中国甘蔗亚族(禾本科)的分类修订
刘艳春
学位类型博士
导师彭华
2010-05
学位授予单位中国科学院研究生院
学位专业植物学
摘要甘蔗亚族(Saccharinae Kuntze)属于禾本科的黍亚科(Panicoideae)须芒草族(Andropogoneae Dumort.),全世界大约有156个种,其中中国66种。中国的甘蔗亚族植物主要分布在西南部;其次是华南、长江中下游;西北、华北和东北种类最少。甘蔗亚族植物在工农业方面具有众多用途和价值,亦是近现代世界各地能源开发研究的热点植物。该亚族在研究历史中遗留的问题较多,存在属的概念大小差异以及种间界限不清的问题,本研究通过野外考察、文献研究、查阅和借阅了国内外17个标本馆的3998号7069份甘蔗亚族植物标本和照片的基础上,结合大量叶片解剖学工作以及性状统计分析等研究,得出主要结论如下:属间:1. 假金发草属(Pseudopogonatherum)与黄金茅属(Eulalia)在外部形态特征以及叶表皮和叶横切特征上均差异较大,两者理应各自独立成属。这同S. L. Chen的叶表皮研究初步结论以及Bor等更早的形态判断较为一致;2. 红山茅属(Rubimons)、双药芒属(Diandranthus)、荻属(Triarrhena)和芒属(Miscanthus)的叶解剖特征和外部形态特征基本一致,前三属均应并入芒属。同时,红山茅类群在叶解剖和外形特征上又与芒属其它种类稍有不同,且结合最近在云南西南部发现与红山茅关系较为接近的另1新种,我们新成立了红山茅亚属Miscanthus subgen. Rubimons Y. C. Liu et H. Peng。3. 蔗茅属(Erianthus)、河八王属(Narenga)与甘蔗属(Saccharum)在叶解剖各方面特征上均较划一,且3者外部形态特征也较为相似,故我们赞同Clayton等的初步推断以及后来Flora of China的观点,即蔗茅属、河八王属应并入甘蔗属(Saccharum s. l.)。4. 油芒属(Eccoilopus)和大油芒属(Spodiopogon)两者在叶解剖特征方面相似,两者的外部形态特征也无明显差别,前者应作为异名并入后者,这与Genera Graminum、《云南植物志》以及Flora of China中的分类处理一致。种间:1. 我们通过对网脉莠竹和柔枝莠竹、紫芒和芒,以及毛颍斑茅和斑茅的关键特征变异统计和性状分析研究,认为网脉莠竹应作为异名并入柔枝莠竹、紫芒并入芒、毛颍斑茅并入斑茅;2. 国内鉴定为二色金茅(Eulalia siamensis)和滇南金茅(E. wightii)的标本实际为四脉金茅(E. quadrinervis),而鉴定为白原变种茅(Imperata cylindrica var. cylindrica)的标本实际为大白茅(I. cylindrica var. major),二色金茅、滇南金茅以及白茅原变种在中国并无分布不在中国分布;3. 国内各标本馆长期将刚莠竹与蔓生莠竹混淆,刚莠竹实际以第一颖披针形,第二颖先端渐尖,延伸成0.3~3 mm 长的芒尖,第二外桴披针形,芒细弱如发丝,芒柱不明显,芒长1-2 cm等特征与后者相区别。4. 发表两个新种:Miscanthus villosus Y. C. Liu et H. Peng, sp. nov.和Microstegium butuoense Y. C. Liu et H. Peng, sp. nov.
资助项目Subtrib. Saccharinae Kuntze belongs to the tribe Andropogoneae, subfamily Panicoideae, Poaceae. There are about 156 species in the world, with 66 species occurring in China. They are distributed throughout China, mostly in the Provinces of the south and southwest. They are especially abundant in the mid and lower reaches of the Changjiang and its tributaries. A few species extend to northern China. Saccharinae grasses are usually tall, with many species being cultivated as agricultural crop plants and others possessing commercial value. In many parts of the world, selected species are currently undergoing trials as potential target plants for the exploitation of new energy sources. However, there are many taxonomic problems remaining within Saccharinae and historic studies are both incomplete and inconclusive. Problems exist and opinions differ on the systematic positioning of several genera and species. Conclusions which led to this taxonomic revision utilized the following tools and methods: field works; literature research; the study of 7069 specimens and photos from 17 herbaria; leaf anatomical experiments; analysis of the morphological characters (using statistic methodology).Generic revisions:1. Pseudopogonatherum and Eulalia are quite different in their morphology, leaf epidermis and transverse characteristics. They should be treated as two separate genera. This is consistent with the earlier opinions of Bor and S. L. Chen.2. The leaf anatomical structures and morphological characteristics in Diandranthus, Miscanthus, Triarrhena and Rubimons are almost all the same except for a few differences which exist in Rubimons. According to the result, Diandranthus, Triarrhena and Rubimons should be included in to Miscanthus as described in The Flora of China, but the subgenus Miscanthus subgen. Rubimons (B. S. Sun) Y. C. Liu et H. Peng is usefully aligned to the distinct Rubimons taxa.3. The leaf anatomical structures of Saccharum, Erianthus and Narenga show significant similarity. We agree with Clayton’s suggestion that Erianthus and Narenga should be included into Saccharum.4. The study result of leaf anatomy and morphology in Eccoilopus and Spodiopogon indicate that Eccoilopus should be included with Spodiopogon which agrees with the taxonomic treatment in Genera Graminum, Flora Yunnanica and Flora of China.On Species:1. According to the statistical research and characteristics comparison, we conclude that Microstegium reticulatum should be treated as a synonym of Microstegium vimineum; Miscanthus purpurascence should be included with Miscanthus sinensis; Saccharum arundinaceum var. trichophyllum is simply an extreme variation of Saccharum arundinaceum, and should be treated as a synonym of the latter.2. Specimens labeled as Eulalia siamensis and Eulalia wightii in Chinese herbaria are actually specimens of Eulalia quadrinervis, and specimens labeled as Imperata cylindrica var. cylindrica are in fact specimens of Imperata cylindrica var. major, which means that Eulalia siamensis, Eulalia wightii and Imperata cylindrica var. cylindrica do not occur in China.3. The specimens of Microstegium fasciculatum in Chinese herbaria have long been identified as Microstegium ciliatum. And the descriptions in Flora illustralis Plantarum Primarium Sinicarum Poaceae, Flora Reipublicae Popularis Sinicae Tomus 10(2) and Flora Yunnanica Tomus 9 were wrong in some key details. The correct description of Microstegium ciliatum is available in Flora of China Vol. 22.4. Two new species are found: Miscanthus villosus Y. C. Liu et H. Peng Sp. Nov. and Microstegium butuoense Y. C. Liu et H. Peng Sp. Nov.
语种中文
文献类型学位论文
条目标识符http://ir.kib.ac.cn/handle/151853/16070
专题昆明植物所硕博研究生毕业学位论文
推荐引用方式
GB/T 7714
刘艳春. 中国甘蔗亚族(禾本科)的分类修订[D]. 中国科学院研究生院,2010.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
刘艳春.pdf(423KB) 限制开放--请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[刘艳春]的文章
百度学术
百度学术中相似的文章
[刘艳春]的文章
必应学术
必应学术中相似的文章
[刘艳春]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。