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1.
Cyananthus Wallich ex Bentham, the only genus of Campanulaceae with superior ovary, is revised to clarify infrageneric relationships and phylogeny of the genus. Evidence obtained from the comparative gross morphology, anatomy, palynology, and karyomorpho-logy recommends a new infrageneric classification of the genus, recognizing 23 species, belonging to two subgenera, four sections and four subsections. One subgenus(Subgen. Mi-cranthus), one section(Sect. Suffruticulosi) and two subsections(Subsect. Flavi and Sub-sect. Lichiangenses)are described as new taxa. New combinations at sectional (Sect. Annui) and subsectional(Subsect. Stenolobi) ranks are also proposed. The genus Cyananthus is strictly distributed in the high mountains of China(Xizang, Yunnan and Sichuan), extending to Bhutan, Nepal and India (Kumaon-Garhwal, Assam and Sikkim), with altitudinal ranges from 2500 ~ 5300 m. It is observed that 13 species are endemic to SW China and only three species are endemic to the Himalayas( two species in Ne 相似文献
3.
Ranković B 《Mycopathologia》1997,139(3):157-164
From 1982 to 1996, in Serbia, 229 species of plants infected with powdery mildew were collected. Seventy-five species had
hyperparasites of the genus Ampelomyces. Distribution analysis showed that hyperparasitism was greatest on plants from the
families Asteraceae, Apiaceae and Fabaceae. Ampelomyces was not found on the family Poaceae. It was reported for the first
time on the families Amygdalaceae, Cornaceae, Grossulariaceae, Plantaginaceae, Rhamnaceae and other 37 plant species. Hyperparasites
of the genus Ampelomyces were found on 33 different species of fungi that are causal agents of powdery mildews. They are reported
for the first time on nine species. Pycnidial size varied in the range 45–106 × 25.5–40.5 μm and conidia from 4.5–10.5 × 2.5–4.8
μm.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
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6.
The genus Byssosphaeria from China was briefly reviewed based on specimen examinations and literature work. Taxonomic and nomenclatural problems are discussed. Among the previously recorded taxa of the genus, a new combination, Byssosphaeria hainanensis, is made and a new Chinese record, B. alnea, is reported. A key to the known species of the genus in China is provided. 相似文献
7.
L. Lu H. Wang S. Blackmore D. Z. Li L. N. Dong 《Plant Systematics and Evolution》2007,268(1-4):177-198
Pollen morphology of 36 species representing 14 genera within the tribe Rhinantheae in the family Orobanchaceae was studied
and illustrated with light microscopy (LM) and scanning electron microscopy (SEM). Five major pollen types were recognized
on the basis of exine ornamentation. Within these major types, minor types (subtypes) were distinguished based on exine surface
pattern, size, shape, amb form, colpi and colpus membrane. These types and subtypes are as follows: type I. retipilate: subtype
Ia. regular retipilate: (1) pollen size < 27 μm, (2) pollen size > 27 μm, subtype Ib. irregular retipilate; type II. verrucate:
subtype IIa. macro-verrucate, subtype IIb. verrucate, subtype IIc. sparse verrucate; type III. retirugulate; type IV. granulate;
type V. micro-reticulate. A key to pollen morphology of genera studied within the Rhinantheae was made based on pollen morphology
from our study and earlier work. Combining with other sources of information on the Rhinantheae, the systematic relationships
of this tribe are discussed. Rhinantheae pollen displays considerable variation between genera and species, with taxonomically
significant characters at genus and species level. Palynological characteristics provide evidence for interpreting the conflicting
views concerning the “Pterygiella Complex”. The evolutionary trend in exine sculpture of Rhinantheae could be proposed, namely that retipilate sculpturing
which is the most widespread type is more primitive than the other types (such as foveolate, granulate, regulate, reticulate,
retirugulate and verrucate). The pollen data in present study and the view of Hong (1986), as well as the molecular data from
Bennett and Mathews (2006) indicated that Asia and related regions were likely to the origin centre of the tribe Rhinantheae. 相似文献
8.
《昆虫分类学报》1992,(1)
The butterflies of the genus Bhutanitis Atkinson 1873 are rare species of the worldand listed by IUKN in grade R of the endangered animals, while in China it is placed ingrade Ⅱ in the Protection Law of Wild Animals. Four species of the genus are distributed in the southern parts of Asia, and among 相似文献
9.
Molecular phylogenetic relationships of China Seas groupers based on cytochrome b gene fragment sequences 总被引:1,自引:1,他引:0
DING Shaoxiong ZHUANG Xuan GUO Feng WANG Jun SU Yongquan ZHANG Qiyong LI Qifu 《中国科学:生命科学英文版》2006,49(3)
The classification and evolutionary relationships are important issues in the study of the groupers. Cytochrome b gene fragment of twenty-eight grouper species within six genera of subfamily Epinephelinae was amplified using PCR techniques and the sequences were analyzed to derive the phylogenetic relationships of the groupers from the China Seas. Genetic information indexes, including Kimura-2 parameter genetic distance and Ts/Tv ratios, were generated by using a variety of biology softwares. With Niphon spinosus, Pagrus major and Pagrus auriga as the designated outgroups, phylogenetic trees, which invoke additional homologous sequences of other Epinephelus fishes from GenBank, were constructed based on the neighbor-joining (NJ), maximum-parsimony (MP), maximum-likelihood (ML) and minimum-evolution (ME) methods. Several conclusions were drawn from the DNA sequences analysis: (1) genus Plectropomus, which was early diverged, is the most primitive group in the subfamily Epinephelinae; (2) genus Variola is more closely related to genus Cephalopolis than the other four genera; (3) genus Cephalopolis is a monophyletic group and more primitive than genus Epinephelus; (4) Promicrops lanceolatus and Cromileptes altivelis should be included in genus Epinephelus; (5) there exist two sister groups in genus Epinephelus. 相似文献
10.
INTRODUCTION One resupinate, poroid specimen of wood-inhabiting fungi was collected on angiosperm stump from tropical forest of Hainan Province. After microscopic examination it turned out to be Theleporus calcicolor (Sacc. & P. Syd.) Ryvarden.The genus Theleporus Fr. was not reported from China previously (Dal et al., 2004), and this report is the first record of both the genus and the species in China. 相似文献