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锦鸡儿属(豆科)一新组合 总被引:4,自引:1,他引:3
中间锦鸡儿(Caragana
korshinskii var. intermedia), 与柠条锦鸡儿(C. korshinskii)和小叶锦鸡儿(C.
microphylla)是近缘种.但以前有不同的分类学名称和处理,本文把它作为柠条锦鸡儿的一个变种(C.
korshinskii Kom. var. intermedia (Kuang et H. C. Fu) M. L. Zhang & G. H. Zhu)来处理. 相似文献
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对国产黄杨科5 种植物作了分类学修订或补充: 将雀舌黄杨归入匙叶黄杨, 中间黄杨归入黄杨, 多毛板凳果归入板凳果, 双蕊野扇花归入羽脉野扇花; 恢复黄杨和尖叶黄杨的原学名;报道宜昌黄杨在湖南的新记录。 相似文献
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Tang Ya 《植物分类学报:英文版》1994,32(3):251-257
Since its establishment, the genus Corchoropsis Sieb. et Zucc. Has not been well understood. In the present paper, the genus is revised based on examination of herbarium specimens. One species consisting of two varieties is recognized. C. psilocarpa Harms et Loes. is reduced to a variety under C. tomentosa and C. intermedia Nakai, C. tomentosa var. glabrescens Nakai, C. tomentosa f. glabrescens (Nakai) Hara, C. tomentosa var. micropetala Y. T. chang, and C. tomentosa var. tomentosicarpa P. L. Chiu et G. R. Zhong are reduced as synonyms of C. tomentosa var. tomentosa. 相似文献
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HIROSHI IKEDA HIDEAKI OHBA F.L.S. 《Botanical journal of the Linnean Society. Linnean Society of London》1993,112(2):159-186
IKEDA, H. & OHBA, H., 1993. A systematic revision of Potentilla lineata and allied species (Rosaceae) in the Himalaya and adjacent regions . Potentilla lineata and allied species (Rosaceae) in the Himalaya and adjacent regions are revised. Potentilla festiva Soják, P. josephiana H. Ikeda & H. Ohba, P. lineata Trev., P. fallens Card, and P. polyphylla Wall, ex Lehm. are recognized. Potentilla josephiana is a new name for P.fulgens Wall, ex Hook. var. intermedia Hook. f. Four varieties are recognized in P. polyphylla: var. polyphylla; var. himalaka H. Ikeda & H. Ohba, var. nov.; var. interrupta (Yü & Li) H. Ikeda & H. Ohba, stat. & comb, nov.; and var. barbata Lehm. A polyploid series is found in this group. Four putative hybrids between the species are also recognized. 相似文献
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锦鸡儿属植物在鄂尔多斯高原区系和植被中的作用 总被引:12,自引:1,他引:11
锦鸡儿属植物在鄂尔多斯高原分布有9种。是物种多样性相对丰富的一个地区。其中中间锦鸡儿Caragana korshinskii var. intermedia,在鄂尔多斯高原东部和毛乌素沙地被当作优选的、广泛栽培的、习见的固沙和水土保持灌木树种。从植物区系成分上分析,主要是中亚成分和东亚成分,中亚成分有蒙古高原分布,阿拉善分布,戈壁-蒙古分布,内蒙古草原-黄土高原分布;东亚成分有华北分布,华北-青藏高原分布,以及蒙古高原南部-青藏高原成分。这些成分充分反映出这一地区与相邻地区的联系和过渡性。形成明显替代现象是本区东部的C. korshinskii var. intermedia与西部的C. korshinskii之间的替代。灌木种类是鄂尔多斯高原的优势生活型植物。在鄂尔多斯高原分布的14个主要灌木群落中,其中有4个重要的锦鸡儿群落,即中间锦鸡儿群系Form. Caragana korshinskii var. intermedia,狭叶锦鸡儿群系Form. Caragana stenophylla,柠条锦鸡儿群系Form. Caragana korshinskii,藏锦鸡儿群系Form. Caragana tibetica。中间锦鸡儿群系为优良的固沙和水土保持灌木。藏锦鸡儿群系则主要分布在西鄂尔多斯,为自然分布。在硬地及覆沙梁地形成高达40~80 cm的小沙丘包,在灌丛中占绝对优势,是锦鸡儿属植物在鄂尔多斯高原最典型的景观之一。这些锦鸡儿属植物群落对于揭示植被从东到西典型草原-荒漠化草原-荒漠的地带性分布具有典型的表征意义。 相似文献
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Diatom resting cell rejuvenation and formation: time course, species records and distribution 总被引:5,自引:0,他引:5
Physiological resting cells (as opposed to resting spores orcysts) have been identified for the following freshwater diatomspecies: Actinocydus normanii f. subsalsa, Asterionella formosa,Diatoma tenue var. elongatum, Fragilaria capucina, F.construens,F.construens var. venter, F.crotonenss, F.intermedia var. fallax,F.pinnata, Melosira granulata, M.islandica, M.italica subsp.subarctica, Stephanodiccus alpinus, S.binderanus, S.medius,S.niagarae, Tabellaria fenestrata and T.flocculosa. Restingcell populations were obtained from surficial sediments of threebays of the Laurentian Great Lakes. Surficial sediment resuspensions(down to 3 cm) were carried out in filtered bay water underlighted conditions which resulted in rejuvenation of these speciesto growing vegetative populations. All resting cells were characterizedby a dense cytoplasmic mass positioned in the center of thecell. Density of this mass varied between species. The abilityof individual species to rejuvenate is affected by temperature,and probably nutrients and/or other environmental factors. Restingcell formation was studied in a unialgal culture of M.granulataisolated from a Douglas Lake resuspension. Resting cells appearas a function of culture age; however, their formation can begreatly accelerated by reduced temperatures and darkness. Ourobservations suggest that the ability to form resting cellsand entrainment of such cells through turbulent mixing is animportant factor in determining phytoplankton community structureand succession in the Great Lakes. 相似文献
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Glucosinolates,flea beetle resistance,and leaf pubescence as taxonomic characters in the genus Barbarea (Brassicaceae) 总被引:3,自引:0,他引:3
Glucosinolate content of leaves and roots, diversity in leaf pubescence, and resistance to two near-isogenic lines of the flea beetle Phyllotreta nemorum with or without an R-gene, were determined for 27 accessions of 7 Barbarea taxa, i.e. B. stricta, B. orthoceras, B. intermedia, B. verna, B. vulgaris var. vulgaris, the G-type of B. vulgaris var. arcuata and the P-type of B. vulgaris var. arcuata. Four variable glucosinolate biosynthetic characters were deduced. For (formally) homophenylalanine-derived glucosinolates: (1). Presence or absence of 2-hydroxylation, and if present, R- or S-configuration of 2-hydroxylation; (2). presence or absence of p-hydroxylation; and for tryptophan-derived glucosinolates: (3). presence or absence of N-methoxyglucobrassicin; and (4). presence or absence of 1,4-dimethoxyglucobrassicin. Three phenotypes of leaf-pubescence were observed; (1). glabrous to glabrate leaves; (2). glabrous to glabrate leaves with hairs along the edge; (3). pubescent leaves. The hairs were characterized as simple by scanning electron microscopy. Full resistance to a flea beetle line (ST) was found in B. vulgaris var. vulgaris and in the G-type of var. arcuata; partial resistance was found in B. verna and B. intermedia, while the remaining taxa were fully susceptible to the ST line. All investigated Barbarea taxa were susceptible to larvae from another line containing an R-gene, indicating a similar flea beetle resistance mechanism in the three resistant species. Most Barbarea taxa could be characterized by a particular combination of the investigated characters. The most aberrant was the P-type of B. vulgaris var. arcuata, and the taxonomic status of this type should be reconsidered. 相似文献
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Pinho DB Pereira OL Firmino AL Silva Md Ferreira-Junior WG Barreto RW 《Mycologia》2012,104(1):121-137
Five new species, two new varieties and three newly reported taxa belonging to the Meliolaceae were collected in fragments of Atlantic forest from Minas Gerais, Brazil, in association with native plants and are described and illustrated herein. The newly described species are Appendiculella eupatorii, Meliola cassiae-ferrugineae, M. mutisiae, M. peruiferae, M. vernaliae. The new varieties are M. garugae var. protii and M. paullinifolii var. rubiginosae. These taxa are reported in Brazil for the first time: Asteridiella cyclopoda, A. entebbeensis var. codiaei and Meliola pazschkeana var. macropoda. We studied other species belonging in Meliolaceae collected on hosts belonging to the Asteraceae, Burseraceae, Euphorbiaceae, Fabaceae (Caesalpinioideae and Papilionoideae) and Sapindaceae in Brazil. 相似文献
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Akiyoshi Yamada Daisei Kitamura Masanobu Setoguchi Yosuke Matsuda Yasushi Hashimoto Norihisa Matsushita Masaki Fukuda 《Ecological Research》2008,23(6):983-993
Monotropastrum humile is nearly lacking in chlorophyll and obtains its nutrients, including carbon sources, from associated mycorrhizal fungi.
We analyzed the mycorrhizal fungal affinity and species diversity of M. humile var. humile mycorrhizae to clarify how the plant population survives in Japanese forest ecosystems. We classified 78 samples of adult
M. humile var. humile individuals from Hokkaido, Honshu, and Kyusyu Islands into 37 root mycorrhizal morphotypes. Of these, we identified 24 types
as Russula or Lactarius fungal taxa in the Russulaceae, Basidiomycetes, but we could not identify the remaining 13 types as to their genus in the
Basidiomycetes. The number of fungal species on M. humile var. humile was the highest in the plant subfamily. The diversity of fungal species revealed its increased trends in natural forests
at the stand level, fagaceous vegetation, and cool-temperate climate. The most frequently observed fungus colonized mainly
samples collected from sub-alpine forests; the second most frequently observed fungus colonized samples collected from sub-alpine
to warm-temperate forests. These results suggest that Japanese M. humile populations are associated with specific but diverse fungi that are common ectomycorrhizal symbionts of various forest canopy
trees, indicating a tripartite mycorrhizal relationship in the forest ecosystem. 相似文献
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Jenett-Siems K Köhler I Kraft C Siems K Solis PN Gupta MP Bienzle U 《Phytochemistry》2003,64(3):797-804
Ten novel neo-clerodane diterpenoids, named cornutins C-L, have been isolated from the leaves of Cornutia grandifolia var. intermedia. Their structures have been elucidated by detailed spectroscopic analysis. In addition, the in vitro antiplasmodial activity of four isolated compounds (cornutin C-F) has been evaluated, revealing only a marginal activity. 相似文献
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Aiman Faizudin Aziz Nor Azma Yusuf Boon Chin Tan Norzulaani Khalid 《Plant Cell, Tissue and Organ Culture》2017,128(1):25-41
We evaluated the ploidy levels and tissue culture responses of 16 Japanese Miscanthus accessions, which are registered and vegetatively maintained in the National Agriculture and Food Research Organization GeneBank, Japan, to screen suitable genotypes for the molecular breeding of Miscanthus species. A ploidy analysis showed that most M. sinensis and M. sinensis var. condensatus (var. condensatus) were putative diploids, but one accession identified as M. sinensis was unexpectedly a putative tetraploid. Additionally, M. sacchariflorus and its hybrid accessions were putative tetraploids. The deoxyribonucleic acid levels in var. condensatus were significantly higher than those in the diploid M. sinensis. Of the accessions, 10, including M. sinensis and var. condensatus, could induce plant regenerable embryogenic calli from apical meristems. We selected three of these M. sinensis accessions for further experiments because their calli growth rates were faster than those of the var. condensatus accessions. Tissue culture experiments with the selected accessions indicated that the frequencies of callus and green shoot formation strongly correlated with genotype. The broad-sense heritabilities of the embryogenic callus and green shoot formation frequencies in the selected accessions were 0.75 and 0.65, respectively, indicating that the cultures’ responses were mainly controlled by genetic factors. Thus, we further selected one accession that had the highest efficiencies in callus and green shoot formation, and we observed that light during callus culturing significantly inhibited calli growth, but promoted plant regeneration from calli in the selected accession. 相似文献
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Markku HÄKKINEN Chee How TEO Yasmin Rofina OTHMAN 《植物分类学报》2007,45(1):69-74
Borneo is a large island in Southeast Asia. It is divided politically into three parts: the kingdom of Brunei on the north central coast; the Malaysian states of Sarawak and Sabah to the west and east; with Kalimantan of Indonesia making up the larger par… 相似文献
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A genetic variant of the entomopathogenic fungus Metarhizium
anisopliae var. anisopliae, isolated from a soil in Alberta, Canada, from a location with a history of severe grasshopper infestations, was evaluated
for pathogenicity in bioassays of living grasshoppers. Mortality in treated individuals drawn from a laboratory colony was
99% (LT50 = 6.7 days, LT90 = 9.6 days) at 12 days post-inoculation compared to 100% (LT50 = 4.1 days, LT90 = 5.8 days) mortality at 8 days in insects exposed to a commercial isolate of M. anisopliae var. acridum (IMI 330189). Experimental infection of field-collected grasshoppers under laboratory conditions with the native isolate
of M. anisopliae var. anisopliae resulted in 100% (LT50 = 4.4 days, LT90 = 5.4 days) mortality attained within 7 days compared to 100% (LT50 = 4.7 days, LT90 = 6.3 days) mortality in 9 days in insects treated with M. anisopliae var. acridum. Amplification of fungal genomic DNA from the indigenous isolate with primers for the specific detection of M. anisopliae var. anisopliae produced a product almost 300 bp larger than expected based on previously known isolates. This is the first demonstration
of a highly virulent, indigenous non-chemical control agent of grasshoppers in North America.
GenBank Accession Nos. DQ342236, DQ342237. 相似文献
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J Kraicer B Lussier S Kotanen B C Moor 《Canadian journal of physiology and pharmacology》1988,66(4):318-320
Neuropeptide Y in concentrations from 10(-8) to 10(-6) M inhibits the release of alpha-MSH from the frog (Rana pipiens) pituitary in a reversible, sustained, and concentration-related manner. However, it does not inhibit the release of alpha-MSH from the rat pars intermedia. Thus, while neuropeptide Y may play a role in the control of alpha-MSH release in amphibia, it appears not to be a regulatory peptide for the mammalian pars intermedia. 相似文献