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当前位置: 首页 > 文章 > 干热河谷牛角瓜根茎叶的解剖结构 南方农业学报 2016,47 (2) 251-255
Position: Home > Articles > Anatomical structures of roots, stems and leaves of Calotropis gigantea in dry-hot valley Journal of Southern Agriculture 2016,47 (2) 251-255

干热河谷牛角瓜根茎叶的解剖结构

作  者：
唐军荣;葛娈;马焕成;刘惠民;郑元;罗明灿
单  位：
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
关键词：
牛角瓜;根、茎、叶解剖结构;适应干旱机理;干热河谷
摘  要：
【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。
译  名：
Anatomical structures of roots, stems and leaves of Calotropis gigantea in dry-hot valley
作  者：
TANG Jun-rong;GE Luan;MA Huan-cheng;LIU Hui-min;ZHENG Yuan;LUO Ming-can;Key Laboratory for Biodiversity Conservation of Southwest China,State Forestry Administration,Southwest Forestry University;
关键词：
C.gigantea;;anatomical structure of root,stem and leaf;;drought-resistant mechanism;;dry-hot vally
摘  要：
【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 pioneer to be planted and extended in the some sections of dry-hot valley difficult to restore vegetation.

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