نتایج جستجو برای: pcoa

تعداد نتایج: 465  

Journal: :Current Zoology 2023

Abstract Small and isolated populations face several intrinsic risks, such as genetic drift, inbreeding depression reduced gene flow, patterns of diversity differentiation have become an important focus conservation genetics research. The golden snub-nosed monkey Rhinopithecus roxellana, endangered species endemic to China, has experienced rapid reduction in population size severe fragmentation...

Journal: :Agronomy 2022

There has been increasing attention toward the influence of biofertilizers on composition microbial communities associated with crop plants. We investigated impact Azospirillum sp. B510, a bacterial strain nitrogen-fixing ability, structure and fungal within rice plant rhizospheres by amplicon sequencing at two sampling stages (the vegetative harvest rice). Principal coordinate analysis (PCoA) ...

Journal: :Biogeographia 2022

The Santolina chamaecyparissus complex includes 13 species of dwarf aromatic evergreen shrubs from the western Mediterranean Basin. Five native occurring in Italy are currently accepted. Four them endemic to relatively restricted areas peninsula, whereas S. corsica Jord. & Fourr. is Corsica and Sardinia. taxonomic treatments Italian have been changing significantly past, probably due misint...

Journal: :Hayati Journal of Biosciences 2022

Indonesia's local rice varieties (Oryza sativa L.) have a wide range of diversity that can be valuable sources for crop improvement with molecular markers. This study investigated varieties' genetic and population structure using simple sequence repeat (SSR) The SSR markers demonstrated their informativeness genotypic characterization as represented by the gene indices polymorphic information c...

2012
Rod Peakall Peter E. Smouse

SUMMARY GenAlEx: Genetic Analysis in Excel is a cross-platform package for population genetic analyses that runs within Microsoft Excel. GenAlEx offers analysis of diploid codominant, haploid and binary genetic loci and DNA sequences. Both frequency-based (F-statistics, heterozygosity, HWE, population assignment, relatedness) and distance-based (AMOVA, PCoA, Mantel tests, multivariate spatial a...

2009
K Ranil D. De Silva Lal S Gunasekera Rohan W Jayesekera Ranil D. De Silva

Background: The variations of the circle of Willis (CW) are clinically important as patients with efficient effective collateral circulations have a lower risk of transient ischemic attack and stroke than those with ineffective collaterals. The aim of the present cadaveric study was to investigate the anatomical variations of the CW and to compare the frequency of occurrence of the different va...

Journal: :Microbes and environments 2016
Sachiko Masuda Zhihua Bao Takashi Okubo Kazuhiro Sasaki Seishi Ikeda Ryo Shinoda Mizue Anda Ryuji Kondo Yumi Mori Kiwamu Minamisawa

Under paddy field conditions, biological sulfur oxidation occurs in the oxidized surface soil layer and rhizosphere, in which oxygen leaks from the aerenchyma system of rice plants. In the present study, we examined community shifts in sulfur-oxidizing bacteria associated with the oxidized surface soil layer and rice roots under different sulfur fertilization conditions based on the 16S ribosom...

2015
Pei Li Xin Zhan Qingmin Que Wenting Qu Juncheng Li Xiaomei Deng Junjie Zhang Boyong Liao Xiaoyang Chen Eric J. Jokela

Sequence-related amplified polymorphism (SRAP) markers were used to investigate the genetic diversity among 30 populations of Toona ciliata Roem. sampled from the species’ distribution area in China. To analyze the polymorphism in the SRAP profiles, 1505 primer pairs were screened and 24 selected. A total of 656 SRAP bands ranging from 100 to 1500 bp were acquired, of these 505 bands (77%) were...

Journal: :PloS one 2016
Bing-Jian Liu Bai-Dong Zhang Dong-Xiu Xue Tian-Xiang Gao Jin-Xian Liu

The spatial distribution of genetic diversity has been long considered as a key component of policy development for management and conservation of marine fishes. However, unraveling the population genetic structure of migratory fish species is challenging due to high potential for gene flow. Despite the shallow population differentiation revealed by putatively neutral loci, the higher genetic d...

2017
Hui Wang Yanling Wang Hongyang Li

Objectives To assess the underlying mechanisms of OIS and confirm the haemodynamic and retinal structure changes of early OIS. Methods An observational cross-sectional study was conducted of 60 internal carotid artery (ICA) stenosis patients, and they were divided into OIS and control group. Colour doppler imaging, optical coherence tomography, and fundus fluorescein angiography were performe...

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