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29篇 您的检索式:作者名="Weibang"
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1Floral characteristics and pollination ecology of Manglietia ventii(Magnoliaceae),a plant species with extremely small populations(PSESP)endemic to South Yunnan of China显示文摘Manglietia ventii is a highly endangered plant species endemic to Yunnan province in China, where there are only five known small populations. Despite abundant flowering there is very low fruit and seed set,and very few seedlings in natural populations, indicating problems with reproduction. The causes of low fecundity in M. ventii are not known, largely because of insufficient knowledge of the species pollination ecology and breeding system. We conducted observations and pollination experiments, and analyzed floral scents to understand the pollinatoreplant interactions and the role of floral scent in this relationship, as well as the species breeding system. Like the majority of Magnoliaceae, M. ventii has protogynous and nocturnal flowers that emit a strong fragrance over two consecutive evenings. There is a closing period(the pre-staminate stage) during the process of anthesis of a flower, and we characterize the key flowering process as an 'open-close-reopen' flowering rhythm with five distinct floral stages observed throughout the floral period of this species: pre-pistillate, pistillate, pre-staminate, staminate,and post-staminate. Flowers are in the pistillate stage during the first night of anthesis and enter the staminate stage the next night. During anthesis, floral scent emission occurs in the pistillate and staminate stages. The effective pollinators were weevils(Sitophilus sp.) and beetles(Anomala sp.), while the role of Rove beetles(Aleochara sp.) and thrips(Thrips sp.) in pollination of M. ventii appears to be minor or absent. The major chemical compounds of the floral scents were Limonene, b-Pinene, a-Pinene, 1,8-Cineole, Methyl-2-methylbutyrate, p-Cymene, Methyl-3-methyl-2-butenoate and 2-Methoxy-2-methyl-3-buten, and the relative proportions of these compounds varied between the pistillate and staminate stages. Production of these chemicals coincided with flower visitation by weevils and beetles.The results of pollination experiments suggest that M. ventii is pollinator-dependent, and low seed set in natural populations is a result of insufficient pollen deposition. Thus, conservation of the species should focus on improving pollination service through the introduction of genetically variable individuals and increase in density of reproducing trees.Bin Wang Gao Chen Congren Li Weibang Sun 2017Plant Diversity2017,39,1:8
2Plant species with extremely small populations(PSESP) in China:A seed and spore biology perspective显示文摘Approximately one fifth of the world's plants are at risk of extinction.Of these,a significant number exist as populations of few individuals,with limited distribution ranges and under enormous pressure due to habitat destruction.In China,these most-at-risk species are described as 'plant species with extremely small populations'(PSESP).Implementing conservation action for such listed species is urgent.Storing seeds is one of the main means of ex situ conservation for flowering plants.Spore storage could provide a simple and economical method for fern ex situ conservation.Seed and spore germination in nature is a critical step in species regeneration and thus in situ conservation.But what is known about the seed and spore biology(storage and germination) of at-risk species? We have used China's PSESP(the first group listing) as a case study to understand the gaps in knowledge on propagule biology of threatened plant species.We found that whilst germination information is available for 28 species(23%of PSESP),storage characteristics are only known for 8%of PSESP(10 species).Moreover,we estimate that 60%of the listed species may require cryopreservation for long-term storage.We conclude that comparative biology studies are urgently needed on the world's most threatened taxa so that conservation action can progress beyond species listing.Ellie Merrett Wade Jayanthi Nadarajan Xiangyun Yang Daniel Ballesteros Weibang Sun Hugh W.Pritchard 2016Plant Diversity2016,38,5:6
3Pollination and seed dispersal of Aquilaria sinensis(Lour.)Gilg(Thymelaeaceae):An economic plant species with extremely small populations in China显示文摘Pollination and seed dispersal in angiosperms have long been investigated in order to understand the coevolution of plants and animals.However,the signals from flowers and/or seeds to attract pollinators and/or seed dispersers have received comparatively little attention.In this study,the pollination biology and seed dispersal of the vulnerable agarwood plant Aquilaria sinensis(Lour.) Gilg,a traditional medicinal plant in China,was studied in its natural distribution range.The reproductive tactics of A.sinensis were studied in detail by employing various tests dealing with fruit set and also seed dispersal.Dynamic headspace extraction followed by GC-MS analysis was also performed in order to reveal the composition of floral scent.The results showed that noctuids and pyralids are the most effective pollinators of pollinator-dependent A.sinensis.The main compounds of the floral scent were(E,E)-α-Farnesene(61.9 ± 3.2%),trans-Ocimene(16.6 ± 1.2%),and Benzyl salicylate(4.6 ± 1.1%).The results obtained from seed dispersal experiments indicate that hornets are effective seed dispersers and they may play an important role in long-distance seed dispersal of A.sinensis.Based on our findings,we recommend several protection methods for this threatened agarwood plant in China.Gao Chen Changqiu Liu Weibang Sun 2016Plant Diversity2016,38,5:5
4Reproductive biology of Magnolia sinica(Magnoliaecea),a threatened species with extremely small populations in Yunnan,China显示文摘Magnolia sinica is one of the most threatened trees endemic to Southeast Yunnan.Based on our investigations,only 52 individuals and eight populations are found in the wild.M.sinica has been categorized as Critically Endangered on the IUCN Red List and identified as a 'Plant Species with Extremely Small Populations(PSESP)'.Its fruit/seed set is very low and seedlings are rarely found in the wild.It is hypothesized that it may encounter obstacles to reproductive success.This study,therefore,focuses on its reproductive biology,knowledge of which is essential for effective conservation.Flowers of this species are protogynous and nocturnal,and possess a two-day rhythm of sexual presentation.For the first night of anthesis,the flowers are in the pistillate stage during which tepals open at dusk and close approx.1 h later(except for the open outer ones).They remain closed until the next afternoon,when flowers,now in the staminate stage,re-open and remain so until the tepals drop.Nocturnal beetles enter into the flowers and remain trapped throughout the night as the flower closes,during which time they feed on tepals.Pollen-gathering bees are found to visit the re-opened flowers and the beetles are released during this stage.Two species of Pleocomidae and Curculionidae beetles appear to be effective pollinators.M.sinica is a self-compatible,pollinator-dependent species,and its fruit/seed set can be significantly increased by hand-pollination.No functional seed dispersers have been found in its extant natural habitats.These findings suggest that it may face both pollination and seed disperser insufficiencies in its current fragmented habitats,which may account for its low regeneration.Here we propose conservation strategies based on our findings.Ye Chen Gao Chen Jing Yang Weibang Sun 2016Plant Diversity2016,38,5:4
5Comparative population genetic analyses suggest hybrid origin of Rhododendron pubicostatum,an endangered plant species with extremely small populations endemic to Yunnan,China显示文摘Gene flow between sympatric congeneric plants is thought to be very common and may pose serious threats to endangered species.In the present study,we evaluate the genetic diversity and divergence of three sympatric Rhododendron species in Jiaozi Mountain using newly developed microsatellites through the Illumina MiSeq sequencing approach.Genetic diversity of all three Rhododendron species studied was moderate in comparison to genetic parameters previously reported from species of this genus.Interestingly,genetic structure analysis of the three species identified a possible hybrid origin of the threatened Rh.pubicostatum.This sympatry should be considered a unimodal hybrid zone,since Rh.pubicostatum is predominant here.Unimodal hybrid zones are uncommon in Rhododendron,despite the fact that hybridization frequently occurs in the genus.Issues pertaining to the conservation of Rh.pubicostatum resulting from admixture of genetic material from its parental species are discussed.Xuemei Zhang Hantao Qin Weijia Xie Yongpeng Ma Weibang Sun 2020Plant Diversity2020,42,4:4
6The role of botanical gardens in scientific research, conservation, and citizen science显示文摘Plant diversity is currently being lost at an unprecedented rate, resulting in an associated decrease in ecosystem services. About a third of the world's vascular plant species face the threat of extinction due to a variety of devastating activities, including, over-harvesting and over exploitation, destructive agricultural and forestry practices, urbanization, environmental pollution, land-use changes, exotic invasive species, global climate change, and more. We therefore need to increase our efforts to develop integrative conservation approaches for plant species conservation. Botanical gardens devote their resources to the study and conservation of plants, as well as making the world's plant species diversity known to the public. These gardens also play a central role in meeting human needs and providing well-being. In this minireview, a framework for the integrated missions of botanical gardens, including scientific research,in/ex situ conservation, plant resource utilization, and citizen science are cataloged. By reviewing the history of the development of Kunming Botanical Garden, we illustrate successful species conservation approaches(among others, projects involving Camellia, Rhododendron, Magnolia, Begonia, Allium, Nepenthes, medicinal plants, ornamental plants, and Plant Species with Extreme Small Populations), as well as citizen science, and scientific research at Kunming Botanical Garden over the past 80 years. We emphasize that Kunming Botanical Garden focuses largely on the ex situ conservation of plants from Southwest China, especially those endangered, endemic, and economically important plant species native to the Yunnan Plateau and the southern Hengduan Mountains. We also discuss the future challenges and responsibilities of botanical gardens in a changing world, including: the negative effects of outbreeding and/or inbreeding depression; promoting awareness, study, and conservation of plant species diversity; accelerating global access to information about plant diversity; increasing capacity building and training activities. We hope this minireview can promote understanding of the role of botanical gardens.Gao Chen Weibang Sun 2018Plant Diversity2018,40,4:4
7Hierarchical ferric-cobalt-nickel ternary oxide nanowire arrays supported on graphene fibers as high-performance electrodes for flexible asymmetric supercapacitors显示文摘基于纤维的 supercapacitors (FSC ) 是精力存储家庭的新成员。他们现在的优秀灵活性并且在小、灵活、便携的设备有有希望的应用。当保留灵活性时, FSC 的存在挑战之一正在提高他们的精力密度。我们开发了一个灵巧、划算的方法基于层次 ferric-cobalt-nickel 制作一个高度电容的积极电极第三的氧化物 nanowire arrays/graphene 纤维和一个否定电极基于导出 polyaniline 的碳 nanorods/graphene 纤维。漂亮微观结构和两个电极的优秀电气化学的表演使我们能构造 highperformance 灵活不对称的 graphene 有 1.4 V 的操作电压的基于纤维的 supercapacitor 设备,一个特定的电容直到 61.58 mF ??摔??圠敔????猯'T??????????????猯'T???????猯'T???Jingxin Zhao Chaowei Li Qichong Zhang Jun Zhang Xiaona Wang Juan Sun Juanjuan Wang Jixun Xie Ziyin Lin Zhuo Li Weibang Lu Conghua Lu Yagang Yao 2018Nano Research2018,11,4:3
8The design of double line five step ship lock of Three Gorges Project显示文摘The general design and layout of the double-line five-step ship-lock,the water delivery technique for high head ship-lock,the key technical problems of fully lined ship-lock and the monitoring techniques for large-scale miter gates and hoisting equipment under complicated operation conditions of Three Gorges Project (TGP) are introduced.Since the operation of ship-lock in 2003,the operation practice has proved that the design techniques are advanced,rational and reliable.The design and construction of the fully lined ship-lock promotes the development of design theory and practice of ship-lock projects,which makes the construction technology of ship-lock in the world reach a new level.Niu Xinqiang Tong Di Song Weibang 2011Engineering Sciences2011,9,3:3
9Words from the Guest Editor-in-Chief显示文摘PSESP(Plant Species with Extremely Small Populations)is a new concept developed to rescue the most globally threatened plant species.It first appeared in'Proposal for the Extremely Small Population protection project for the endemic plants and animals of Yunnan',a report submitted to China's State Forestry Administration(SFA)through the Yunnan Forestry Department(YFD)in 2005.In September 2009,four years after the launch of the project。weibang sun 2016Plant Diversity2016,38,5:3
10High regional genetic differentiation of an endangered relict plant Craigia yunnanensis and implications for its conservation显示文摘Of the genus Craigia,widespread in the Tertiary,only two relict species survived to modern times.One species is now possibly extinct and the other one,Craigia yunnanensis,is severely endangered.Extensive surveys have located six C.yunnanensis populations in Yunnan province,southwest China.Using fluorescent amplified fragment length polymorphism(AFLP),the genetic diversity and population structure of these populations were examined.It was found that genetic diversity of C.yunnanensis was moderate at the species level,but low at regional and population levels.Analysis of population structure showed significant genetic differentiation between Wenshan and Dehong regions,apparently representing two geographically isolated for long time refuges.There are also clear indications of isolation between populations,which,together with anthropogenically caused decline of population size,will lead to general loss of the species genetic variation with subsequent loss of adaptive potential.To conserve the genetic integrity of C.yunnanensis,we recommend that ex-situ conservation should include representative samples from every population of the two differentiated regions(e.g.Wenshan and Dehong).The crosses between individuals originated from different regions should be avoided because of a high risk of outbreeding depression.As all the extant populations of C.yunnanensis are in unprotected areas with strong anthropogenic impact,there is no alternative to reintroduction of C.yunnanensis into suitable protected locations.Jing Yang Zerui Gao Weibang Sun Changqin Zhang 2016Plant Diversity2016,38,5:3
11The properties of dry-spun carbon nanotube fibers and their interfacial shear strength in an epoxy composite显示文摘Fei Deng Weibang Lu Haibo Zhao Yuntian Zhu Byung-Sun Kim Tsu-Wei Chou 2011Carbon2011,,5:2
12Constrained query of order-preserving submatrix in gene expression data显示文摘Tao JIANG Zhanhuai LI Xuequn SHANG Bolin CHEN Weibang LI Zhilei YIN 2016Frontiers of Computer Science2016,10,6:2
13Effects of Tert-Butylhydroquinone on Intestinal Inflammatory Response and Apoptosis following Traumatic Brain Injury in Mice显示文摘Wei Jin Hongbin Ni Yuxiang Dai Handong Wang Tianyu Lu Jun Wu Jian Jiang Weibang Liang Eric F. Morand 2011Mediators of Inflammation2011,,:1
14The properties of dry-spun carbon nanotube fibers and their interfacial shear strength in an epoxy composite显示文摘Fei Deng Weibang Lu Haibo Zhao Yuntian Zhu Byung-Sun Kim Tsu-Wei Chou 2011Carbon2011,,5:1
15The effective interfacial shear strength of carbon nanotube fibers in an epoxy matrix characterized by a microdroplet test显示文摘Mei Zu Qingwen Li Yuntian Zhu Moutushi Dey Guojian Wang Weibang Lu Joseph M. Deitzel John W. Gillespie Joon-Hyung Byun Tsu-Wei Chou 2011Carbon2011,,3:1
16The effective interfacial shear strength of carbon nanotube fibers in an epoxy matrix characterized by a microdroplet test显示文摘Mei Zu Qingwen Li Yuntian Zhu Moutushi Dey Guojian Wang Weibang Lu Joseph M. Deitzel John W. Gillespie Joon-Hyung Byun Tsu-Wei Chou 2011Carbon2011,,3:1
17Spectrum of the prod- ucts of operators and compact perturbations显示文摘Gong Weibang Han Deguang 1994Pro- ceedings of the American Mathematical Society1994,120,:1
18Introduction and utilization of the alien ornamentals显示文摘Sun Weibang Xiang Qibai 2005Chinese Landscape Architecture2005,,9:1
19A CONTINUUM MODEL FOR AXIAL-STRAIN-INDUCED TORSION IN SINGLE-WALL CARBON NANOTUBES显示文摘用原子论底的有限变丑的壳理论,我们经分解调查在单个墙的碳 nanotubes 在轴的变丑和扭转之间联合。我们发现 axial-strain-induced 扭转(ASIT ) 反应仅仅限于 chiral nanotubes。这回答被碳 nanotubes 的 chiralities 和半径影响。我们的结果类似于在文学报导的分子的动态模拟的。Weibang Lu Jian Wu 2009Acta Mechanica Solida Sinica2009,22,4:1
20Spectrum of the products of operators and compact perturbations 显示文摘Gong Weibang Han Deguang 1994Proceedings of the American Mathematical Society1994,120,:1
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