Taxonomic studies of the Diplazium mettenianum complex (Woodsiaceae: Pteridophyta) in Japan:: Morphology, cytology and taxonomy of plants with normal-shaped spores
Taxonomic studies of the Diplazium mettenianum complex (Woodsiaceae: Pteridophyta) in Japan:: Morphology, cytology and taxonomy of plants with normal-shaped spores
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DOI：
10.1007/pl00013860
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发表时间：
1999-03-01
影响因子：
2.8
通讯作者：
Takamiya, M
中科院分区：
文献类型：
--
作者：
Ohta, N;Takamiya, M
对374株日本mettenium复合体进行了形态学和细胞学研究，其中包括2个多态种D. mettenium和D. griffithii，在62个地点采集了正常形态的孢子。对20个定性形态特征的分析表明，该复合体可分为5种形态。通过对16个数量形态特征的统计分析，支持了5个独立种的差异：D. mettenium， D. fauriei， D. decidum nomo。对150株植物的细胞学研究表明，在一个fauriei种群中，deciduum和植株均为性六倍体（2n=6x=246=123II），其余均为性四倍体（2n=4x=164=82II）。
Morphological and cytological investigations were carried out on 374 plants of the Japanese Diplazium mettenianum complex, including two polymorphic species D. mettenianum and D. griffithii, with normal-shaped spores collected from 62 sites. An analysis of 20 qualitative morphological characters showed that the complex can be divided into five forms. A statistical analysis of 16 quantitative morphological characters supported the distinctness of five forms which are regarded as independent species: D. mettenianum, D. fauriei, D. deciduum nom. nov. (=D. mettenianum var, tenuifolium), D. griffithii, and D. hayatamae sp. nov. A cytological study on 150 plants showed that D. deciduum and plants in a single population of D. fauriei are sexual hexaploids (2n=6x=246=123II), and ail others are sexual tetraploids (2n=4x=164=82II).