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Registros recuperados: 29 | |
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Seidler-Łożykowska, Katarzyna; Institute of Natural Fibres and Medicinal Plants; Kuczyńska, Anetta; Polish Academy of Sciences; Mikołajczyk, Katarzyna; Plant Breeding and Acclimatization Institute; Nowakowska, Joanna; Plant Breeding and Acclimatization Institute; Bocianowski, Jan; Poznań University of Life Sciences. |
In order to estimate genetic diversity among starting materials and breeding strains of caraway, a collection of 17 accessions from botanical gardens in Europe, two cultivars ‘Rekord’ and ‘Kończewicki’, and four own breeding strains were analyzed by RAPD-PCR. The representative samples, each of five individual plants of accession, cultivar or strain, were taken from young rosette leaves. Forty of Genset Oligos RAPD primers were used for analysis and eight of them produced clear and reproducible banding patterns. In total, 62 banding patterns were obtained revealing 23 polymorphic bands, whereas the number of polymorphic bands ranged from two to four for one primer. The GS12 and GS43 primers generated two polymorphic bands, while each of the GS8, GS21,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carum carvi L.; Genetic distance; Genotype; RAPD. |
Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18197 |
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Giordani,Willian; Scapim,Carlos Alberto; Ruas,Paulo Maurício; Ruas,Claudete de Fátima; Contreras-Soto,Rodrigo; Coan,Marlon; Fonseca,Inês Cristina de Batista; Gonçalves,Leandro Simões Azeredo. |
ABSTRACT Maize is one of the species with greater genetic diversity among cereals and possibly the most diverse crop species known. Accessing this variability is essential for maize breeding, allowing breeders to achieve progress of yield increasing, overcome environmental challenges or deal with pests and diseases. Among the maize diseases, southern rust is one of the most important, causing significant losses in yield and presenting severe epidemics worldwide. In the present study, the AFLP technique was applied to analyze population structure and genetic diversity among 145 tropical maize inbred lines, and to test for preliminary evidence of association between AFLP markers and the reaction to southern rust. Disease severity was evaluated in two crop... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Gwas; Association studies; Cluster analysis; Genetic distance; Puccinia polysora. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200183 |
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Mori,Edson S; Martins,Dagoberto; Velini,Edivaldo D; Marino,Celso L; Gouvêa,Cantídio F; Leite,Suzi M.M; Camacho,Edwin; Guries,Raymond P. |
The aquatic plant species Egeria densa (Planch.) Casp and E. najas Planchon occur naturally in the Paraná River Basin of southeastern Brazil. Hydroelectric dam construction in the river basin has created several lakes, changing the ecology of the river and altering the population ecology of Egeria. Large, dense populations of Egeria now grow in Jupiá Lake and its tributaries, occasionally blocking hydroelectric turbines. This study is part of a larger project examining environmental changes associated with large dam projects; the research objective of this study was to assess patterns of genetic diversity in Egeria populations growing in Jupiá and Três Irmãos Lakes and their Paraná River tributaries using genetic markers. Forty-two plants of E. najas and... |
Tipo: Journal article |
Palavras-chave: Egeria; Dam; Isoenzyme; Genetic distance; RAPD; Reservoir. |
Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200008 |
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Carrasco,Basilio; Díaz,Carole; Moya,Mario; Gebauer,Marlene; García-González,Rolando. |
The genetic characterization of 29 elite Japanese plum cultivars (Prunus salicina) and 4 Prunus cultivars was carried out by analyzing 97 Simple Sequence Repeat (SSR) alleles and 232 binary Inter Simple Sequence Repeat (ISSR) loci. A high level of genetic variability was found for these two molecular markers among the Japanese plum cultivars compared to other Prunus species. On average, the variability found by analyzing the SSR alleles were Na = 12.1, Ne = 5.2, Ho = 0.9, He = 0.8 and F= -0.127, whereas ISSR yielded values of h = 0.15 and I = 0.27. The genetic relationship among cultivars was estimated with Principal Coordinate Analysis (PCA) and a Bayesian clustering approach using the software program Structure. This program identified two subgroups... |
Tipo: Journal article |
Palavras-chave: AMOVA; Bayesian analysis; Genetic distance; PCA; Plum; Structure. |
Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300012 |
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Limeira,Daniel M.; Renesto,Erasmo; Zawadzki,Cláudio H.. |
Two allopatric morphotypes of the genus Rinelocaria were compared through the allozyme electrophoresis technique: one morphotype, R. pentamaculata, from the Keller River in the middle stretch of the Ivaí River basin and the other, R. aff. pentamaculata, from the São João River in the upper portion of the Ivaí River basin. The morphotype from the São João River was collected upstream from the São João waterfall, which is about 80 m deep. Twelve enzymatic systems (AAT, ADH, EST, GCDH, G3PDH, GPI, IDH, LDH, MDH, ME, PGM and SOD) were analyzed, which allowed to score 22 loci. Only loci Aat-2, Est-3 and Mdh-C showed polymorphism. The two samples differed in allele frequencies at the three polymorphic loci. The average expected heterozygosity for all loci was... |
Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Allozymes; Fish genetics; Genetic distance; Polymorphism; Loricariidae; Pisces. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200034 |
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Ito,Kennya F.; Renesto,Erasmo; Zawadzki,Cláudio H.. |
Two syntopic morphotypes of the genus Hypostomus - H. nigromaculatus and H. cf. nigromaculatus (Atlântico Stream, Paraná State) - were compared through the allozyme electrophoresis technique. Twelve enzymatic systems (AAT, ADH, EST, GCDH, G3PDH, GPI, IDH, LDH, MDH, ME, PGM and SOD) were analyzed, attributing the score of 20 loci, with a total of 30 alleles. Six loci were diagnostic (Aat-2, Gcdh-1, Gpi-A, Idh-1, Ldh-A and Mdh-A), indicating the presence of interjacent reproductive isolation. The occurrence of few polymorphic loci acknowledge two morphotypes, with heterozygosity values He = 0.0291 for H. nigromaculatus and He = 0.0346 for H. cf. nigromaculatus. F IS statistics demonstrated fixation of the alleles in the two morphotypes. Genetic identity (I)... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allozymes; Hypostomus nigromaculatus; Fish genetics; Genetic distance; Polymorphism. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100008 |
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Oliveira,Joelliton Domingos de; Igarashi,Maria Luiza Silveira de Paiva; Machado,Théa Mírian Medeiros; Miretti,Marcos Mateo; Ferro,Jesus Aparecido; Contel,Eucleia Primo Betioli. |
The genetic relationships and structure of fourteen goat (Capra hircus) populations were estimated based on genotyping data from 14 goat populations (n = 410 goats) at 13 microsatellite loci. We used analysis of molecular variance (AMOVA), principal component analysis (PCA) and F statistics (F IS, F IT and F ST) to evaluate the genetic diversity (Ho, He and ad) of the goats. Genetic distances between the 14 goat populations were calculated from allelic frequency data for the 13 microsatellite markers. Moderate differentiation was observed for the populations of the undefined breeds (including the Anglo-Nubian-M breed), the naturalized Brazilian breeds (Moxotó, Canindé), the exotic purebred breeds (Alpine, Saanen, Toggenbourg and Anglo-Nubian) and the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Goat; Microsatellite; Genetic distance; PCA; AMOVA; Genetic relationships; Genetic diversity; F statistics. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300010 |
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Song,Xing-bo; Zhou,Yi; Ying,Bin-wu; Wang,Lan-lan; Li,Yi-song; Liu,Jian-feng; Bai,Xiao-gang; Zhang,Lei; Lu,Xiao-jun; Wang,Jun; Ye,Yuan-xin. |
In the present study, we investigated the application of 13 short tandem repeat (STR) loci (D13S317, D7S820, TH01, D16S539, CSFIPO, VWA, D8S1179, TPOX, FGA, D3S1358, D21S11, D18S51 and D5S818) routinely used in forensic analysis, for delineating population relationships among seven human populations representing the two major geographic groups, namely the southern and northern Chinese. The resulting single topology revealed pronounced geographic and population partitioning, consistent with the differences in geographic location, languages and eating habits. These findings suggest that forensic STR loci might be particularly powerful tools in providing the necessary fine resolution for reconstructing recent human evolutionary history. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forensic medicine; Population genetics; Short-tandem repeat; Human evolutionary history; Genetic distance. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000400002 |
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Barroso,Paulo Augusto Vianna; Geraldi,Isaias Olívio; Vieira,Maria Lúcia Carneiro; Pulcinelli,Carlos Eduardo; Vencovsky,Roland; Dias,Carlos Tadeu dos Santos. |
In order to verify whether genetic distance (GD) is associated with population mean (PM), genetic variance (GV) and the proportion of superior progenies generated by each cross in advanced generations of selfing (PS), the genetic distances between eight soybean lines (five adapted and three non-adapted) were estimated using 213 polymorphic RAPD markers. The genetic distances were partitioned according to Griffing's Model I Method 4 for diallel analysis, i.e., GDij = GD+ GGDi+ GGDj + SGDij. Phenotypic data were recorded for seed yield and plant height for 25 out of 28 populations of a diallel set derived from the eight soybean lines and evaluated from F2:8 to F2:11 generations. No significant correlation for seed yield was detected between GD and GV, while... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soybean; Genetic distance; Molecular markers; RAPD; Prediction. |
Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000300020 |
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Araújo,Adriana Mello de; Guimarães,Simone Eliza Facioni; Machado,Thea Mírian Medeiros; Lopes,Paulo Sávio; Pereira,Carmen Silva; Silva,Francisco Luiz Ribeiro da; Rodrigues,Marcelo Teixeira; Columbiano,Virgínia de Souza; Fonseca,Cleusa Graça da. |
Brazilian naturalized goat breeds are adapted to the semiarid conditions prevalent in the Northeast region of the country (which has the largest Brazilian goat heard) and represent an as yet uninvestigated source of genetic diversity. Currently, imported goat breeds are crossed with Brazilian naturalized goat breeds, endangering the genetic potential of the naturalized breeds. We used 11 microsatellite markers to determine the genetic diversity among imported (non-naturalized) dairy Alpine and Saanen goats and naturalized Brazilian Moxotó goats. We genotyped 292 goats from three herds (one private, one from the University of Minas Gerais and the Moxotó conservation herd from Embrapa Caprinos) and found that the general heterozygosity was 0.6952 for Alpine,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; DNA microsatellite; Genetic distance; Genetic diversity; Goats. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100014 |
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Tambasco-Talhari,Daniella; Alencar,Maurício Mello de; Paz,Cláudia Cristina Paro de; Cruz,Geraldo Maria da; Rodrigues,Armando de Andrade; Packer,Irineu Umberto; Coutinho,Luiz Lehmann; Regitano,Luciana Correia de Almeida. |
Several studies have investigated the relationship between heterozygosity, genetic distance and production traits. The objective of the present study was to evaluate the influence of the degree of heterozygosity and genetic distance on growth, carcass and reproductive related features in F1 bovine crosses. We tested 10 polymorphic markers in 330 purebred cattle (Nelore, Canchim, Aberdeen Angus and Simental) and 256 crossbred cattle belonging to four crossbred groups. Individual heterozygosities (Hi) and multilocus genetic similarity (Dm) were estimated and used in correlation analysis against individual phenotypic measurements. Significant (p < 0.05) Hi effects occurred for birth weight, 15 to 18 month weight, hot carcass weight and longissimus rib eye... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine crosses; Molecular markers; Heterozygosity; Genetic distance; Production traits. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200007 |
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Kappes, H.. |
Blood-feeding terrestrial leeches of the family Haemadipsidae are a notorious part of the invertebrate diversity in Asian and Australian rain forests. All hitherto published records of terrestrial leeches of Borneo belong to the genus Haemadipsa. Here, a second, poorly known haemadipsid genus is reported from Mount Kinabalu and Crocker Range National Park. The individuals were barcoded and compared to sequences available in GenBank. The results show that the genus Tritetrabdella has representatives in the Indochinese and the Sundaic bioregions. All six specimens from Borneo are from a single new Tritetrabdella lineage, T. kinabaluensis spec. nov. Within the Bornean lineage, two groups differing 4-5% in the COI barcoding sequence were identified. Because 1)... |
Tipo: Article / Letter to the editor |
Palavras-chave: Annelida; Clitellata; Ecological specialization; Genetic distance; Parasite; Phylogeny; Speciation; Tropical mountains; 42.76; 42.64. |
Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/462900 |
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Registros recuperados: 29 | |
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