5种红树植物的叶片结构及其抗逆性比较

摘要

研究了采自广东徐闻海岸滩涂的5种红树植物（红海榄（ Rhizophora stylosa）、角果木（ Ceriops tagal）、白骨壤（ Avicennia marina）、桐花树（ Aegiceras corniculatum）和榄李（ Lumnitzera littorea））的叶片解剖结构，利用模糊隶属函数值法综合评价其抗逆性。结果表明：5种红树植物的叶片形成了适应海岸潮间带生境的结构，即具下生气孔，气孔密度较小；叶片和角质层较厚；形成下皮；栅栏组织细胞多层；富含单宁。种间抗逆性综合评价结果由大到小排序为白骨壤、桐花树、红海榄、榄李、角果木。%We used five mangrove species leaves of Rhizophora stylosa, Ceriops tagal, Avicennia marina, Aegiceras corniculatum and Lumnitzera il ttorea, collected from Xuwen , Guandong , to study their leaf structural features and evaluate the stress re-sistances by subordinate function value analysis .Five species were adapted to aquatic environment in structure with stomata distributed in lower epidermis , lower stomatal density and thicker cuticle .The tannin content was high in the leaf blade .By subordinate function value analysis , the stress resistance capabilities of the five mangrove species were in order of Avicennia marina>Aegiceras corniuc laut m>Rhiz ophora stylosa>Lumnti zera littorea>Ceriops tagal.