机构地区: 中国科学院兰州沙漠研究所
出 处: 《西北植物学报》 1997年第4期478-482,共5页
摘 要: 对国产骆驼蓬属3种7个地方居群的营养器官内部构造作了对比观察。结果表明:该属植物具有明显的旱生结构,主要特点为:根周皮发达;轴器官中有同心性异型维管束;茎叶肉质,内有发达的贮水组织,叶栅栏组织发达,呈环栅型、叶片表面积与体积之比较小;茎的皮层、髓部及叶肉组织有大量含晶细胞。 Studies have indicated that Peganum possesses very striking xeromorphic structures,for example,roots possesses developed periderm,more than 2 rings of anomalousvascular bundles exsite in axis organs,with crystal cells and water storage tissues,theleaves belong to ring-palisade in structure and palisade tissues are well developed. It issuggested that these structural characters might have important ecological value to adaptxeric habitat.
领 域: [生物学]