方竹属(竹亚科)叶片表皮微形态特征

中国科学院大学学报

方竹属(竹亚科)叶片表皮微形态特征

陈晓亚, 胡成华, 喻富根, 阮嘉蓬

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-05-18 发布日期:1993-05-18
通讯作者: 陈晓亚

Micromorphology of Leaf Epidermis of Chimonobambusa (Bambusoideae)

Chen Xiao-ya, Hu Cheng-hua, Yu Fu-geng, Ruan Ja-peng

Received:1900-01-01 Revised:1900-01-01 Online:1993-05-18 Published:1993-05-18
Contact: Chen Xiao-ya

摘要/Abstract

摘要：

用扫描电镜和光镜观察了方竹属27个发表种叶片表皮特征，结果支持广义方竹属、并将其分为

三个组的观点。叶表皮特征还对一些种的分与并、相互间亲缘关系以及它们在属内的系统位置提供了

新证据。乳突在气孔上方的特殊的拱状排列在竹亚科有重要的系统分类价值。

关键词: 方竹属, 竹亚科, 叶, 微形态

Abstract:

Micromorphological characters of leaf epidermis of 27 published species

of Chimonobambusa Makino were examined by both light and scanning electron

microscopes (Table 1). On the adaxial surface, bulliform cells are of irregular or

tetragonal shape and in 2-- 3 rows between veins; stomata rare. On the abaxial

surface, intercostal long cells are of thin and sinuous wall; short cells solitary,

paired, or 3 to several in a row on veins; silica bodies narrow tall or saddle

like; bicellular hairs common, with the basal cell slightly longer than or as long

as the distal cell; hooks elliptic and apiculate, common in some species and rare

in the others; papillae numerous, those overarching stomata showing different pat-

terns (Plates 1, 2). The examined species exhibit three types of leaf epidermis

(Table 2 ): 1, papillae widely spread, 4 rod- like papillae overarching the indi-

vidual stomata, hooks common, including all the six examined species of Sect.

Qiongzhuea and 9 species of Sect. Oreocalamus; 2, papillae around stomata

only (with the exception of C. microfloscula), the 4 papillae branched or curved,

plus several small ones, forming an arciform cover over the individual stomata,

hooks sparse, including 7 species of Sect. Oreocalamus and 1 species of Sect.

Chimonobambusa; 3, papillae overarching stomata intermediate between the other

two types, with the other characters similar to type 1, including 2 species of

Sect. Chimonobambusa and 2 species of Sect. Oreocalamus. The three types more

or less correspond to the current classification of the genus based on gross

morphology, but since Sect. Oreocalamus showed all the three types and type 3

was somewhat intermediate between the other two, present data support a broad

sense of the genus Chimonobambusa, and the three sections proposed by

Ohrnberger (1990) are to some extent acceptable. The results support the

removing of C. luzhiensis from Sect. Qiongzhuea, but reassignment of C.

metuoensis to Sect. Qiongzhuea cannot be confirmed. In addition, the leaf

epidermis is of diagnostic value at species level. The data support the inclusion of

C. linearifolia in C. angustifolia, but do not support that of C. rivularis in C.

lactistriata, nor of C. yunnanensis and C. tuberculata in C. armata (Ohrnberger,

1990). In fact, C. yunnanensis, C. tuberculata and C. lactistriata, in addition

to C. hirtinoda, are similar to C. qudrangularis in both leaf and gross

morphological characters; so is C. pachystachys to C. utilis, C. neopurpurea to

C. marmorea, and maybe C. rigidula to C. szechuanensis. They are possibly sis-

ter-species.or even conspecific, respectively.

The various specific papillate patterns are characteristic of bamboo taxa, and

investigation of wider samples will be of great interest in bamboo systematics.

Key words: Chimonobambusa, Bambusoideae, Leaf, Micromorphology

陈晓亚, 胡成华, 喻富根, 阮嘉蓬. 方竹属(竹亚科)叶片表皮微形态特征[J]. 中国科学院大学学报.

Chen Xiao-ya, Hu Cheng-hua, Yu Fu-geng, Ruan Ja-peng. Micromorphology of Leaf Epidermis of Chimonobambusa (Bambusoideae)[J]. .

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