箣竹属和牡竹属(竹亚科)叶表皮微形态特征

Micromorphological Study on Leaf Epidermis of Bambusa and Dendrocalamus (Poaceae:Bambusoideae)

摘要:

利用光学显微镜和扫描电镜,对箣竹属21个种(包括箣竹亚属5个种、孝顺竹亚属2种、单竹亚属4种、绿竹亚属9种和亚属未定1种)以及牡竹属5种叶表皮微形态特征进行了观察和研究。所得结果表明气孔保卫细胞上乳突的数目和分布存在一定的规律,并具有一定的分类价值。绿竹亚属的叶表皮微形态特征界于箣竹属和牡竹属之间,但更接近于箣竹属。因此认为在分类处理上,将绿竹亚属置于箣竹属比单独成立绿竹属更为合理。

Abstract:

Micromorphological characteristics of lcaf epidemfis of 26 species of bamboos (Bmnbusa subgen. Dendrocalamopsis,9 species；subgen Bmnbusa，5 species；subgen Leleba．2 species；subgen．Lingrwmia, 4 species；subgenus uncertain，I species；Dendrocalamnus．5 species) were observed under SEM and LM．The results showed that the number and distribution of papillae in subsidiary cells of the stomata existed to some extent regular patterns which could be applied in the bamboo taxonomy Micromorphological characters of leaf epiderimis indicate that Bambusa subgen． Dendrocalamopsis is intermediate between genera Barnbusa and Dendrocalamus showing similarities to both ofthem ，but is closer to genus Bambusa. So it is more reasonable to treat Dendrocalampsis as a subgenus of Bambusa than as a separate genus.