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中国三种水韭属植物的地理分布与生境特征
水韭 濒危植物 自然分布状况 保护
2009/9/9
水韭属（Isoetes）是水韭科中的孑遗属，分类上属拟蕨类，对研究蕨类植物的系统演化具有重要价值。由于人类活动对其水生生境的破坏，水韭属植物在我国的分布范围及其种群数量日趋减少，濒临灭绝，其中，高寒水韭(I. hypsophila)、云贵水韭(I. yunguiensis)和中华水韭(I. sinensis)已被列为国家一级重点保护野生植物。对原产中国的3种水韭的地理分布与生境特征进行调查，将为合...
Eastern Asian endemic seed plant genera and their paleogeographic history throughout the Northern Hemisphere
Cretaceous eastern Asia endemic paleobotany phytogeography Tertiary
2009/8/4
We review the fossil history of seed plant genera that are now endemic to eastern Asia. Although the majority of eastern Asian endemic genera have no known fossil record at all, 54 genera, or about 9%...
Paranepheliinae亚族(菊科, Liabeae族)的系统发育和可能的属间杂交
Andes Asteraceae biogeography hybridization ITS sequences Liabeae Paranepheliinae Peru speciation trnL-trnF
2009/8/4
The nuclear ribosomal ITS region and the chloroplast trnL-trnF (trnLF) intergenic region were sequenced for 45 accessions of Paranephelius and six accessions of Pseudonoseris, the two genera of the su...
Phylogenetics and biogeography of eastern Asian-North American disjunct genus Pachysandra (Buxaceae) inferred from nucleotide sequences
Autopolyploid Buxaceae divergence time ndhF nrDNA ITS Pachysandra
2009/8/4
Pachysandra is an eastern Asian-North American disjunct genus with three species, two in eastern Asia (P. axillaris and P. terminalis) and one in eastern North America (P. procumbens). While morpholog...
常绿硬叶栎类Quercus section Heterobalanus Menitsky是中国西南东喜玛拉雅和横断山地区森林的优势种。虽然具有特殊的地理分布和显著的生态意义, 但常绿硬叶栎类分布区的气候封套以及现代分布与气候的关系却缺乏研究资料。本文通过计算10个气候指标, 利用主成分分析(PCA)和多元回归分析(MRA)就这两个方面进行了研究。中国西南常绿硬叶栎类分布下限的最热月均温(MTW)为...
高山植物条纹狭蕊龙胆的分子亲缘地理学研究
植物 叶绿体DNA 横断山区 条纹狭蕊龙胆 分子亲缘地理学 避难所 trnH (GUG)-psbA
2009/8/4
草本植物由于较短的生活周期以及对环境变化的敏感性, 可能会更好地揭示第四纪冰期以来植物居群变化的历史过程。分子亲缘地理学研究是揭示动植物居群历史的有力工具, 但到目前为止对青藏高原草本植物的分子亲缘地理学研究几乎是空白。因此, 本文选择在青藏高原及邻近地区生长的一年生高山草本植物条纹狭蕊龙胆为研究对象, 进行了13个居群155个个体的叶绿体基因组(cpDNA)非编码片段trnH (GUG)-psb...
追溯山茱萸科植物的性状进化和生物地理学历史——方法选择的影响?
AReA BAYESTRAITS BEAST biogeography chromosome evolution Cornaceae fruit and inflorescence evolution LAGRANGE MESQUITE divergence time
2009/8/4
This study compares results on reconstructing the ancestral state of characters and ancestral areas of distribution in Cornaceae to gain insights into the impact of using different analytical methods....
New records for the Turkish macrofungi from Amasya province
Macrofungi New records Ascomycetes Basidiomycetes Amasya Turkey
2010/3/17
Macrofungi specimens were collected from different localities in Amasya province between 2002 and 2005, particularly during the months of spring and autumn. In all, 16 species were identified as new r...
Notes on the Sikkim Himalayan rhododendrons: a taxa of great conservation importanc
Rhododendron conservation Sikkim Himalaya
2010/3/17
Rhododendrons form dominating species all along the temperate, subalpine and alpine zones in the Sikkim Himalaya. Rhododendron L. is one of the largest genus of the Ericaceae family, occurring in the ...