Results 11 to 20 of about 6,364 (167)

入侵植物互花米草上的蚜虫新纪录:一条蚜及其种群分化 [PDF]

open access: yes, 2018
本研究报道了一条蚜Hysteroneura setariae在中国华南地区取食入侵植物互花米草,这是该植物上的首个蚜虫纪录。结合DNA条形码和系统发育分析,探究了互花米草上一条蚜种群的来源,并基于中国华南、印度、巴基斯坦、美国等地区样品的序列数据,分析了一条蚜种群遗传分化格局。结果显示:华南地区互花米草上的一条蚜来自周边其他寄主植物上一条蚜种群的扩散;北美本土一条蚜种群与亚洲地区种群具有一定程度的遗传分化。国家重点研发计划项目(2016YFE0203100);;国家自然科学基金项目(31772504);;
吴杨雪   +4 more
core   +1 more source

凡纳滨对虾养殖亲本群体遗传多样性分析 [PDF]

open access: yes, 2019
运用微卫星标记技术,选用8对微卫星引物对厦门市5个凡纳滨对虾亲虾群体(ZA1、HN、ZA2、ZP、DS)进行遗传多样性分析。结果显示,8对微卫星引物在5个凡纳滨对虾亲虾群体中共检测到75个等位基因,各群体的平均等位基因数(Na)为3. 875~7. 000、平均有效等位基因数(Ne)为2. 632~3. 719、平均PIC值范围在0. 498~0. 624。平均观测杂合度(Ho)为0. 410~0. 562、平均期望杂合度(He)为0. 589~0. 687。各群体的平均近交系数(Fis)为0. 147~
李天骄   +6 more
core   +1 more source

大鳞副泥鳅7个群体遗传变异的微卫星分析 [PDF]

open access: yes, 2012
利用泥鳅(Misgurnus anguillicaudatus)的微卫星引物跨种扩增大鳞副泥鳅(Paramisgurnus dabryanus),通过家系扩增、PCR产物测序筛选出6个座位,用于大鳞副泥鳅7个野生群体的遗传结构分析。结果显示,群体的平均等位基因数在3.167~4.833,平均观测杂合度(Ho)在0.248~0.417,平均期望杂合度(He)在0.379~0.505,多个座位存在零等位基因、杂合子缺失现象,显示大鳞副泥鳅种群遗传多样性较低。采用UPGMA法对7个群体基于DA遗传距离进行聚类,
俞小牧, 游翠红, 童金苟
core  

Genomic responses to increased temperature and pollinator selection in Brassica rapa L.

open access: yesNew Phytologist, EarlyView.
Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley   +1 more source

The genetic differentiation and mating system of Avicennia marina populations in China [PDF]

open access: yes, 2016
本研究利用SSR分子标记技术,以海南三亚河口、湛江特呈岛和泉州洛阳桥三个地区的白骨壤(Avicenniamarina)种群为研究对象,比较分析三个白骨壤种群的遗传多样性、种群之间的遗传分化和繁育系统模式(包括花粉流、异交率和种子流)。主要结果为: 1、10对核基因组SSR引物在742个个体检测到58个等位基因位点。每个引物扩增等位基因数在5-9个之间,平均5.8个。三个地区种群共出现了15个私有等位基因位点,在等位基因水平上已发现较大的分化与遗传距离。 2、湛江白骨壤种群遗传多样性水平最高 ...
侯蕊
core  

Genetic origins and climate‐induced erosion in economically important Asian walnuts

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract The global climate is undergoing unprecedented changes, posing significant threats to species persistence. However, the spatiotemporal impacts on genetic diversity remain poorly understood, hindering species conservation and management. Walnuts, generally referred to as Juglans regia and J. sigillata, are economically vital in Asia, but little
Peng‐Zhen Fan   +17 more
wiley   +1 more source

多基因风险评分的构建及其在卒中领域的应用 Construction and Application of Polygenic Risk Score in Stroke

open access: yesZhongguo cuzhong zazhi, 2023
卒中是一种由遗传和环境因素共同作用引起的复杂疾病,人类遗传学的发展为卒中的个体化预防和治疗提供了新的机会。多基因风险评分是根据个体的基因型和相关的全基因组关联研究数据,对一种性状或疾病的遗传倾向进行估计,是遗传学研究中全基因组关联研究的补充方法。多基因风险评分可以对患者进行风险分层以进行个性化管理,从而有助于卒中等复杂疾病的精准预测和防控。基于此,本篇综述阐述了多基因风险评分的构建及其在卒中研究中的应用情况,以期为国内相关研究提供思路。 Abstract: Stroke is a complex
陈思玎,姜勇,许喆,石延枫,程丝,谷鸿秋,王拥军
doaj   +1 more source

Population genetic variation and symbiotic and associated bacteria diversity studies of bryozoan Bugula neritina based on high-throughput sequencing [PDF]

open access: yes, 2016
多室草苔虫是一种重要的药源生物,从这种生物体内提取出的多种草苔虫内酯被证明有着较强的抗癌活性,其中草苔虫内酯bryostatin1是治疗阿尔茨海默症和多种癌症的最有希望的药物来源,而草苔虫内酯bryostatin1的产生与多室草苔虫体内的共生细菌“CandidatusEndobugulasertula”密切相关。然而,国内学者从中国沿海的多室草苔虫中却一直未能成功提取出这种最具药用价值的草苔虫内酯bryostatin1 ...
李海
core  

Hurricane Impacts on the Population Genetics of an Endangered Ecosystem Engineer 飓风对一种濒危生态系统工程师的种群遗传学影响

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 641-651, December 2025.
Key Largo woodrats are a small and endangered island species, whose individuals tend to occur in family groups. Isolation from mainland populations, predation, and habitat fragmentation have caused genetic drift, leading to low overall diversity. Here, we found that a major category 4 hurricane promoted genetic diversity in the Key Largo woodrat ...
Taylor Ackley   +5 more
wiley   +1 more source

Population genetic structure and phylogentic analysis for Morone americana in Delaware Bay of United States [PDF]

open access: yes, 2016
美洲狼鲈(Moroneamericana,Gmelin,1789)隶属于鲈形目(Perciformes),狼鲈科(Moronidae),狼鲈属(Morone),别名美洲白鲈、白石鮨。美洲狼鲈是在美国东海岸浅海区域十分常见的一种溯河洄游鱼类,每逢春末夏初,生活于近海和河口区域的美洲狼鲈便溯河洄游至河流中上游产卵繁衍。美洲狼鲈也经常被用作海区污染程度的指示种。鉴于美洲狼鲈广泛的分布范围以及巨大的种群数量,其十分适合作为近岸洄游性鱼类群体研究的模式种类。同时,其在检测环境污染方面也具有主要作用 ...
边力
core  

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