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| Registros recuperados: 181 | |
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| Dantas,Ana Carolina Assis; Barroso,Paulo Augusto Vianna; Hoffmann,Lúcia Vieira; Alves,Milena Ferreira; Andrade,Francisco Pereira de. |
| Mocó cotton was the most important crop in Northeastern Brazil. Local varieties had been developed before governmental breeding programs, which should be identified and preserved as a genetic resource. The aim of this work was to select SSR markers which can be used to monitor gene flow from herbaceous to mocó cotton plants, using non transgenic upland cotton as a pollen source. Unique mocó cotton feral populations were identified in the state of Rio Grande do Norte, and mother plants and their seeds were collected. Allele frequencies were studied among fifteen plants from these populations using 64 SSR primer pairs. Ten SSR markers, with alleles exclusive to mocó or upland genotypes, were selected to monitor gene flow by paternity analysis (BNL3627; 2960;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosafety; Molecular markers; Genetic resources. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000100020 |
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| Mateos, Eduardo; Giribet, Gonzalo; Carranza, Salvador. |
| The first records of terrestrial planarians belonging to the family Rhynchodemidae are reported for the Iberian Peninsula. A new endemic species from the Spanish Pyrenees, Microplana nana sp. nov., is described. The characteristic features of this species are: i) small size (8-10 mm) in adult individuals, ii) very long conical penis papilla and iii) absence of seminal vesicle, bursa copulatrix, genito-intestinal duct, and well-developed penial bulb. Moreover, the widespread common European land planarian Microplana terrestris (Müller, 1774) is reported for the first time from the Iberian Peninsula. The two species, M. nana sp. nov. and M. terrestris, are described by means of external morphology using histological sections, and have been characterized by... |
| Tipo: Article / Letter to the editor |
Palavras-chave: New species; ITS-1; Molecular markers; Iberian peninsula; Microplana; Rhynchodemidae; Terricola. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/534286 |
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| BELTRAMINO,ARIEL A.; VOGLER,ROBERTO E.; RUMI,ALEJANDRA; GUZMÁN,LEILA B.; MARTÍN,STELLA M.; PESO,JUANA G.. |
| ABSTRACT The exotic land gastropod Ovachlamys fulgens (Gude, 1900), aka the jumping snail, was registered in Eldorado city, Misiones province, constituting the first documented record of that species in Argentina-and for all of South America as well. Identities of the individuals were confirmed through morphological examination, and by a DNA sequencing of the cytochrome oxidase subunit I gene. DNA sequences for the mitochondrial 16S-rRNA and the nuclear 18S-rRNA genes were also obtained from the morphologically-confirmed specimens to gain insights into the genetic background of this species in Argentina, and as additional markers for enhancing the rapidity of identification by governmental authorities who are responsible for managing the presence of exotic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Introduced species; Misiones province; Molecular markers; Nonnative snail. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401591 |
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| Nunes, Claudinéia Ferreira; Empresa de Pesquisa Agropecuária de Minas Gerais; Ferreira, Juliano Lino; Empresa de Pesquisa Agropecuária de Minas Gerais; Generoso, Andressa Leal; Empresa de Pesquisa Agropecuária de Minas Gerais; Carvalho, Mário Sérgio Dias; Empresa de Pesquisa Agropecuária de Minas Gerais; Pasqual, Moacir; Universidade Federal de Lavras; Cançado, Geraldo Magela de Almeida; Empresa de Pesquisa Agropecuária de Minas Gerais. |
| The strawberry is an important agricultural crop in Brazil. However, most of the commercial genotypes currently in cultivation in Brazil were developed in other countries with environmental adaptations often inadequate for the regional conditions. In this work, inter-simple sequence repeat markers were used to determine the genetic variability and the loci segregation profiles of 84 strawberry hybrids obtained from a genetic breeding program at the ‘Empresa de Pesquisa Agropecuária de Minas Gerais.’ The hybrids were produced from crosses involving the following progenitors: ‘Toyonoka’ x ‘Sweet Charlie’, ‘Camino Real’ x ‘Sweet Charlie’, ‘Oso Grande’ x ‘Sweet Charlie’, ‘Oso Grande’ x ‘Toyonoka’, ‘Dover’ x ‘Oso Grande’, and ‘Camino Real’ x ‘Toyonoka’.... |
| Tipo: Marcadores moleculares |
Palavras-chave: 5.01.03.05-9 genetic dissimilarity; Pre-breeding; Molecular markers Melhoramento Vegetal genetic dissimilarity; Pre-breeding; Molecular markers. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16737 |
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| Souza,Felipe Pinheiro de; Lima,Ed Christian Suzuki de; Leite,Natalia Gonçalves; Urrea-Rojas,Angela Maria; Yamachita,Andrei Lincoln; Pandolfi,Victor César Freitas; Lopera-Barrero,Nelson Mauricio. |
| ABSTRACT: Brycon gouldingi is a species of neotropical fish of socioeconomic and environmental importance in the Tocantins-Araguaia Basin. Genetic studies on this species are still limited, making it difficult to evaluate the population structure and genetic diversity in natural and captive stocks. Here, we aimed to evaluate the transferability of heterologous microsatellite primers in B. gouldingi. A total of 30 primers for eight species were evaluated: Brycon hilarii, Brycon opalinus, Brycon cephalus, Brycon orbignyanus, Prochilodus lineatus, Prochilodus argenteus, Piaractus mesopotamicus, and Colossoma macropomum. The primers that showed the best amplification patterns were applied to 20 specimens of B. gouldingi, and their genetic parameters were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Cross-amplification; Molecular markers; SSR. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100406 |
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| Lourdes Rocha,Carla Maria; Vellicce,Gabriel Ricardo; García,María Gabriela; Pardo,Esteban Mariano; Racedo,Josefina; Perera,María Francisca; de Lucía,Adrian; Gilli,Javier; Bogado,Noelia; Bonnecarrère,Victoria; German,Silvia; Marcelino,Francismar; Ledesma,Fernando; Reznikov,Sebastián; Ploper,Leonardo Daniel; Welin,Bjorn; Castagnaro,Atilio Pedro. |
| Background Asian soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. & Syd., is one of the main diseases affecting soybean and has been reported as one of the most economically important fungal pathogens worldwide. Knowledge of the genetic diversity of this fungus should be considered when developing resistance breeding strategies. We aimed to analyze the genetic diversity of P. pachyrhizi combining simple sampling with a powerful and reproducible molecular technique. Results We employed Amplified Fragment Length Polymorphism (AFLP) technique for the amplification of P. pachyrhizi DNA extracted from naturally SBR-infected plants from 23 production fields. From a total of 1919 markers obtained, 77% were polymorphic. The high percentage of... |
| Tipo: Journal article |
Palavras-chave: Asian soybean rust; Genetic variation; Glycine max; Molecular markers. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600009 |
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| Clement,Charles R.; Sousa,Nelcimar Reis; Rodrigues,Doriane Picanço; Astolfi-Filho,Spártaco; Moreno,Yolanda Núñez; Pascual,Vicente Torres; Rodríguez,Francisco Javier Gallego. |
| Although the first inhabitants of western Amazonia domesticated pejibaye (Bactris gasipaes Kunth, Palmae) or peach palm for its fruits, today it is widely planted for its heart-of-palm. Like other domesticates, pejibaye presents a complex hierarchy of landraces developed before the conquest of the Americas. The existence of three landraces (Pará, Solimões, Putumayo) was proposed along the Amazonas and Solimões Rivers, Brazil, based on morphological characteristics. There are some questions remaining about the intermediate landrace being an artifact of the morphometric analysis. AFLPs were used to evaluate the relationships among samples of these putative landraces. DNA was extracted from 99 plants representing 13 populations maintained in the Pejibaye... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molecular markers; Population differentiation; Genetic resources; Genetic analysis. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000400019 |
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| Della Vecchia,P.T.; Silva,C.A.R. da; Terenciano-Sobrinho,P.. |
| Seed market is becoming global and globalization is growing very fast. To compete favourably in this new global seed world, quality and cost are and will be certanly the key issues. High seed quality can only be obtained by a thorough control of the entire seed production process, step by step from planning to final delivery. That requires science, technology, expertise, experience, good management and certanly, the most important, an absolute and unconditional commitment with quality. Seed testing for quality assurance is one important step in the process of production of high quality seed. In the late years a considerable amount of research has been published, particularly on the use of some Polymerase Chain Reaction DNA based new technologies (RAPD,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Molecular markers; Seed testing; Seed companies; Genetic purity. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500014 |
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| Pati,Prakash G; Datta,Subhojit; Agbagwa,Ikechukwu O; Singh,Indra Prakash; Soren,Khela Ram; Das,Alok; Choudhary,Arbind Kumar; Chaturvedi,Sushil Kumar. |
| Resistance gene analog (RGA)-anchored amplified fragment length polymorphism (AFLP-RGA) marker system was used in order to evaluate genetic relationships among 22 pigeon pea genotypes with varied responses to Fusarium wilt and sterility mosaic disease. Five AFLP-RGA primer combinations (E-CAG/wlrk-S, M-GTG/wlrk-S, M-GTG/wlrk-AS, E-CAT/S1-INV and E-CAG/wlrk-AS) produced 173 scorable fragments, of which 157 (90.7%) were polymorphic, with an average of 31.4 fragments per primer combination. The polymorphism rates obtained with the five primers were 83.3%, 92.0%, 92.3%, 93.0% and 93.1%, respectively. Mean polymorphic information content (PIC) values ranged from 0.24 (with E-CAT/S1-INV) to 0.30 (with E-CAG/wlrk-AS), whereas resolving power (RP) values varied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AFLP-RGA; Cajanus cajan; Genetic diversity; Molecular markers; Polymorphism. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000200007 |
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| Otero,Laura; Ducasse,Daniel; Miller,Robert N. G.. |
| Using PCR-based assays with specific primers for amplification of the ribosomal DNA intergenic spacer region (IGS) and a portion of the mitochondrial DNA small subunit ribosomal RNA gene (mtDNA SSU rRNA), the genetic variability among Verticillium dahliae isolates from olive (Olea europaea) and other host species from Argentina and Brazil was estimated. The derived UPGMA-generated phenograms based upon the restriction fingerprinting data of rDNA IGS products revealed genetic differences, correlating with the host of origin. Isolates infecting olive genetically distinct from those from cocoa (Theobroma cacao) and sunflower (Helianthus annuus). Digestion of mitochondrial DNA SSU rRNA PCR products revealed less variability, distinguishing only one isolate... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Olea europaea; Molecular markers; Characterization. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582004000400015 |
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| Siqueira,MVBM. |
| In Brazil current studies and investments on yams are incipient. Similarly, the literature in recent decades lacks adequate information on this group of plants. The existing literature, on its turn, requires more than ever to be revised and organized. Yams have joined the so-called "neglected" group of crops for several reasons, but particularly because they are associated with poor and traditional communities. Many vegetables introduced in Brazil during the colonization period have adapted to different cropping systems, yams being an excellent example. This diversity resulted very widespread, yet poorly recognized in the country. In turn, the gardens using traditional farming systems continue to maintain and enhance yam local varieties. Studies from other... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioscorea spp.; Tubers; Traditional agriculture; Agrobiodiversity; Molecular markers. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100003 |
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| Payorm Cobelli; Varapong Chamarerk; Poonsak Mekwatanakarn; Phikul Leelagud; Somsong Chotechuen; Sommai Seewisut. |
| SSR molecular markers SSR are tandem arranged repeats of short DNA motifs (1-6 bp in length) distributed throughout the genome that frequently exhibit variation in the number of repeats at the locus of each rice variety. The SSR markers, therefore, are suitable for detecting polymorphisms between closely related genotypes of Thai local rice varieties from the National Rice Germplasm Bank. In this research, DNA fingerprinting was conducted using 8 Thai local rice varieties. i.e., Niaw Sanpahtawng (NSPT_GB), Khao Gaw Diaw (KGD_GB), Niaw Dam (ND_GB), Khao tah Haeng 17 (KTH17_GB), Jao’ Haw (JH_GB), Pin Gaew 56 (PG56_GB), Jek Chuey Gahb Khiaw (JCGK_GB), Sang Yod Pattalung (SYPL_GB), and 5 standard varieties, i.e., Khao Dawk Mali 105 (KDML105_GB, KDML105_C),... |
| Tipo: PhysicalObject |
Palavras-chave: Thai local rice; DNA fingerprinting; Molecular markers; National Rice Germplasm Bank; ข้าวพื้นเมืองไทย; ลายพิมพ์เอกลักษณ์ดีเอ็นเอ; เครื่องหมายโมเลกุล; การเรียงตัวของดีเอ็นเอ; ความใกล้ชิดทางพันธุกรรม; พันธุ์. |
| Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5225 |
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| Registros recuperados: 181 | |
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