Consulta: subjectFacets:"SSR markers"
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Data/hora: 11/06/2024 11:16:36

Genetic diversity analysis of rice cultivars (Oryza sativa L.) differing in salinity tolerance based on RAPD and SSR markers
Provedor de dados: 69
Autores: Kanawapee,Nantawan; Sanitchon,Jirawat; Srihaban,Pranee; Theerakulpisut,Piyada.
Thirty rice cultivars were evaluated for salinity tolerance during the seedling stage and were divided into five tolerance groups including tolerant (T), moderately tolerant (MT), moderately susceptible (MS), susceptible (S) and highly susceptible (HS) which comprised 5, 10, 9, 4 and 2 cultivars respectively. Genetic diversity of all rice cultivars was evaluated using random amplified polymorphic DNA (RAPD) and simple sequence repeats (SSR) markers. The cultivars were evaluated for polymorphisms after amplification with 20 random decamer primers and 20 SSR primer pairs. A total of 161 RAPD markers and 190 SSR alleles were produced which revealed 68.94% and 89.47% polymorphism respectively. Mean genetic similarity coefficient was 0.82 for RAPD and 0.70 for...
Tipo: Journal article
Palavras-chave: Genetic similarity; RAPD markers; Rice; Salinity tolerance; SSR markers.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000600002

The power of 28 microsatellite markers for parentage testing in sheep
Provedor de dados: 69
Autores: Al-Atiyat,Raed M.
Background In sheep breeding, there are situations where relationships recorded at the farm among pedigrees such as parent-offspring, full-sibs or half-sibs need to be tested. A panel of 28 microsatellite (MST) markers was tested to provide accurate pedigree information and resolve the common problem of significant error in pedigree records in Merino sheep. Three different flocks of Australian Merino sheep were investigated. A private farm flock represents a flock with no record availability. Two other flocks were maintained under good managements of full keeping records and being selected for high and low parasite resistances. Results In the studied panel, eight MSTs provided an average of Polymorphic Information content (PIC) equal to 0.65 or more in...
Tipo: Journal article
Palavras-chave: Merino sheep; Paternity verification; Pedigree records; SSR markers.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000200009

Natural selection for efficiency in the use of nitrogen in common bean identified by analysis of microsatellites and grain yield
Provedor de dados: 69
Autores: Leite,Monik Evelin; Lima,Igor Almeida; Pereira,Dyanna Rangel; Santos,João Bosco dos.
This study was carried out in order to verify whether natural selection acts on segregating common bean populations grown in the presence and absence of N, and to verify that natural selection affects the frequency of microsatellite alleles specifically, and in order to identify those that can assist in selection. Four populations from the crosses Ouro Negro x CI-107 and VC-5 x IAPAR-81 were carried forward in bulk to F8 at both levels of N. Ouro Negro and VC-5 are considered stress tolerant to nitrogen and IAPAR-81 and CI-107 responsive. One hundred progenies were obtained from each cross and grown in the presence and absence of N. DNA was extracted from 400 progenies, of which 194 were evaluated in the rainy season and 79 in the winter crop for grain...
Tipo: Journal article
Palavras-chave: Adaptation; Nitrogen use efficiency; Phaseolus vulgaris; SSR markers.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000600005

Analysis of genomic sequences from peanut (Arachis hypogaea)
Provedor de dados: 69
Autores: B,Jayashree; Ferguson,Morag; Ilut,Dan; Doyle,Jeff; Crouch,Jonathan H.
Peanut is an important legume crop across the world. However, in contrast to most legume crops, groundnut lacks taxonomic proximity to any major model genome. A relatively large number of genomic sequences were generated from groundnut as part of a microsatellite marker development project. In the current study, a total of 1312 sequences were analyzed of which 448 contained microsatellite motifs. All sequences (GenBank Accessions: BZ999351-CC000573) were analyzed after clustering for possible similarity with publicly available sequences from Arabidopsis, Lotus, soybean and Medicago. At least 39% of the sequences analyzed had significant BLAST similarities with sequences from the four databases searched, of which nearly half (47%) found significant...
Tipo: Journal article
Palavras-chave: Arachis hypogaea; Codon usage; Gene-based markers; Peanut; SSR markers.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000300002

Pleiotropic effects of the sdw1 locus in barley populations representing different rounds of recombination
Provedor de dados: 69
Autores: Kuczy&amp;#324;ska,Anetta; Miko&amp;#322;ajczak,Krzysztof; &amp;#262;wiek,Hanna.
Background In the present study populations, representing different rounds of recombination were used for the analysis of phenotypic effects associated with the sdw1/denso locus. Other studies have mostly focused only on one type of population. Many different QTLs mapped at the same position as the sdw1/denso locus may indicate a pleiotropy of this gene or a tight linkage between genes conditioning quantitative traits. To date, results of studies have not unequivocally proven either of these two phenomena. Results Both breeding and molecular mapping experiments were undertaken to examine 200 single seed descent (SSD) and 60 doubled haploid (DH) lines obtained from the Maresi (with a semi-dwarfing gene) and Pomo cross combination. They were evaluated for...
Tipo: Journal article
Palavras-chave: DH; Hordeum vulgare L; Quantitative traits; Semi-dwarfing gene; SSD; SSR markers.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000500005

Genetic diversity among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum L. present in Chile
Provedor de dados: 69
Autores: Solano,Jaime; Mathias,Monica; Esnault,Florence; Brabant,Philippe.
Background: The object of this work was to determine the genetic and allelic diversity of Solanum species present in Chile, assessing allelic distribution among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum L., using microsatellite markers. Results: A high level of allelic richness was found in the potatoes studied. The seven microsatellite markers used presented a total of 64 allelic variants among native varieties and commercial cultivars of Solanum tuberosum ssp. tuberosum. The SSR loci generated an average of 9.16 alleles/locus. The group with the highest PIC was that of native varieties collected in the Chiloe archipelago. The high PIC values found indicate that the native varieties from Chiloe have a low level of...
Tipo: Journal article
Palavras-chave: Dendrogram; Germplasm; SSR markers.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000600008

Natural selection in common bean microsatellite alleles and identification of QTLs for grain yield
Provedor de dados: 69
Autores: Leite,Monik Evelin; Santos,João Bosco dos; Carneiro,Flávia Fernandes; Couto,Karla Rodrigues.
Natural selection acts to select better adapted individuals or alleles in segregating population and help plant breeding. The objective of this work was to verify the effect of natural selection on microsatellite alleles as indicators of better adaptation and identification of quantitative trait loci (QTLs) for grain yield. This study evaluated 107 progenies from the F8 and 107 from the F24 generation derived from crossing Carioca MG and ESAL 686 lines, carried out by the bulk method, and evaluated in three different seasons: winter 2001; rainy 2001 and dry 2002. It was utilized 22 polymorphic markers and the natural selection acted in all of them. The frequency of the alleles of the parent Carioca MG, the most adapted, was increased in all of the 22 loci...
Tipo: Journal article
Palavras-chave: Bulk method; Fitness coefficient; Phaseolus vulgaris; SSR markers.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000100005

Compilation of an informative microsatellite set for genetic characterisation of East African finger millet (Eleusine coracana)
Provedor de dados: 69
Autores: De Villiers,Santie M; Michael,Vincent N; Manyasa,Eric O; Saiyiorri,Annis N; Deshpande,Santosh.
Background Genetic diversity of finger millet (Eleusine coracana), a nutritious neglected staple cereal in Africa and South Asia is largely uncharacterized. This study analysed 82 published SSR markers for finger millet across 10 diverse accessions to compile an informative set for genetic characterisation. Extensive optimization compared single samples with bulked leaf or bulked DNA samples for capturing within accession genetic diversity. The markers were evaluated to determine (1) how efficiently they amplified target loci during high-throughput genotyping with a generic PCR protocol, (2) ease of scoring PCR products and (3) polymorphism and ability to discern genetic diversity within the tested finger millet germplasm. Results Across 88 samples, the 52...
Tipo: Journal article
Palavras-chave: Diversity analysis; SSR markers; Genotyping.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000200003

Genetic diversity and population structure analysis of strawberry (Fragaria x ananassa Duch.) using SSR markers
Provedor de dados: 69
Autores: Yoon,Min-Young; Moe,Kyaw Thu; Kim,Dae-Young; Rho,Il-Rae; Kim,Su; Kim,Ki-Taek; Won,Mi-Kyoung; Chung,Jong-Wook; Park,Yong-Jin.
In total, 18 simple sequence repeat (SSR) markers were used to analyze the genetic diversity and population structure of 59 accessions of cultivated strawberry (Fragaria x ananassa Duch.) from Korea, Germany, United States, United Kingdom, and Japan. In total, 101 alleles were detected with an average of 5.6 per locus and 21 specific alleles were identified. Notably, one genotype (Blonoli from Germany) possessed a maximum of 10 different unique alleles specific to each genotype. The gene diversity varied from 0.027 (EMPaEKO1B) to 0.791 (CFACT110), with an average value of 0.509. PIC values ranged from 0.026 to 0.762 (average 0.454). A model-based structure analysis revealed the presence of two populations. The accessions that were clearly assigned to a...
Tipo: Journal article
Palavras-chave: Genetic diversity; Population structure; SSR markers; Strawberry.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000200006

Identification of QTLs for pod and kernel traits in cultivated peanut by bulked segregant analysis
Provedor de dados: 69
Autores: Gomez Selvaraj,Michael; Narayana,Manivannan; Schubert,A. Michael; Ayers,Jamie L; Baring,Michael R; Burow,Mark D.
Bulked segregant analysis was used to identify simple sequence repeat (SSR) markers associated with pod and kernel traits in cultivated peanut, to permit rapid selection of superior quality genotypes in the breeding program. SSR markers linked to pod and kernel traits were identified in two DNA pools (high and low), which were established using selected F2:6 recombinant individuals resulting from a cultivated cross between a runner (Tamrun OL01) and a Spanish (BSS 56) peanut. To identify quantitative trait loci (QTLs) for pod and kernel-related traits, parents were screened initially with 112 SSR primer pairs. The survey revealed 8.9% polymorphism between parents. Of ten SSR primer pairs distinguishing the parents, five (PM375, PM36, PM45, pPGPseq8D9, and...
Tipo: Journal article
Palavras-chave: Maturity; Oil quantity; Quality; SSR markers.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000200003

Cross-genera SSR transferability in cacti revealed by a case study using Cereus (Cereeae, Cactaceae)
Provedor de dados: 74
Autores: Bombonato,Juliana Rodrigues; Bonatelli,Isabel Aparecida Silva; Silva,Gislaine Angélica Rodrigues; Moraes,Evandro Marsola; Zappi,Daniela Cristina; Taylor,Nigel P.; Franco,Fernando Faria.
Abstract The study of transferability of simple sequence repeats (SSR) among closely related species is a well-known strategy in population genetics, however transferability among distinct genera is less common. We tested cross-genera SSR amplification in the family Cactaceae using a total of 20 heterologous primers previously developed for the genera Ariocarpus, Echinocactus, Polaskia and Pilosocereus, in four taxa of the genus Cereus: C. fernambucensis subsp. fernambucensis, C. fernambucensis subsp. sericifer, C. jamacaru and C. insularis. Nine microsatellite loci were amplified in Cereus resulting in 35.2% of success in transferability, which is higher than the average rate of 10% reported in the literature for cross-genera transferability in eudicots....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cactaceae; Cereus; Cross-genera; SSR markers; Transferability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572019000100087

Genetic diversity in a world germplasm collection of tall fescue
Provedor de dados: 74
Autores: Cuyeu,Romina; Rosso,Beatriz; Pagano,Elba; Soto,Gabriela; Fox,Romina; Ayub,Nicolás Daniel.
Festuca arundinacea Schreb., commonly known as tall fescue, is a major forage crop in temperate regions. Recently, a molecular analysis of different accessions of a world germplasm collection of tall fescue has demonstrated that it contains different species from the genus Festuca and allowed their rapid classification into the three major morphotypes (Continental, Mediterranean and Rhizomatous). In this study, we explored the genetic diversity of 161 accessions of Festuca species from 29 countries, including 28 accessions of INTA (Argentina), by analyzing 15 polymorphic SSR markers by capillary electrophoresis. These molecular markers allowed us to detect a total of 214 alleles. The number of alleles per locus varied between 5 and 24, and the values of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SSR markers; Genetic diversity; Flow cytometry; Tall fescue; Genetic resources.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000200014

Genetic characterization of 12 heterologous microsatellite markers for the giant tropical tree Cariniana legalis (Lecythidaceae)
Provedor de dados: 74
Autores: Guidugli,Marcela Corbo; Accoroni,Klaus Alvaro Guerrieri; Mestriner,Moacyr Antonio; Contel,Eucleia Primo Betioli; Martinez,Carlos Alberto; Alzate-Marin,Ana Lilia.
Twelve microsatellite loci previously developed in the tropical tree Cariniana estrellensis were genetically characterized in Cariniana legalis. Polymorphisms were assessed in 28 C. legalis individuals found between the Pardo and Mogi-Guaçu River basins in the state of São Paulo, Brazil. Of the 12 loci, 10 were polymorphic and exhibited Mendelian inheritance. The allelic richness at each locus ranged from 2-11, with an average of 7 alleles per locus, and the expected heterozygosity ranged from 0.07-0.88. These loci showed a high probability of paternity exclusion. The characteristics of these heterologous microsatellite markers indicate that they are suitable tools for investigating questions concerning population genetics in C. legalis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservation; Jequitibá rosa; Population genetics; SSR markers; Transferability.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100022

Genetic structure and a selected core set of brazilian soybean cultivars
Provedor de dados: 74
Autores: Priolli,Regina Helena Geribello; Wysmierski,Philip Traldi; Cunha,Camila Pinto da; Pinheiro,José Baldin; Vello,Natal Antonio.
Soybean is one of the most valuable and profitable oil crop species and a thorough knowledge of the genetic structure of this crop is necessary for developing the best breeding strategies. In this study, a representative collection of soybean cultivars recommended for farming in all Brazilian regions was genotyped using 27 simple sequence repeat (SSR) loci. A total of 130 alleles were detected, with an average allelic number of 4.81 per locus. These alleles determined the core set that best represented this soybean germplasm. The Bayesian analysis revealed the presence of two clusters or subgroups within the whole collection (435 soybean cultivars) and the core set (31 entries). Cultivars of similar origin (ancestral) were clustered into the same groups in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Core collection; Genetic base; Glycine max (L.) Merrill; Bayesian method; SSR markers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300013

Genetic characterization of cassava ( Manihot esculenta ) landraces   in Brazil assessed with simple sequence repeats
Provedor de dados: 74
Autores: Siqueira,Marcos V. B. M.; Queiroz-Silva,Jurema R.; Bressan,Eduardo A.; Borges,Aline; Pereira,Kayo J. C.; Pinto,José G.; Veasey,Elizabeth Ann.
Based on nine microsatellite loci, the aim of this study was to appraise the genetic diversity of 42 cassava ( Manihot esculenta ) landraces from selected regions in Brazil, and examine how this variety is distributed according to origin in several municipalities in the states of Minas Gerais, São Paulo, Mato Grosso do Sul, Amazonas and Mato Grosso. High diversity values were found among the five above-mentioned regions, with 3.3 alleles per locus on an average, a high percentage of polymorphic loci varying from 88.8% to 100%, an average of 0.265 for observed heterozygosity and 0.570 for gene diversity. Most genetic diversity was concentrated within the regions themselves ( H   S   = 0.52). Cluster analysis and principal component based scatter plotting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic diversity; Microsatellites; SSR markers; Traditional farming.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100015

Gene variation and genetic differentiation among populations of the solitary mud dauber wasp Trypoxylon (Trypargilum) albitarse Fabricius 1804 (Hymenoptera, Crabronidae)
Provedor de dados: 74
Autores: Bergamaschi,Antonio C.B.; Lama,Marco A. Del.
Abstract Trypoxylon is a genus of solitary crabronid wasps whose population genetics is poorly known. The purpose of the present study was to investigate the genetic variation and differentiation among five populations of Trypoxylon albitarse, a species widely distributed throughout the Neotropics, with records from Panama to northern Argentina. Eight species-specific microsatellite loci were used for genotyping 96 adult wasps (one female per nest) sampled at five sites in Brazil. The analysis of allelic richness and private alleles indicated high genetic diversity in the populations sampled. Pairwise comparisons using the Fst and Dest indices revealed significant differentiation for all, but one pair of populations. Fst, Dest, AMOVA and assignment test...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Population genetics; Wasps; Crabronidae; SSR markers.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000400519

In situ and genetic characterization of Gossypium barbadense populations from the states of Pará and Amapá, Brazil
Provedor de dados: 86
Autores: Almeida,Vanessa Cavalcante de; Hoffmann,Lúcia Vieira; Yokomizo,Gilberto Ken It; Costa,Joaquim Nunes da; Giband,Marc; Barroso,Paulo Augusto Vianna.
The objective of this work was to characterize the populations of Gossypium barbadense in the states of Amapá and Pará, Brazil. In situ characterization was conducted through interviews with the owners of the plants and environmental observations. Leaf or petal tissue as well as seed samples were collected for genetic characterization by single sequence repeats markers and for storage in germplasm banks, respectively. The plants were maintained in dooryards and used mainly for medical purposes. The genetic analysis showed no heterozygous plants at the loci tested (f = 1), indicating that reproduction occurs mainly through selfing. The total genetic diversity was high (He = 0.39); and a high level of differentiation was observed between cotton plants from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cotton; Genetic diversity; Germplasm; SSR markers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000700011

Morpho-genetic profiling and phylogenetic relationship of guava (Psidium guajava l.) as genetic resources in Pakistan
Provedor de dados: 94
Autores: Kareem,Abdul; Jaskani,Muhammad Jafar; Mehmood,Asim; Khan,Iqrar Ahmad; Awan,Faisal Saeed; Sajid,Muhammad Wasim.
Abstract  Guava (Psidium guajava L.) is an open-pollinated crop having 25-40% dissimilarity index which promotes heterozygosity and adds new cultivars. Morpho-genetic characterization of 37 guava accessions was carried out for genetic variability and structure of guava germplasm located in Punjab province, Pakistan. Principal Component analysis (PCA) was subjected to analyze the morphological diversity and for genetic analysis we applied cluster analysis, using the PyElph software. PCA distributed thirty one traits into six components and first two components accounted 39.5% of total variation. A dendrogram constructed on the basis of morphological traits which showed 34% dissimilarity index among thirty seven guava accessions and divided them into 6...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cross pollinated; Dendrogram; Genetic diversity; Reproducible; SSR markers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000400801

Genome selection in fruit breeding: application to table grapes
Provedor de dados: 63
Autores: Viana,Alexandre Pio; Resende,Marcos Deon Vilela de; Riaz,Summaira; Walker,Michael Andrew.
ABSTRACT Genomic selection (GS) has recently been proposed as a new selection strategy which represents an innovative paradigm in crop improvement, now widely adopted in animal breeding. Genomic selection relies on phenotyping and high-density genotyping of a sufficiently large and representative sample of the target breeding population, so that the majority of loci that regulate a quantitative trait are in linkage disequilibrium with one or more molecular markers and can thus be captured by selection. In this study we address genomic selection in a practical fruit breeding context applying it to a breeding population of table grape obtained from a cross between the hybrid genotype D8909-15 (Vitis rupestris × Vitis arizonica/girdiana), which is resistant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MAS; SSR markers; Linkage disequilibrium; Genomic selection.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200142

Genetic structure and diversity of a soybean germplasm considering biological nitrogen fixation and protein content
Provedor de dados: 63
Autores: Torres,Adalgisa Ribeiro; Grunvald,Anna Karolina; Martins,Talita Busulini; Santos,Maria Aparecida dos; Lemos,Noélle Giacomini; Silva,Luis Antônio Stabile; Hungria,Mariangela.
Biological nitrogen fixation (BNF) has global economic and environmental importance, but has often not been considered in soybean [Glycine max (L.) Merrill] breeding programs. Knowing the genetic diversity and structure of a population within a germoplasm represent a key step for breeding programs. This study aimed at determining the structure of the population and diversity of soybean with regard to BNF and protein content in grain. In total, 191 accessions were evaluated, including 171 commercial soybean cultivars, developed and released by public institutions and private companies in Brazil, and 20 ancestral lines. The genotypes were chosen to represent four genetic groups: 128 Brazilian public genotypes, 20 exotic, and 43 genotypes from private...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BNF; Bradyrhizobium; Glycine max; SSR markers; Symbiosis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000100047

Genetic diversity reduction in improved durum wheat cultivars of Morocco as revealed by microsatellite markers
Provedor de dados: 63
Autores: Henkrar,Fatima; El-Haddoury,Jamal; Ouabbou,Hassan; Nsarellah,Nasserlehaq; Iraqi,Driss; Bendaou,Najib; Udupa,Sripada Mahabala.
ABSTRACT It has been argued that genetic diversity in crop varieties has been on the decline in recent times due to plant breeding. This can have serious consequences for both the genetic vulnerability of crops and their plasticity when responding to changes in production environments. It is, therefore, vital for plant breeding programs to maintain sufficient diversity in the cultivars deployed for multi-period cultivation. In this study, to understand the temporal genetic diversity in durum wheat, 21 improved durum wheat cultivars released in Morocco, since 1956 and five exotic cultivars currently used in crossing programs were analyzed using 13 microsatellite markers. The analysis revealed a total of 44 alleles and average genetic diversity of 0.485 with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum turgidum L. subsp. durum; Cultivar characterization; SSR markers.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200134

การจัดทำลายพิมพ์เอกลักษณ์ดีเอ็นเอของข้าวพันธุ์รับรองและพันธุ์แนะนำของไทย
Provedor de dados: 106
Autores: Varapong Camarerk; Payoam Kobelly; Somsong Chotechuen; Poonsak Mekwattanakarn; Pikul Leelakud; Jittima Wongnongwa.
DNA fingerprints are DNA banding patterns obtaining from DNA samples that have been undergone through molecular genetic processes. These DNA fingerprints can be used to identify the genetic relationships or differences among individuals. DNA fingerprints will be very useful for plant varietal protection in the future, especially for those economically important crops. Regarding to plant varietal protection, an information used to describe agronomic characteristics of a given plant variety should follow Mendelian rules and not be affected by environments. DNA fingerprints of 33 Thai recommended rice varieties were conducted by using 32 DNA markers. The DNA banding patterns at each locus were compared to allele standards that have been conducted from 17 rice...
Tipo: Collection
Palavras-chave: Rice; DNA fingerprint; Fingerprint; Allele standard; SSR markers; ข้าว; ดีเอ็นเอ; ลายพิมพ์เอกลักษณ์; แถบดีเอ็นเอมาตรฐาน; เครื่องหมายโมเลกุล; การคุ้มครองพันธุ์; การตรวจสอบพันธุ์; พันธุ์ข้าว.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5380

Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas
Provedor de dados: 39
Autores: Mäder,Geraldo; Backes,Alice; Reck-Kortmann,Maikel; Freitas,Loreta B.
ABSTRACT Calibrachoa pygmaea is a unique species of Calibrachoa, especially concerning its flower morphology and the environment where it occurs. The species is self-incompatible and is narrowly distributed in wet and flooded fields of the Pampas region. We characterize the genetic diversity of the species based on traditional plastid markers and newly developed nuclear microsatellites to identify drivers that guide its evolution. Our results identified markers that are informative and useful for studying the population structure of C. pygmaea, as well as that of other species of Calibrachoa. Both marker sets were congruent in developing conclusions regarding the evolutionary scenario of C. pygmaea, and revealed that the genetic variability and population...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cross-amplification; Gene flow; Genetic diversity; Plastid haplotypes; Population genetics; SSR markers; Wild petunias.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400664

Population Structure and Genetic Diversity of Sweet Cassava Accessions from the Midwestern, Southeastern and Southern Regions of Brazil
Provedor de dados: 52
Autores: Ortiz,Alex Henrique Tiene; Vidigal Filho,Pedro Soares; Rocha,Vanesca Priscila Camargo; Ferreira,Rebecca Caroline Ulbricht; Gonçalves,Tiago Maretti; Gonçalves-Vidigal,Maria Celeste.
Abstract The objective of this work was to screen sweet cassava accessions collected in smallholding areas in the Midwestern, Southeastern and Southern regions of Brazil, using 15 SSR molecular markers, to determine population structure and genetic diversity. Polymorphism was detected in every loci analyzed, with mean of 6.33 alleles per locus, and mean polymorphism information content (PIC) of 0.6057, pointing out that the primers were highly informative. The observed heterozygosity ranged from 0.0709 (SSRY 101) to 0.9398 (GA 12), with a mean of 0.6511, and mean genetic diversity of 0.6578, ranging from 0.3592 (GA 136) to 0.8116 (SSRY 21). The most dissimilar combinations observed were BGM526PR-BGM596MS, BGM526PR-BGM622MS and BGM526PR-BGM629MS. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Germplasm characterization; Genetic variability; SSR markers.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100206