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Journal articles on the topic 'Genetic diversity and variation'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Ansari, K. I., N. Palacios, C. Araya, T. Langin, D. Egan, and F. M. Doohan. "Genetic variation between Colletotrichum lindemuthianum isolates." Plant Protection Science 38, SI 2 - 6th Conf EFPP 2002 (2017): 378–80. http://dx.doi.org/10.17221/10496-pps.

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We characterized the genetic diversity of seventy-three C. lindemuthianum isolates collected from 10 different countries by Amplified Fragment Length Polymorphism (AFLP) analysis. The results of this research highlighted the fact that there is huge variation in the genetic diversity between isolates from different countries. The molecular profile of the isolates showed correlation with geographic origin of the isolates.

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2

Bergmann, F., H. R. Gregorius, D. Kownatzki, and Chr Wehenkel. "Different diversity measures and genetic traits reveal different speciesgenetic diversity relationships: A case study in forest tree communities." Silvae Genetica 62, no. 1-6 (2013): 25–37. http://dx.doi.org/10.1515/sg-2013-0004.

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AbstractRelationships between species diversity and genetic diversity, the two most important elements of biodiversity, have recently attracted considerable interest in the field of community genetics. The present study contributes to this issue by addressing three questions that seem to have been ignored so far, namely whether the use of (a) different diversity measures, of (b) different components of diversity, and of (c) different genetic traits may lead to different assessements of speciesgenetic diversity relationships. For this purpose, data on species composition and genetic traits were

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3

CROW, J. F. "Human Genetic Diversity: Genetic Variation and Its Maintenance." Science 236, no. 4807 (1987): 1475–76. http://dx.doi.org/10.1126/science.236.4807.1475-a.

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4

Vostrý, L., O. Kracíková, B. Hofmanová, V. Czerneková, T. Kott, and J. Přibyl. "Intra-line and inter-line genetic diversity in sire lines of the Old Kladruber horse based on microsatellite analysis of DNA." Czech Journal of Animal Science 56, No. 4 (2011): 163–75. http://dx.doi.org/10.17221/1437-cjas.

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The Old Kladruber horse is the oldest original Czech horse breed &ndash; gene resource, with pedigree records spanning three centuries. Because the population is closed, there is a concern about the loss of genetic variation. The genetic diversity within and amongst sire lines was evaluated using microsatellite markers and based on pedigree information. The DNA analysis, covering 16 microsatellite loci, revealed that the genetic diversity (observed heterozygosity = 0.637, genetic diversity = 0.678 and the mean number of alleles = 8.25) for the Old Kladruber horse is consistent with other p

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S, CHITHRA, and RAJALAKSHMI R. "Genetic diversity study of Tagetes Linn. (Asteraceae)." Journal of Medicinal and Aromatic Plant Sciences 36, no. 2 (2014): 49–58. http://dx.doi.org/10.62029/jmaps.v36i2.s.

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Present study was conducted to access genetic diversity among 10 genotypes of two species of Tagetes i.e., Tagetes erecta (6 cultivars) and Tagetes patula (4 cultivars). Though Tagetes possesses great economical value, little attention has been paid for its genetic improvement. Four polymorphic isozyme systems (AAT, MDH, EST and PRX) were selected for cultivar identification. In isozyme analysis, peroxidase was able to differentiate both the species. Esterase showed large number of alleles and polymorphism to differentiate the two species as well as cultivars of the same species. The data woul

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Eichten, Steven R., Akanksha Srivastava, Adam J. Reddiex, et al. "Extending the Genotype in Brachypodium by Including DNA Methylation Reveals a Joint Contribution with Genetics on Adaptive Traits." G3: Genes|Genomes|Genetics 10, no. 5 (2020): 1629–37. http://dx.doi.org/10.1534/g3.120.401189.

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Epigenomic changes have been considered a potential missing link underlying phenotypic variation in quantitative traits but is potentially confounded with the underlying DNA sequence variation. Although the concept of epigenetic inheritance has been discussed in depth, there have been few studies attempting to directly dissect the amount of epigenomic variation within inbred natural populations while also accounting for genetic diversity. By using known genetic relationships between Brachypodium lines, multiple sets of nearly identical accession families were selected for phenotypic studies an

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Huang, W. K., F. H. Wan, J. Y. Guo, B. D. Gao, B. Y. Xie, and D. L. Peng. "AFLP analyses of genetic variation of Eupatorium adenophorum (Asteraceae) populations in China." Canadian Journal of Plant Science 89, no. 1 (2009): 119–26. http://dx.doi.org/10.4141/cjps07162.

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The Eupatorium adenophorum is one of the most widespread invasive alien species in China. In the present study, the genetic variation and population structure of this species were analyzed using amplified fragment length polymorphism (AFLP) markers. Nine primer pairs were selected for the analysis and 685 bands were produced, among which 474 bands were polymorphic (PPB = 69.2%). Diversity levels within populations were relatively high (mean expected heterozygosity = 0.188, mean Shannon index = 0.296). Regression analysis showed a significant positive relationship between Shannon genetic divers

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Rinehart, Timothy A., Brian E. Scheffler, and Sandra M. Reed. "Ploidy Variation and Genetic Diversity in Dichroa." HortScience 45, no. 2 (2010): 208–13. http://dx.doi.org/10.21273/hortsci.45.2.208.

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Recent evidence suggests a close genetic relationship between Hydrangea macrophylla (Thunb.) Ser. and D. febrifuga Lour., which supports previous morphological and DNA sequence data. This relationship was confirmed by the production of fertile intergeneric hybrids. We characterize the genetic diversity of available D. febrifuga plants, both cultivars and wild-collected taxa, as breeding material to improve H. macrophylla. Relatively high genetic diversity is seen among D. febrifuga, which splits into two main clusters. We also document considerable differences in genome size when compared with

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Cunha, Andressa Maria, Mariana Terossi, Fernando Luis Mantelatto, and Alexandre Oliveira Almeida. "Genetic variation and cryptic diversity of the." Marine and Freshwater Research 73, no. 3 (2021): 319–27. http://dx.doi.org/10.1071/mf21043.

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Alpheus lobidens sensu lato is one of the most common groups of snapping shrimps in the Indo-West Pacific. The objective of this study was to investigate the phylogenetic relationships among lineages of A. lobidens s.l. throughout their geographical distribution and identifying possible morphological characteristics that support the lineages from this combined dataset. Molecular data were obtained by analysing 16S rRNA from nine individuals of A. lobidens, three of A. buckupi, one of A. inopinatus and six other Alpheus species. The genetic analyses (mean p-distance and Bayesian Inference) indi

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Blasco, Manuel, María del Mar Naval, Elena Zuriaga, and María Luisa Badenes. "Genetic variation and diversity among loquat accessions." Tree Genetics & Genomes 10, no. 5 (2014): 1387–98. http://dx.doi.org/10.1007/s11295-014-0768-3.

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P, VEERABADHIRAN, RAMAMOORTHI N, and NADARAJAN N. "GENETIC VARIATION AND DIVERSITY IN GREEN GRAM." Madras Agricultural Journal 83, October (1996): 633–35. http://dx.doi.org/10.29321/maj.10.a01069.

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Genetic variation and diversity studies among 21 genotypes of green gram collected from different sources were carried out for five economic characters. The seed yield and plant height showed moderate genotypic coefficient of variation. High heritability coupled with high genetic advance as percent of mean was noticed for plant height and seed yield. By application of D2 analysis, the twenty one genotypes were grouped into three clusters. The types chosen from the same eco-geographic region were found scattered in different clusters. The clustering together of types from the same eco-geographi

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Ni, Biao, Jian You, Jiangnan Li, Yingda Du, Wei Zhao, and Xia Chen. "Genetic and Epigenetic Changes during the Upward Expansion of Deyeuxia angustifolia Kom. in the Alpine Tundra of the Changbai Mountains, China." Plants 10, no. 2 (2021): 291. http://dx.doi.org/10.3390/plants10020291.

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Ecological adaptation plays an important role in the process of plant expansion, and genetics and epigenetics are important in the process of plant adaptation. In this study, genetic and epigenetic analyses and soil properties were performed on D. angustifolia of 17 populations, which were selected in the tundra zone on the western slope of the Changbai Mountains. Our results showed that the levels of genetic and epigenetic diversity of D. angustifolia were relatively low, and the main variation occurred among different populations (amplified fragment length polymorphism (AFLP): 95%, methylati

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Song, Jiaming, Xin Zhao, Bo Lin, et al. "Single Nucleotide Polymorphisms and Insertion/Deletion Variation Analysis of Octoploid and Decaploid Tropical Oil Tea Camellia Populations Based on Whole-Genome Resequencing." Plants 13, no. 21 (2024): 2955. http://dx.doi.org/10.3390/plants13212955.

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Oil tea camellia (Camellia spp.) is an important woody oil crop with a high nutritional and economic value. Whole-genome resequencing (WGR) technology can provide an in-depth understanding of the genetic background of this plant as well as a reference for breeding research, germplasm resource conservation, and genetic modification. In this study, we analyzed SNP and InDel variations in 49 individual oil tea camellia germplasm samples collected from five populations located in three provinces of China: Hainan, Guangdong and Guangxi. The samples were analyzed through WGR after the ploidy of the

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Sun, Jiahui, Yiheng Wang, Ping Qiao, et al. "Pueraria montana Population Structure and Genetic Diversity Based on Chloroplast Genome Data." Plants 12, no. 12 (2023): 2231. http://dx.doi.org/10.3390/plants12122231.

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Despite having a generally conserved structure, chloroplast genome data have been helpful for plant population genetics and evolution research. To mine Pueraria montana chloroplast genome variation architecture and phylogeny, we investigated the chloroplast variation architecture of 104 P. montana accessions from across China. P. montana’s chloroplast genome showed high diversity levels, with 1674 variations, including 1118 single nucleotide polymorphisms and 556 indels. The intergenic spacers, psbZ-trnS and ccsA-ndhD, are the two mutation hotspot regions in the P. montana chloroplast genome.

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Nilkanta, Heikrujam, Thoungamba Amom, Leimapokpam Tikendra, Hamidur Rahaman, and Potshangbam Nongdam. "ISSR Marker Based Population Genetic Study of Melocanna baccifera (Roxb.) Kurz: A Commercially Important Bamboo of Manipur, North-East India." Scientifica 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/3757238.

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Melocanna baccifera (Roxb.) Kurz is an economically important bamboo of North-East India experiencing population depletion in its natural habitats. Genetic variation studies were conducted in 7 populations sampled from 5 districts of Manipur using ISSR molecular markers. The investigation was carried out as a primary step towards developing effective conservation strategies for the protection of bamboo germplasm. ISSR marker analysis showed significant level of genetic variation within the populations as revealed by moderately high average values of Nei’s genetic diversity (H 0.1639), Shannon’

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Arya, Pooja, and Suresh Kumar Maurya. "Assessment of genetic divergence in pumpkin (Cucurbita moschata)." Indian Journal of Agricultural Sciences 92, no. 6 (2022): 726–31. http://dx.doi.org/10.56093/ijas.v92i6.110246.

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Pumpkin (Cucurbita moschata L.) is one of the most important Cucurbitaceous crops having a huge potential ofnutritional security and has vast diversity in Indian condition. Forty diverse genotypes of pumpkin were evaluated for phenotypical variations and assessment of genetic diversity, at G B Pant University of Agriculture and Technology Pantnagar during spring-summer of 2018 and 2019. The experiment was laid out in Randomized Block Design (RBD) with three replications. The data was subjected to Principal Component Analysis, where a total of 8 components were identified. First four components

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Mitchell-Olds, Thomas. "Genetic Diversity of Plant Species in Glacier National Park: Implications for Management." UW National Parks Service Research Station Annual Reports 14 (January 1, 1990): 55–58. http://dx.doi.org/10.13001/uwnpsrc.1990.2875.

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Glacier National Park (GNP) is responsible for the management and preservation of biological diversity in the natural populations of plants and animals occurring within its boundaries. Information on existing levels of genetic variation within and among populations is a prerequisite for developing management strategies to maintain genetic diversity and to perform revegetation activities. We are using two methods to assess levels of genetic diversity and differentiation among populations: quantitative genetic analysis and isozyme (electrophoresis) analysis. To examine whether patterns of geneti

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Mungai, Grace W., Willis Owino, Jane Ambuko, J. J. Giovannoni, A. B. Nyende, and G. Michuki. "Genetic diversity within African tomato using next generation sequencing." Plant Genetic Resources: Characterization and Utilization 16, no. 4 (2018): 296–305. http://dx.doi.org/10.1017/s1479262117000314.

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AbstractFull potential of African tomato has not been tapped due to lack of information regarding its characterization. The aim of this work was to study the diversity of 17 African tomato landraces collected from Solanaceae gene bank – Tanzania. Evaluation was done using Complete Random Block Design. Morphological data collected were subjected to GenStat's and Darwin6 software. RNA was extracted from leaf samples, fruits at three ripening stages using modified Trizol method and sequencing done using Illumina sequencing platform. The raw reads were filtered and analysed using the Bioinformatic

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Zichello, Julia M., Karen L. Baab, Kieran P. McNulty, Christopher J. Raxworthy, and Michael E. Steiper. "Hominoid intraspecific cranial variation mirrors neutral genetic diversity." Proceedings of the National Academy of Sciences 115, no. 45 (2018): 11501–6. http://dx.doi.org/10.1073/pnas.1802651115.

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Natural selection, developmental constraint, and plasticity have all been invoked as explanations for intraspecific cranial variation in humans and apes. However, global patterns of human cranial variation are congruent with patterns of genetic variation, demonstrating that population history has influenced cranial variation in humans. Here we show that this finding is not unique toHomo sapiensbut is also broadly evident across extant ape species. Specifically, taxa that exhibit greater intraspecific cranial shape variation also exhibit greater genetic diversity at neutral autosomal loci. Thus

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Horak, Michael J., Jodie S. Holt, and Norman C. Ellstrand. "Genetic Variation in Yellow Nutsedge (Cyperus esculentus)." Weed Science 35, no. 4 (1987): 506–12. http://dx.doi.org/10.1017/s004317450006046x.

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Genetic diversity within and among populations of yellow nutsedge (Cyperus esculentusL. # CYPES) was analyzed to evaluate and quantify the genetic consequences of the reported predominance of asexually-produced tubers as colonizing agents. Ten populations were examined using starch gel electrophoresis for allozyme analysis. Four populations of purple nutsedge (Cyperus rotundusL. # CYPRO) were surveyed for comparison. Twelve loci were identified in yellow nutsedge among the eight enzyme systems examined; ten of these loci were found in purple nutsedge. Yellow nutsedge showed relatively low gene

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Parker, Kathleen C., and J. L. Hamrick. "Genetic variation in sand pine (Pinusclausa)." Canadian Journal of Forest Research 26, no. 2 (1996): 244–54. http://dx.doi.org/10.1139/x26-028.

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Pinusclausa (Chapm. ex Engelm.) Vasey ex Sarg. is a member of subsection Contortae that is restricted to Florida and the southern tip of Alabama. The present distribution of P. clausa is divided into two purported varieties: var. clausa in peninsular Florida and var. immuginata primarily in the Florida panhandle. We determined allozyme diversity and population genetic structure for 12 populations of var. clausa and 9 populations of var. immuginata. At the species level, 88% of the 26 loci examined were polymorphic. The genetic diversity maintained at both the species (Hes = 0.100) and populati

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Berg, Edward E., and J. L. Hamrick. "Regional genetic variation in turkey oak, Quercuslaevis." Canadian Journal of Forest Research 23, no. 7 (1993): 1270–74. http://dx.doi.org/10.1139/x93-162.

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Quercuslaevis Walt, (turkey oak) is a dominant hardwood tree in the sandhills communities of the coastal plain of the southeastern United States. Estimates of allozyme diversity for this species were typical of oaks (Hes = 0.184) and diversity within eleven sandhills populations was also relatively high (Hep = 0.178). Genetic diversity among populations was low (GST = 0.032), being about one third of the mean for other oak species. We interpret the interpopulation homogeneity as a relict of a previously more continuous distribution of longleaf pine (Pinus palustris Mill.)–turkey oak forest tha

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Sheehan, Michael J., Juanita Choo, and Elizabeth A. Tibbetts. "Heritable variation in colour patterns mediating individual recognition." Royal Society Open Science 4, no. 2 (2017): 161008. http://dx.doi.org/10.1098/rsos.161008.

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Understanding the developmental and evolutionary processes that generate and maintain variation in natural populations remains a major challenge for modern biology. Populations of Polistes fuscatus paper wasps have highly variable colour patterns that mediate individual recognition. Previous experimental and comparative studies have provided evidence that colour pattern diversity is the result of selection for individuals to advertise their identity. Distinctive identity-signalling phenotypes facilitate recognition, which reduces aggression between familiar individuals in P. fuscatus wasps. Se

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Mauki, David H., Adeniyi C. Adeola, Said I. Ng’ang’a, et al. "Genetic variation of Nigerian cattle inferred from maternal and paternal genetic markers." PeerJ 9 (March 5, 2021): e10607. http://dx.doi.org/10.7717/peerj.10607.

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The African cattle provide unique genetic resources shaped up by both diverse tropical environmental conditions and human activities, the assessment of their genetic diversity will shade light on the mechanism of their remarkable adaptive capacities. We therefore analyzed the genetic diversity of cattle samples from Nigeria using both maternal and paternal DNA markers. Nigerian cattle can be assigned to 80 haplotypes based on the mitochondrial DNA (mtDNA) D-loop sequences and haplotype diversity was 0.985 + 0.005. The network showed two major matrilineal clustering: the dominant cluster consti

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Shakoor, Abdul, Gul Zaib, Fang Zhao, Wuyang Li, Xincan Lan, and Somayeh Esfandani-Bozchaloyi. "ISSR markers and morphometry determine genetic diversity and population structure in Hedera helix L." Czech Journal of Genetics and Plant Breeding 58, No. 2 (2022): 73–82. http://dx.doi.org/10.17221/93/2021-cjgpb.

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Hedera helix L. is an invasive, but medicinally important plant. In Iran, there is no available study on the H. helix population to reveal the genetic diversity and population structure. Fifty-six individual plants belonging to nine geographical populations were collected in four provinces of Iran. High genetic diversity, polymorphisms, and a Shannon diversity index of 0.269 were detected in Mazandaran, Kandovan (Population 3). Analysis of the molecular variance indicated 40% of total genetic variation of the whole population was present in the subpopulation. A high genetic similarity (0.922)

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Li, Sha, Xiaomei Jiang, and Shahram Mehri. "Genetic diversity and gene-pool of Aegilops tauschii Coss. (Poaceae) based on retrotransposon-based markers." Genetika 53, no. 3 (2021): 1331–40. http://dx.doi.org/10.2298/gensr2103331l.

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Genetic variation is an essential feature of biological variety for conservation methods, particularly for scarce and strictly endemic species. Iran's population genetic structure, genetic variation, and morphological variations are all unknown. Because of the therapeutic value of this species, six regional populations of Aegilops tauschii were studied for genetic diversity and population structure. To uncover within and among population genetic variation in this plant, we employed six inter-retrotransposon amplified polymorphism (IRAP) markers and 15 combined IRAP markers. The AMOVA test indi

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Exposito-Alonso, Moises, Tom R. Booker, Lucas Czech, et al. "Genetic diversity loss in the Anthropocene." Science 377, no. 6613 (2022): 1431–35. http://dx.doi.org/10.1126/science.abn5642.

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Anthropogenic habitat loss and climate change are reducing species’ geographic ranges, increasing extinction risk and losses of species’ genetic diversity. Although preserving genetic diversity is key to maintaining species’ adaptability, we lack predictive tools and global estimates of genetic diversity loss across ecosystems. We introduce a mathematical framework that bridges biodiversity theory and population genetics to understand the loss of naturally occurring DNA mutations with decreasing habitat. By analyzing genomic variation of 10,095 georeferenced individuals from 20 plant and anima

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Joshi, Sivendra, J. P. Jaiswal, and Anil Kumar. "Estimation of Genetic Diversity among Bread Wheat (Triticum aestivum L. em. Thell) Genotypes." Journal of Scientific Research and Reports 30, no. 7 (2024): 953–62. http://dx.doi.org/10.9734/jsrr/2024/v30i72205.

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Triticum aestivum L. em. Thell, known as bread wheat, is a vital staple crop globally, contributing significantly to caloric and protein intake. Its hexaploid nature, comprising three genomes (AA, BB, DD), resulted from natural hybridization, enhancing its agricultural significance. The advent of high-yielding cultivars during the Green Revolution drastically increased wheat yields, and its adaptability and self-pollinating characteristics further solidified its importance in food production. Genetic diversity within Triticum aestivum is crucial for improving traits such as stress tolerance an

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Afolayan, G., S. P. Deshpande, S. E. Aladele, et al. "Genetic diversity assessment of sorghum (Sorghum bicolor (L.) Moench) accessions using single nucleotide polymorphism markers." Plant Genetic Resources: Characterization and Utilization 17, no. 5 (2019): 412–20. http://dx.doi.org/10.1017/s1479262119000212.

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AbstractSorghum (Sorghum bicolor (L.) Moench) is an important resource to the national economy and it is essential to assess the genetic diversity in existing sorghum germplasm for better conservation, utilization and crop improvement. The aim of this study was to evaluate the level of genetic diversity within and among sorghum germplasms collected from diverse institutes in Nigeria and Mali using Single Nucleotide Polymorphic markers. Genetic diversity among the germplasm was low with an average polymorphism information content value of 0.24. Analysis of Molecular Variation revealed 6% variat

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Teodorovic, Smilja, John M. Braverman, and Heidi G. Elmendorf. "Unusually Low Levels of Genetic Variation among Giardia lamblia Isolates." Eukaryotic Cell 6, no. 8 (2007): 1421–30. http://dx.doi.org/10.1128/ec.00138-07.

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ABSTRACT Giardia lamblia, an intestinal pathogen of mammals, including humans, is a significant cause of diarrheal disease around the world. Additionally, the parasite is found on a lineage which separated early from the main branch in eukaryotic evolution. The extent of genetic diversity among G. lamblia isolates is insufficiently understood, but this knowledge is a prerequisite to better understand the role of parasite variation in disease etiology and to examine the evolution of mechanisms of genetic exchange among eukaryotes. Intraisolate genetic variation in G. lamblia has never been esti

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Graustein, Andrew, John M. Gaspar, James R. Walters, and Michael F. Palopoli. "Levels of DNA Polymorphism Vary With Mating System in the Nematode Genus Caenorhabditis." Genetics 161, no. 1 (2002): 99–107. http://dx.doi.org/10.1093/genetics/161.1.99.

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AbstractSelf-fertilizing species often harbor less genetic variation than cross-fertilizing species, and at least four different models have been proposed to explain this trend. To investigate further the relationship between mating system and genetic variation, levels of DNA sequence polymorphism were compared among three closely related species in the genus Caenorhabditis: two self-fertilizing species, Caenorhabditis elegans and C. briggsae, and one cross-fertilizing species, C. remanei. As expected, estimates of silent site nucleotide diversity were lower in the two self-fertilizing species

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Ørsted, Michael, Erika Yashiro, Ary A. Hoffmann, and Torsten Nygaard Kristensen. "Population bottlenecks constrain host microbiome diversity and genetic variation impeding fitness." PLOS Genetics 18, no. 5 (2022): e1010206. http://dx.doi.org/10.1371/journal.pgen.1010206.

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It is becoming increasingly clear that microbial symbionts influence key aspects of their host’s fitness, and vice versa. This may fundamentally change our thinking about how microbes and hosts interact in influencing fitness and adaptation to changing environments. Here we explore how reductions in population size commonly experienced by threatened species influence microbiome diversity. Consequences of such reductions are normally interpreted in terms of a loss of genetic variation, increased inbreeding and associated inbreeding depression. However, fitness effects of population bottlenecks

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Dupont, Magali S. J., Vincent Guillemot, Pascal Campagne, et al. "Host genetic control of natural killer cell diversity revealed in the Collaborative Cross." Proceedings of the National Academy of Sciences 118, no. 10 (2021): e2018834118. http://dx.doi.org/10.1073/pnas.2018834118.

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Natural killer (NK) cells are innate effectors armed with cytotoxic and cytokine-secreting capacities whose spontaneous antitumor activity is key to numerous immunotherapeutic strategies. However, current mouse models fail to mirror the extensive immune system variation that exists in the human population which may impact on NK cell-based therapies. We performed a comprehensive profiling of NK cells in the Collaborative Cross (CC), a collection of novel recombinant inbred mouse strains whose genetic diversity matches that of humans, thereby providing a unique and highly diverse small animal mo

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Huang, Bin, Zhongwei Wang, Jianjian Huang, et al. "Population Genetic Structure Analysis Reveals Significant Genetic Differentiation of the Endemic Species Camellia chekiangoleosa Hu. with a Narrow Geographic Range." Forests 13, no. 2 (2022): 234. http://dx.doi.org/10.3390/f13020234.

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In order to protect and utilize the germplasm resource better, it is highly necessary to carry out a study on the genetic diversity of Camellia chekiangoleosa Hu. However, systematic research on population genetics analysis of the species is comparatively rare. Herein, 16 highly variable simple sequence repeat (SSR) markers were used for genetic structure assessment in 12 natural C. chekiangoleosa populations. The genetic diversity of C. chekiangoleosa was low (h = 0.596), within which, central populations (such as Damaoshan (DMS), Sanqingshan (SQS), and Gutianshan (GTS)) at the junction of fo

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Shapcott, A. "Genetic and Ecological Variation in Atherosperma moschatum and the Implications for Conservation of Its Biodiversity." Australian Journal of Botany 42, no. 6 (1994): 663. http://dx.doi.org/10.1071/bt9940663.

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Population genetics and ecology of Atherosperma moschatum Labill. (sassafras), a major canopy tree of Australian temperate rainforests, were examined and used to identify priorities and strategies for conservation of its genetic diversity. The genetic diversity among populations was fairly low, but higher than average for long-lived late successional or wind dispersed species (Hamrick and Godt 1989). Genetic distances between populations were correlated with geographic distances and climatic differences. The major genetic differentiation was between the mainland populations and those in Tasman

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Creasey, Alison, Sodsri Thaithong, David Walliker, et al. "Genetic Diversity of Plasmodium falciparum Shows Geographical Variation." American Journal of Tropical Medicine and Hygiene 42, no. 5 (1990): 403–13. http://dx.doi.org/10.4269/ajtmh.1990.42.403.

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Honjo, T., and S. Habu. "Origin of Immune Diversity: Genetic Variation and Selection." Annual Review of Biochemistry 54, no. 1 (1985): 803–30. http://dx.doi.org/10.1146/annurev.bi.54.070185.004103.

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Wang, W. X., S. Q. Xiang, Q. G. Guo, X. L. Li, Q. He, and G. L. Liang. "GENOME VARIATION AND GENETIC DIVERSITY OF TRIPLOID LOQUATS." Acta Horticulturae, no. 887 (January 2011): 55–58. http://dx.doi.org/10.17660/actahortic.2011.887.6.

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Harrigan, George G., Susan Martino-Catt, and Kevin C. Glenn. "Metabolomics, metabolic diversity and genetic variation in crops." Metabolomics 3, no. 3 (2007): 259–72. http://dx.doi.org/10.1007/s11306-007-0076-0.

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Samir, Octavianto, Mohammad Mukhlis Kamal, Rahmat Kurnia, Sekar Larashati, Triyanto, and Mey Ristanti Widoretno. "Morphometric and Genetic Variations of Freshwater Eels (Anguilla spp.) in Poso River, Central Sulawesi: Implications for Conservation Strategies." LIMNOTEK Perairan Darat Tropis di Indonesia 30, no. 2 (2024): 1–17. https://doi.org/10.55981/limnotek.2024.5582.

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The freshwater eel, Anguillids, is a valuable nutrition and commodity fish found in various freshwater environments. However, the world's population of Anguillids are declining because of habitat degradation, pollution, and barriers to migration, all of which are prevalent threats to freshwater ecosystems such as the Poso River in Central Sulawesi. Establishing conservation areas is one of the efforts to protect Anguillids and their habitats, which requires information on the anguillids morphometrics and genetics, where high morphometric and genetic variations are indicators of adaptation or e

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Kaviriri, David Kombi, Qinhui Zhang, Xinxin Zhang, et al. "Phenotypic Variability and Genetic Diversity in a Pinus koraiensis Clonal Trial in Northeastern China." Genes 11, no. 6 (2020): 673. http://dx.doi.org/10.3390/genes11060673.

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Combining phenotypic and genetic characteristics in a genetic variation study is of paramount importance to effectively orient the selection of producers’ elite trees in a seed orchard. In total, 28 phenotypic characteristics and 16 microsatellite loci were used to analyze the clonal genetic variation, to characterize the genetic diversity, and to refine the genetic classifications of 110 Pinus koraiensis clones grown in the Naozhi orchard in northeastern China. All clones were significantly different in most traits. Most of the phenotypic characteristics showed great genetic variation among c

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Klimenko, Irina, Nikolay Kozlov, Anastasia Shamustakimova, and Vladimir Dushkin. "INVESTIGATION OF FORAGE CROPS GENETIC DIVERSITY USING MOLECULAR DNA MARKERS." Adaptive Fodder Production 2019, no. 4 (2019): 89–100. http://dx.doi.org/10.33814/afp-2222-5366-2019-4-89-100.

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Genetic diversity is the precondition for any selection program. The collection and exploitation of natural variation from ecotypes and landraces has played a vital role in the improvement of forage crops. The review is devoted to the most important aspects of studying the genetic variation in populations, cultivars, samples and forms of wild and cultivated forage plants. The factors with negative impact on the biodiversity conservation have been determined. The main types of genetic markers that used for genetic recourses of perennial grasses evaluation were described. Particular attention wa

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Sanders, Ian R. "Intraspecific genetic variation in arbuscular mycorrhizal fungi and its consequences for molecular biology, ecology, and development of inoculum." Canadian Journal of Botany 82, no. 8 (2004): 1057–62. http://dx.doi.org/10.1139/b04-094.

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It has been known for some time that different arbuscular mycorrhizal fungal (AMF) taxa confer differences in plant growth. Although genetic variation within AMF species has been given less attention, it could potentially be an ecologically important source of variation. Ongoing studies on variability in AMF genes within Glomus intraradices indicate that at least for some genes, such as the BiP gene, sequence variability can be high, even in coding regions. This suggests that genetic variation within an AMF may not be selectively neutral. This clearly needs to be investigated in more detail fo

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Bidyananda, Nongthombam, Imlitoshi Jamir, Karolina Nowakowska, et al. "Plant Genetic Diversity Studies: Insights from DNA Marker Analyses." International Journal of Plant Biology 15, no. 3 (2024): 607–40. http://dx.doi.org/10.3390/ijpb15030046.

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The plant adaptation response to a changing environment depends on the genetic diversity level it possesses. Genetic diversity and a thorough understanding of population indices are pivotal for decoding plant adaptation to dynamic environmental stressors. The development of polymerase chain reaction (PCR)-based molecular markers enables comprehensive population analyses and the precise detection of individuals and groups with unique genetic variations. Various molecular markers have been employed to assess genetic diversity, examine population structure, and delineate cluster patterns within a

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Bally, ISE, GC Graham, and RJ Henry. "Genetic diversity of Kensington mango in Australia." Australian Journal of Experimental Agriculture 36, no. 2 (1996): 243. http://dx.doi.org/10.1071/ea9960243.

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The genetic diversity of Kensington mangoes (Mangifera indica L.) was investigated using random amplified polymorphic DNA (RAPD) analysis. DNA was extracted from leaves of 27 'Kensington Pride', 2 'R2E2' and 1 seedling. RAPD analysis with 10 oligonucleotide primers allowed the scoring of 107 markers. The R2E2 trees (20% dissimilarity) and the seedling (10% dissimilarity) were distinct from the Kensington Pride. However, there was very little evidence of significant genetic variation within Kensington Pride selections. Fifteen of the selections were identical in all 107 markers. Only 2 selectio

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Mosseler, A. "Life history and genetic diversity in red pine: implications for gene conservation in forestry." Forestry Chronicle 68, no. 6 (1992): 701–8. http://dx.doi.org/10.5558/tfc68701-6.

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Red pine, Pinus resinosa Ait., is a suffusively rare species throughout its geographical range, occurring as small, highly fragmented populations. Such species are particularly vulnerable to the genetic and demographic stochasticity that can lead to local extinction and losses of genetic variation. Red pine illustrates the difficulty that species with long generation times have in recovering genetic diversity once it has been lost. Tree species that lose their genetic diversity may not recover the genetic variation required for effective adaptive responses to environmental challenges. Populati

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Butlin, R. K., and T. Tregenza. "Levels of genetic polymorphism: marker loci versus quantitative traits." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 353, no. 1366 (1998): 187–98. http://dx.doi.org/10.1098/rstb.1998.0201.

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Species are the units used to measure ecological diversity and alleles are the units of genetic diversity. Genetic variation within and among species has been documented most extensively using allozyme electrophoresis. This reveals wide differences in genetic variability within, and genetic distances among, species, demonstrating that species are not equivalent units of diversity. The extent to which the pattern observed for allozymes can be used to infer patterns of genetic variation in quantitative traits depends on the forces generating and maintaining variability. Allozyme variation is pro

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Cruz-Salazar, Bárbara, Lorena Ruiz-Montoya, Neptalí Ramírez-Marcial, and Maricela García-Bautista. "Relationship Between Genetic Variation and Diversity of Tree Species in Tropical Forests in the El Ocote Biosphere Reserve, Chiapas, Mexico." Tropical Conservation Science 14 (January 2021): 194008292097814. http://dx.doi.org/10.1177/1940082920978143.

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Knowledge of the genetic diversity of species in a biological community is useful for assessing the ecological and evolutionary processes that define the structure and dynamics of that community. We investigated the potential relationship between the trans-specific genetic diversity (or genetic diversity across tree species) and the diversity of tree species in a tropical subdeciduous forest. The nucleotide variation of the concatenated regions ITS 1 and ITS 3 (ITS1-3) was used to determine the trans-specific genetic diversity of 19 species of trees in five local communities at El Ocote Biosph

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Cheng-Wen, Shen, Huang Yi-Huan, Huang Jian-An, Luo Jun-Wu, Liu Chun-Lin, and Liu De-Hua. "RAPD analysis on genetic diversity of typical tea populations in Hunan Province." Chinese Journal of Agricultural Biotechnology 5, no. 1 (2008): 67–72. http://dx.doi.org/10.1017/s147923620800199x.

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AbstractGenetic diversity and genetic variation of 240 adult plants of four tea populations in Hunan – Camellia sinensis var. sinensis, C. sinensis var. assamica cv. Duntsa, C. ptilophylla and C. sinensis var. assamica cv. Jianghua – were studied by rapid amplification of polymorphic DNA (RAPD) markers. The results showed 226 loci using 21 random primers (10 bp), of which 201 (88.9%) were polymorphic. The genetic diversity analysis indicated that Shannon's index was 0.43; 74.7% of which was within-population genetic diversity while 25.3% was among-population variation. The gene diversity index

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Aldhahrani, Adil, and Fayez Althobaiti. "Acacia Gerrardii Leaf Extracts Inhibit Genetic Diversity Induced by Streptozotocin in Male Rats." Biomedical and Pharmacology Journal 12, no. 04 (2019): 1915–22. http://dx.doi.org/10.13005/bpj/1823.

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This study investigated the prevention effect of Acacia gerrardii leaf extracts on genetic variation in male rats exposed to streptozotocin-induced diabetes. Male rats (n=70) were treated with A. gerrardii leaf extract using concentrations ranging from 100 to 500 mg/kg body weight/day for four weeks against streptozotocin-induced possibly genetic variation. Blood samples and pancreatic tissues were collected at the end of the experiment. Ten Inter-Simple Sequence Repeat primers and ten Start Codon Targeted Polymorphism primers were used to detect genetic variations between the different groups

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