and leaves of Calotropis gigantea was studied, in order to provide reference for using drought-resistant plants to restore vegetation in dry-hot valley. 【Method】Using paraffin section method and optical microtechnique, the anatomical structures of roots, stems and leaves of C. gigantean were observed to analyze drought-resistant mechanism of C. gigantean. 【Result】The results showed that, C. gigantea was typical xerophytes; the anatomical structure of roots showed that root were heavily lignified, and xylem area accounted for 18.16±10.77% of root transection area; the anatomical structure of stems showed that stem was heavily succulent, and pith area accounted for（34.21±2.79）% of stem transection area; the thickness of leaf was 580.01±6.14 μm, and cell tense was（23.33±1.77）%. 【Conclusion】C. gigantea has strong drought resistance, which can be used as pi |
| ISSN: | 2095-1191 |
| DOI: | 10.3969/j:issn.2095-1191.2016.02.251 |