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Search Results: 1 - 10 of 34174 matches for " QIU Ying-Xiong "
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Studies on the endangerment mechanism of and conservation strategies for Changium smyrnioides
明党参的濒危机制及其保护对策的研究

QIU Ying-Xiong,FU Cheng-xin,
邱英雄
,傅承新

生物多样性 , 2001,
Abstract: The resource, the population ecology, structure and characters of seeds, pollination biology and the relationship between plumpness of seeds and environment were investigated in the rare plant Changium smyrnioides . The genetic diversity and genetic structure of the species were analysed by morphological characters of seeds, starch gel electrophoresis and RAPD analysis. The studies revealed lack of coordination between the ripening of the seeds and the season of East China, which resulted in low ratio of seed germination and low rate of population renewal. As human activity has destroyed and disturbed suitable habitat for the species, the range of each population has decreased and the habitat has become fragmented which has decreased gene flow between populations ( Nm <1.0). The low gene flow suggests that genetic drift may play a prominent role in shaping the present day genetic composition. Based on these results, some management strategies are proposed for protecting this species effectively.
An improved Hardy type inequality on Heisenberg group
Xiao Ying-Xiong
Journal of Inequalities and Applications , 2011,
Abstract: Motivated by the work of Ghoussoub and Moradifam, we prove some improved Hardy inequalities on the Heisenberg group n via Bessel function. Mathematics Subject Classification (2000): Primary 26D10
Studies on genetic diversity in Changium smyrnioides Wolff (Umbelliferae)
明党参的遗传多样性研究

QIU Ying-Xiong,HUANG Ai-Jun,FU Cheng-Xin,
邱英雄
,黄爱军,傅承新

中国科学院研究生院学报 , 2000,
Abstract: 对珍稀特有单种属植物明党参的4个居群的材料,从物种生物学及保护生物学的角度,对它们 的遗传多样性进行了研究和分析。研究结果表明:各居群染色体数目恒定(2n=20),核型类型均为2A型,居群间存在核型多型性,主要表现为染色体的杂合性及随体染色体的位置也有一定变化。采用淀粉凝胶电泳方法,分析了10个酶系统,获得19个基因位点的资料,分析结果表明:居群的遗传变异处于较低水平,多态性位点比率P=33.35%,等位基因平均数A=1.43,等位酶基因多样度指数 Ho:0.03,He=0.07。总的基因位点变异中,有58%的变异来自于居群间,42%的变异存在于居群内,居群杂合体过量的位点仅为13%。偏东部居群的遗传多态性比西南部居群高。根据明党参居群遗传变异式样并结合相关研究,提出了其遗传多样性保护策略。
Analysis of genetic differentiation and phylogenetic relationship between Changium smyrnioides and Chuanminshen violaceum using molecular markers and ITS sequences
明党参和川明参种间遗传分化和系统关系的分子标记和ITS序列分析

TAO Xiao-yu,GUI Xian-qun,FU Cheng-xin,QIU Ying-xiong,
陶晓瑜
,桂先群,傅承新,邱英雄

浙江大学学报(农业与生命科学版) , 2008,
Abstract: The data from RAPD,ISSR analysis,and the sequences of the nrDNA internal transcribed spacer(ITS) were used to evaluate the genetic differentiation and phylogenetic relationship between Changium smyrnioides and Chuanminshen violaceum.Six wild populations of C.smyrnioides and one cultivated population of C.violaceum were studied by ISSR and RAPD analysis.The results show that the genetic variation of C.smyrnioides was high and the majority of genetic variation occurred among populations.Cluster analysis(UPGMA) indicated that substantially genetic divergence was found between C.smyrnioides and C.violaceum at DNA level.The sequences of ITS-1 in six populations of C.smyrnioides ranged from 215 bp to 219 bp in size and those of ITS-2 from 224 bp to 227 bp.The G C contents of ITS-1 varied from 58.3% to 59.2%,and those of ITS-2 varied from 54.3% to 56.6%.ITS sequence analysis also revealed certain differences between C.smyrnioides and C.violaceum.ITS regions from C.smyrnioides,C.violaceum and relative species in Apioideae were sequenced and analyzed.Results strongly support the systematic position of C.smyrnioides.In the ITS phylogenetic trees,C.violaceum was sister to C.smyrnioides with high bootstrap values(100%),suggesting that C.violaceum should be placed in Smyrnieae Koch.
An ISSR analysis on population genetic diversity of the relict plant Ginkgo biloba
孑遗植物银杏群体遗传多样性的ISSR分析

GE Yong-Qi,QIU Ying-Xiong,DING Bing-Yang,FU Cheng-Xin Laboratory of Plant Systematic Evolution,Biodiversity,College of Life Sciences,Zhejiang University,Hangzhou,
葛永奇
,邱英雄,丁炳扬,傅承新

生物多样性 , 2003,
Abstract: 采用ISSR分子标记技术,对江苏泰兴、美国纽约的栽培银杏(Ginkgo biloba)群体和中国3个可能为野生的银杏自然群体(浙江西天目山、贵州务川、湖北大洪山区)的遗传多样性水平和群体遗传结构进行了研究。用13个引物对5个群体共66个样品进行扩增,共得到88个清晰的扩增位点,其中多态性位点62个,多态位点百分率(PPB)为70.45%。POPGENE分析结果表明:与其他裸子植物相比,银杏具有丰富的遗传变异(He=0.2408;Ho=0.3599)。贵州务川群体的遗传多样性水平最高(PPB=56.82%,He=0.2089,Ho=0.3087),江苏泰兴栽培群体(PPB=34.09%,,Ho=0.1269,Ho=0.1858)和美国纽约的栽培群体(PPB=23.86%,,He=0.0884,Ho=0.1312)的遗传多样性水平较低。Nei′s遗传多样性分析和AMOVA分析表明,3个可能的自然群体间出现了一定程度的遗传分化(Gst=0.1476,Φst=14.26%)。群体间一定程度的遗传分化可能是人为选择压力和基因流障碍引起的。根据Nei′s遗传距离矩阵分别构建了群体间和个体间的遗传关系树状图。由UPGMA聚类分析可知,贵州务川群体与浙江西天目山群体优先聚类;美国纽约群体与湖北大洪山群体具有较近的亲缘关系,它们可能为同一野生群体的后裔。通过对银杏群体遗传结构的分析并结合群落学调查研究,结果表明:贵州务川银杏群体很可能为野生自然群体。基于银杏群体遗传学和生态学的研究结果,建议在自然银杏群体最适生境和遗传多样性最高的贵州务川建立银杏保护区。由于银杏群体间出现了一定程度的分化,建议3个自然群体间可进行植株和幼苗相互移栽,以提高群体间的基因交流,以最大限度地保护银杏的遗传多样性。
A phylogenetic analysis of the Smilacaceae based on morphological data
菝葜科基于形态学证据的系统发育分析

Kenneth M CAMERON,CHEN Shi-Chao,QIU Ying-Xiong,WANG Ai-Li,Kenneth M CAMERON,FU Cheng-Xin,
陈士超
,邱英雄,王艾丽,傅承新

植物分类学报 , 2006,
Abstract: In order to construct phylogenetic relationships of the family Smilacaceae, 79 species representing all genera and sections of the family from all over the world were used for cladistic analysis, with Philesia and Lapageria of Philasiaceae as outgroups. A matrix of 36 binary and 11 multistate morphological characters was constructed. The first parsimonious analysis yielded numerous most parsimonious trees of 275 steps, and then 82 most parsimonious trees with 40.729 steps length were produced by reweighting characters using maximum values of rescaled consistency (RC), which remained stable after the second reweighting. There is a moderate resolution but generally poor bootstrap support for the phylogenetic relationships in the family. From the strict MP tree and the NJ tree, Ripogonum is a sister to Smilax, but may be better treated as a separate family. Heterosmilax is considered to be derived from ancestral Smilax and occurs as the most derived clade of the Smilacaceae, and thus it is reasonable to retain it as a section in Smilax s.l. Within Smilax most currently recognized sections are polyphyletic, but some major lineages are distinct. The herbaceous Smilax species form a monophyletic clade, and it is also the case for the South American species. Their positions in the cladogram are intriguing and may help to shed light on evolutionary and biogeographic history of the family.
Optimization of inter simple sequence repeats (ISSR) analysis as applied to preliminary study of genetic variation in Abies beshanzuensis M. H. Wu
百山祖冷杉的ISSR分析优化和遗传多样性初步研究

AI Jian-guo,QIU Ying-Xiong,YU Jiu-hua,CHEN Xiao-rong,DING Bing-yang,
哀建国
,邱英雄,余久华,陈小荣,丁炳扬

浙江大学学报(农业与生命科学版) , 2005,
Abstract: 以百山祖冷杉DNA为材料,分析了DNA浓度、Mg2 浓度、dNTP浓度、Taq酶的含量以及退火温度对ISSR-PCR扩增结果的影响,经过优化实验建立了百山祖冷杉ISSR-PCR最佳反应体系.25μL的PCR反应液含有的组分和终浓度分别为:约40 ng模板DNA,1.2 U Taq酶,0.4 μmol/L引物,1.5mmol/L MgCl2,0.2mmol/L dNTPs,2%去离子甲酰胺.利用优化反应体系从100个ISSR引物中,筛选出了13个稳定性高、重复性好的引物,对40个百山祖冷杉个体材料的DNA进行正式扩增,共扩增得到91条带,其中39条为多态性条带,多态位点百分率(PPB)为42.86%.百山祖冷杉的3个群体遗传多样性比较分析表明,人工辅助授粉产生的实生苗群体(PPB=37.36%)遗传多样性明显高于老树群体(PPB=16.48%)和嫁接苗群体(PPB=20.88%),这说明了人工辅助授粉繁育措施能有效提高百山祖冷杉的遗传变异水平.
Study on the best sampling proportion for the core accessions of the endangered species by Monte Carlo method
濒危植物核心种质取样比率的蒙特卡罗模拟研究

LI Zheng-hong,QIU Ying-xiong,XU Hai-ming,YE Qian,FU Cheng-xin,
李正宏
,邱英雄,徐海明,叶倩,傅承新

浙江大学学报(农业与生命科学版) , 2006,
Abstract: 针对濒危植物明党参ISSR数据以及八角莲和夏蜡梅的等位酶数据,以多态位点数(A)、多态位点百分数(PPB)、居群内基因多样度(Hs)、群体总的基因多样度(Ht)、基因分化系数(Gst)以及捕获的基因位点数为主要遗传多样性指标.利用蒙特卡罗模拟抽样法在各抽样比例下重复抽样1000次,并构建了3个植物群体的基因捕获曲线与基因增量曲线.通过两种曲线的比较分析确定这3种濒危植物的最佳取样比例皆为25%,但这并不意味着其他植物的最佳抽样比也为25%.此时明党参的多态位点数为163.多态位点百分数为40.85%.基因多样度为0.2744;八角莲的多态位点数为12.多态位点百分数为32.43%.基因杂合度为0.1943;夏蜡梅的多态位点数为10.多态位点百分数为25%,基因杂合度为0.0638,其各项遗传多样性指标与保护总群体95%遗传信息的样本非常相近.这说明通过蒙特卡罗模拟抽样与基因捕获及增量曲线综合分析确定核心种质的最佳抽样比例客观合理、切实可行。
扬子陆核古元古代A型花岗岩的年代学与地球化学研究及其构造意义
Geochronological and Geochemical Study for the Paleoproterozoic A-type Granite in the Nucleus of the Yangtze Craton and Its Tectonic Implication

邱啸飞, ,杨红梅, ,卢山松,谭娟娟,蔡应雄
QIU Xiao-fei
, ,YANG Hong-mei, , LU Shan-song,TAN Juan-juan,CAI Ying-xiong

- , 2015,
Abstract: 摘要: 以侵入于宜昌崆岭杂岩中的圈椅埫花岗岩体为研究对象,系统研究了其年代学和地球化学特征,并据此对岩石成因和扬子陆核古元古代构造演化过程进行探讨。锆石LA-ICP-MS U-Pb定年结果表明,圈椅埫花岗岩形成年龄为(1 822±44) Ma,说明其为扬子陆核古元古代岩浆活动产物。地球化学研究表明,该花岗岩体富Si,贫Al、Mg,微量元素组成上富集Rb、Th,具有Eu、Ba、Sr和高场强元素的负异常。岩石具有高Ga/Al比值和(Zr+Nb+Ce+Y)含量,其锆石饱和温度计算值较高(>862 ℃),综合地质地球化学特征表明该岩体应属铝质A型花岗岩。岩体的εNd(t)值在-12.4~-10.3之间变化,对应两阶段Nd同位素模式年龄值为3.3~3.2 Ga,暗示岩体可能形成于扬子陆核深部古老的长英质地壳物质在后碰撞伸展构造背景低压、高温条件下部分熔融。结合前人已有的研究成果,认为其可能与区域上2.0~1.9 Ga板块碰撞造山后发生的由碰撞挤压向伸展作用的构造转换作用有关。扬子陆核古元古代构造岩浆事件与全球范围内2.1~1.8 Ga的与Columbia超大陆演化有关的碰撞造山-裂解事件时间吻合,表明扬子陆核可能是Columbia超大陆的重要组成部分之一。
Abstract: This study carries out systematical geochemical and geochronological investigations on the Quanyi-shang granitic pluton intruding into the Kongling Complex, and discusses the petrogenesis and Paleoproterozoic evolution of the nucleus of the Yangtze craton. The zircon LA-ICP-MS U-Pb dating shows that crystallization age of the granite is (1 822±44) Ma, hence a typical product of Paleoproterozoic magmatism of the Yangtze continental interior. The geochemical research illustrates a depletion of Al, Mg and enrichment of Rb, Th, as well as negative anomalies of high field strength elements (HFSE) and Eu, Ba and Sr. High Ga/Al ratio and Zr+Nb+Ce+Y content and relatively high calculated zircon saturation temperature (>862 ℃), combined with other geochemical features, indicate that the Quanyishang granitic pluton is aluminous A-type granite. The εNd(t) value varies between -12.4 to -10.3 and the correspondent two-stage Nd isotopic modal ages range from 3.3 to 3.2 Ga. These characteristics imply that the granite may have formed by partial melting of ancient felsic crustal material in the nucleus of the Yangtze craton under a low-pressure, high-temperature condition at a post-collisional extensional tectonic setting. Combined with the documented work, it may have relationship with the regional tectonic transition from collisional extrusion to extention in a post-collisional setting during the period from 2.0 to 1.9 Ga. The Paleoproterozoic tectonic magmatic events of the Yangtze craton is consistent with the global 2.1-1.8 Ga collisional orogeny to breakup events related to the evolution of Columbia supercontinent, indicating that the nucleus of the Yangtze craton may have been an important part of Columbia supercontinent
An Improved Hardy-Rellich Inequality with Optimal Constant
Xiao Ying-Xiong,Yang Qiao-Hua
Journal of Inequalities and Applications , 2009,
Abstract: We show that a Hardy-Rellich inequality with optimal constants on a bounded domain can be refined by adding remainder terms. The procedure is based on decomposition into spherical harmonics.
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