Consulta: subjectFacets:"Plant genetic resources"
Registros recuperados: 20
Data/hora: 04/06/2024 04:40:00

Etnobotánica del chile quipín (Capsucum annuum var. Glabriusculum) en la sierra gorda y semidesierto de Querétaro
Provedor de dados: 32
Autores: Martínez Torres, Héctor Leonardo.
El chile silvestre, comúnmente denominado piquín (C. annuum var. glabriusculum (Dunal) Heiser &amp; Pickersgill) ha sido identificado como el progenitor y pariente silvestre de las formas domesticadas. En México las poblaciones naturales de este taxón se encuentran ampliamente distribuidas y son aprovechadas por los habitantes del medio rural, a través de la recolección. Las poblaciones silvestres también pueden ser la mejor reserva de germoplasma útil ya que conservan los procesos evolutivos naturales que se presentan en sus poblaciones. A pesar de ello se cuenta con poca información a nivel general sobre su diversidad y formas de utilización tradicional. Esta planta se encuentra presente en el estado de Querétaro en dos regiones, la Sierra Gorda y el...
Tipo: Tesis
Palavras-chave: Recurso fitogenético; Chile silvestre; Producto forestal no maderable; Recolección; Capsicum annuum var. Aviculare; Maestría; Botánica; Wild chili pepper; Plant genetic resources; Non-timber forest product; Collecting; Capsicum annuum var. Aviculare.
Ano: 2007
URL: http://hdl.handle.net/10521/1608

Diversidad de maíces nativos de tres nichos ecológicos del altiplano poblano-tlaxcalteca.
Provedor de dados: 32
Autores: Alvarado Beltrán, Gregorio.
Con la finalidad de evaluar el nivel de diversidad morfológica y genética de maíces nativos de los nichos ecológicos de Libres, Mazapiltepec y Huamantla, correspondientes a los estados de Puebla y Tlaxcala, se desarrolló la presente investigación, la cual se dividió en dos etapas. La primera comprendió una caracterización morfológica, evaluando 134 poblaciones nativas de la región de estudio, siete testigos raciales y tres testigos comerciales, en un diseño experimental látice simple 12 x 12 con dos repeticiones en tres localidades, registrándose 21 caracteres morfológicos. La segunda consistió en un análisis isoenzimático en 49 poblaciones nativas representativas y cinco testigos raciales, explorando diez sistemas enzimáticos que codifican para 19 loci....
Palavras-chave: Zea mays L.; Poblaciones nativas; Recursos fitogenéticos; Variabilidad genética; Landraces; Plant genetic resources; Genetic variability; Doctorado; Genética.
Ano: 2010
URL: http://hdl.handle.net/10521/182

Diversidad de maíces nativos de tres nichos ecológicos del altiplano poblano-tlaxcalteca.
Provedor de dados: 32
Autores: Alvarado Beltrán, Gregorio.
Con la finalidad de evaluar el nivel de diversidad morfológica y genética de maíces nativos de los nichos ecológicos de Libres, Mazapiltepec y Huamantla, correspondientes a los estados de Puebla y Tlaxcala, se desarrolló la presente investigación, la cual se dividió en dos etapas. La primera comprendió una caracterización morfológica, evaluando 134 poblaciones nativas de la región de estudio, siete testigos raciales y tres testigos comerciales, en un diseño experimental látice simple 12 x 12 con dos repeticiones en tres localidades, registrándose 21 caracteres morfológicos. La segunda consistió en un análisis isoenzimático en 49 poblaciones nativas representativas y cinco testigos raciales, explorando diez sistemas enzimáticos que codifican para 19 loci....
Palavras-chave: Zea mays L.; Poblaciones nativas; Recursos fitogenéticos; Variabilidad genética; Landraces; Plant genetic resources; Genetic variability; Doctorado; Genética.
Ano: 2010
URL: http://hdl.handle.net/10521/182

Diversidad morfológica y genética de maíz cacahuacintle en una región de los valles altos de Puebla.
Provedor de dados: 32
Autores: Hernández Galeno, César del Ángel.
La raza de maíz Cacahuacintle cuenta con un área propicia para su cultivo en los valles altos del Estado de Puebla, México. Esta raza, en virtud de sus usos especiales, tiene un nicho de mercado favorable en comparación con el maíz de otras razas; sin embargo, existen pocos trabajos que aborden aspectos relacionados con su cultivo y diversidad. Con la finalidad de caracterizar la diversidad genética y la aptitud para preparar pozole de poblaciones criollas de maíz Cacahuacintle de los Valles Altos de Puebla se realizó un estudio utilizando variables morfológicas, polimorfismo de isoenzimas, y de caracteres físicos, químicos y variables tecnológicas asociadas con la calidad pozolera. El análisis de varianza arrojó diferencias altamente significativas entre...
Palavras-chave: Zea mays L.; Calidad pozolera; Isoenzimas; Recursos fitogenéticos; Variables tecnológicas; Pozole quality; Isozymes; Plant genetic resources; Technological variables; Maestría; Genética.
Ano: 2010
URL: http://hdl.handle.net/10521/203

Diversidad morfológica y genética de maíz cacahuacintle en una región de los valles altos de Puebla.
Provedor de dados: 32
Autores: Hernández Galeno, César del Ángel.
La raza de maíz Cacahuacintle cuenta con un área propicia para su cultivo en los valles altos del Estado de Puebla, México. Esta raza, en virtud de sus usos especiales, tiene un nicho de mercado favorable en comparación con el maíz de otras razas; sin embargo, existen pocos trabajos que aborden aspectos relacionados con su cultivo y diversidad. Con la finalidad de caracterizar la diversidad genética y la aptitud para preparar pozole de poblaciones criollas de maíz Cacahuacintle de los Valles Altos de Puebla se realizó un estudio utilizando variables morfológicas, polimorfismo de isoenzimas, y de caracteres físicos, químicos y variables tecnológicas asociadas con la calidad pozolera. El análisis de varianza arrojó diferencias altamente significativas entre...
Palavras-chave: Zea mays L.; Calidad pozolera; Isoenzimas; Recursos fitogenéticos; Variables tecnológicas; Pozole quality; Isozymes; Plant genetic resources; Technological variables; Maestría; Genética.
Ano: 2010
URL: http://hdl.handle.net/10521/203

Variation of plant and fruit traits in native Mexican costeño pepper
Provedor de dados: 75
Autores: Santiago-Luna,Eric G; Carrillo-Rodríguez,José C; Chávez-Servia,José L; Perales-Segovia,Catarino; Heredia-Garcia,Elena.
ABSTRACT In a collection of costeño peppers conserved by indigenous producers from the municipalities of Santa Maria Tonameca and Santo Domingo de Morelos, Oaxaca, Mexico, a description and classification of agromorphological variation was undertaken by characterization of 46 populations in a greenhouse distributed under complete randomized block design with three replicates. Days to first flowering, plant and fruit traits and yield per plant were evaluated. Significant differences were detected for all traits except for plant height at 120 days after planting. In a principal component analysis, the variables of green and dry weight of 15 fruits, average fruit weight, number of fruits and yield per plant were the characteristics with major descriptive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Phenotypic diversity; Plant genetic resources; Characterization; Multivariate analysis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300399

Plantas da Caatinga ameaçadas de extinção: estudos preliminares e manejo - plano de manejo.
Provedor de dados: 14
Ecologia e distribuição das espécies; causas do processo de extinção; avaliação dos impactos causados pela ameaça de extinção na biodiversidade brasileira; diagnóstico da situação das espécies; metodologia para a conservação das espécies ameaçadas de extinção na Reserva Legal do Projeto Salitre, Juazeiro-BA; proposta de estratégia para a implementação do plano de manejo das espécies estudadas.
Tipo: Livros
Palavras-chave: Plantas em Extinção; Plano de manejo; Bioma Caatinga; Reserva Legal do Projeto Salitre; Myracrodruon urundeuva Allemão; Schinopsis brasiliensis Engler; Sideroxylon obtusifolium Roem &amp; Schult; Umburana; Amburana cearensis; Viabilidade genética; Recurso natural; Caatinga; Planta; Ecologia; Ecologia Vegetal; Biodiversidade; Biological resources; Natural resources; Plant genetic resources; Savannas.
Ano: 2008
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/160098

Contribuição das pesquisas realizadas pela Embrapa Semiárido e instituições parcerias para a cultura da tamareira no Semiárido brasileiro.
Provedor de dados: 14
Autores: RIBEIRO, J. M.; CASTRO, J. M. da C. e; DIAS, R. de C. S.
Neste trabalho é apresentada uma compilação de informações e resultados de estudos realizados pela Embrapa Semiárido acerca da tamareira. As pesquisas foram desde o estabelecimento das plantas no campo experimental da Unidade até a realização de trabalhos para a caracterização de plantas e frutos. Além de reunir estes resultados científicos e tecnológicos, as informações contidas neste documento servem de base para a continuidade de estudos com a tamareira no Semiárido, tendo em vista que, além de outras contribui- ções, relaciona as cultivares com maior potencial de produção na região.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Tamareira; Phoenix dactylifera L; BAG; Trato cultural; Processamento do fruto; Amadurecimento artificial; Palmeira ornamental; Arborizaçao urbana; Tâmara; Palmeira Oleaginosa; Melhoramento Vegetal; Banco de Germoplasma; Variedade; Propagação Vegetativa; Manejo; Doença; Praga; Pós-Colheita; Genetic techniques and protocols; Plant genetic resources.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1135559

Is the genetic integrity of natural plant populations ex situ preserved with the current sampling, conservation and regeneration approaches?
Provedor de dados: 46
Autores: Camadro,E.L.
Acceleration of environment degradation and climate change poses serious threats to both natural and agricultural ecosystems. In fact, the number of endangered plant species at the global level has increased yearly in the last decades, due to anthropic interventions that sum up to the climate change. Samples of natural plant populations, particularly of wild crop relatives, are ex situ conserved in germplasm banks, which have become active in the provision of genetic resources to breeders. The aim of this article is to generate discussion on the adequacy of (a) current protocols for sampling and ex situ conservation of the natural genetic diversity and (b) the actual species paradigm in plants, due to their consequences for this and future generations.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological species; Ex situ conservation; Ex situ regeneration; Plant genetic resources; Taxonomic species.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332014000100005

A multivariate approach to explore the genetic variability in the F2 segregating population of a tomato second cycle hybrid
Provedor de dados: 46
Autores: Cabodevila,V.G; Picardi,L.A; Pratta,G.R.
Segregating progeny from the tomato Second Cycle Hybrids (SCH) that were obtained from crossing RIL (Recombinant Inbred Lines) allows the detection of new genetic combinations that could increase genetic variability in F2 populations. The objectives of the present study were to evaluate eleven tomato quality traits in a segregating F2 population obtained from a SCH and, then, to characterize the molecular diversity by six AFLP (Amplified Fragment Length Polymorphism) primer combinations. Different multivariate analyses were used to assess the degree of concordance among these two approaches to detect genetic variability. Sixty-nine F2 plants were obtained by selfing the SCH (ToUNR18xToUNR1). The parental RIL were derived from an interspecific cross between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant breeding; Plant genetic resources; Fruit quality; AFLP; Multivariate analysis.
Ano: 2017
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332017000100001

In vitro conservation of blackberry genotypes under minimal growth conditions and subsequent large-scale micropropagation
Provedor de dados: 86
Autores: Gomes,Hugo Teixeira; Bartos,Patrícia Monah Cunha; Andrade,Maíra Teixeira de; Almeida,Raphael Ferreira; Lacerda,Luciana Florencio de; Scherwinski-Pereira,Jonny Everson.
Abstract: The objective of this work was to evaluate the micropropagation of blackberry (Rubus spp.) cultivars, after in vitro conservation under minimal growth conditions. Nodal segments of the 'Guarani', 'Caingangue', 'Ébano', and 'Xavante' genotypes were conserved under minimal growth conditions at 20ºC, for 15 months. Microshoots were regenerated and multiplied by up to five successive subcultures, when they were rooted and acclimatized. After 30 days of acclimatization in a greenhouse, rooted plantlets showed no significant losses. Blackberry cultivars can be conserved in vitro for 15 months, without subcultures and, after this time, they can be micropropagated on a large-scale, maintaining the regenerative potential and multiplication.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rubus; Ex situ conservation; Plant genetic resources; Plant propagation; Slow-growth.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201286

Evolutionary dynamics of Cucurbita argyrosperma from the Mesoamerican domestication center using SSR molecular markers
Provedor de dados: 86
Autores: Priori,Daniela; Villarreal,Daniel Zizumbo; Ek,Víctor Manuel de Jesús Canché; Limones-Briones,Verónica; Barbieri,Rosa Lía.
Abstract: The objective of this work was to evaluate the evolutionary dynamics of the wild-weedy-domestic gene pool of Cucurbita argyrosperma squash by estimating the levels of genetic diversity and gene flow in the putative area of its domestication. Nine populations were collected, and DNA was extracted from young leaves harvested separately from approximately 20 individuals in each population. The DNA fragments were amplified with eight pairs of SSR primers and separated by electrophoresis in 5% denaturing polyacrylamide gels. Genetic diversity and the amount of gene flow were estimated in the populations, and Bayesian grouping was used to determine the levels of gene infiltration and probability of ancestry. The ethnobotanical exploration indicated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbitaceae; Genetic diversity; Microsatellite markers; Plant genetic resources; Squash.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300287

Structure of the phenotypic variability of fruit and seed traits in natural populations of Eugenia dysenterica dc. (Myrtaceae)
Provedor de dados: 94
Autores: Novaes,Carolina Ribeiro Diniz Boaventura; Mota,Elias Emanuel Silva; Novaes,Evandro; Telles,Mariana Pires de Campos; Chaves,Lázaro José.
Abstract Eugenia dysenterica DC. (cagaita tree) is a fruit tree native to the Brazilian Cerrado. It is a promising species for cultivation, but little basic information exists on the phenotypic diversity and quantitative variation of its fruits and seeds at a population scale. Thus, the present study proposes to estimate the phenotypic parameters of the species’ fruits and seeds based on the variability among mother plants and among subpopulations, thereby aiming to increase knowledge for breeding and conservation of the species. For this, 25 natural subpopulations (local populations) were sampled in five Brazilian states. Within each subpopulation, 20 fruits were collected from each of six sampled mother plants. Data for biomass, transverse and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cagaita; Quantitative variation; Cerrado; Morphometric characterization; Plant genetic resources.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000302001

GENETIC DIVERSITY AND STRUCTURE OF Oenocarpus mapora GERMPLASM CONSERVED AT EASTERN AMAZON
Provedor de dados: 94
Autores: MOURA,ELISA FERREIRA; OLIVEIRA,MARIA DO SOCORRO PADILHA DE; SILVA,DIEHGO TULOZA DA; PONTES,LÍGIA CRISTINE GONÇALVES.
ABSTRACT  The aim of this study was to evaluate the genetic diversity and structure in the germoplasm of Oenocarpus mapora conserved at Eastern Amazon. Thus, 88 individuals were genotyped with five microsatellite loci. These individuals belong to 24 accessions that were sampled in eight sample places of three Brazilian Amazon states conserved at the Active Germplasm Bank (AGB) of Embrapa Eastern Amazon. All loci were polymorphic and they generated 85 alleles with an average of 17 alleles per loci. Total genetic diversity (HE) was 0.48. Sample places were considered genetically distinct, with ?p = 0.354. The analysis of molecular variance (AMOVA) identified that the genetic portion among areas was of 36.14% and within 63.86%. The Nei distances varied from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arecaceae; Molecular markers; Microsatellites; Plant genetic resources.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000400984

Physiological maturity of Luffa cylindrica (L.) Roem. Seeds
Provedor de dados: 124
Autores: Medeiros,Marcelo Gurgel; Silva Neto,José Sisenando de Sênna; Oliveira,Giordanio Bruno Silva; Torres,Salvador Barros; Silveira,Lindomar Maria da.
ABSTRACT Maturation of seeds involves a systematic sequence of physical and physiological alterations observed from fecundation until they become independent of the mother plant. These alterations comprehend a set of steps which prepare them for a successful germination in the future, characterized by the synthesis and accumulation of reserves. Thus, the objective was to evaluate the development and physiological quality of seeds of L. cylindrica accessions during maturation. Fruits of L. cylindrica accessions were harvested from the 10th day after anthesis (DAA) until the 50th DAA, at 10-day intervals. In each harvest, fruit fresh weight was determined, and then the seeds were manually extracted and subjected to the following evaluations: 100-seed weight,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbitaceae; Loofah; Plant genetic resources; Physiological quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000100076

สนธิสัญญาระหว่างประเทศว่าด้วยทรัพยากรพันธุกรรมพืชเพื่ออาหารและการเกษตร
Provedor de dados: 106
Autores: Songkran Chitrakon.
International Treaty on Plant Genetic Resources for Food and Agriculture deals with access and benefit sharing from utilization of plant germplasm. The Treaty is taken care by FAO and innacted since 29 June 2004. The objectives of this treaty are the conservation and sustainable use of plant genetic resources for food and agriculture and the fair and equitable sharing of the benefits arising out of their use, in harmony with the Convention on Biological Diversity, for sustainable agriculture and food security. The mechanism for access and benefit sharing is provided the multilateral system. The contracting parties recognize the sovereign rights of the states over their own plant genetic resources for food and agriculture, including the authority to...
Tipo: Collection
Palavras-chave: Plant genetic resources; Food and agriculture; Treaty; Multilateral system; Access and benefit sharing; Material transfer agreement; ทรัพยากรพันธุกรรมพืช; อาหาร; การเกษตร; สนธิสัญญาระหว่างประเทศว่าด้วยทรัพยากรพันธุกรรมพืชเพื่ออาหารและการเกษตร; การเข้าถึง; การถ่ายโอนวัสดุพันธุกรรม; การแบ่งปันผลประโยชน์; การอนุรักษ์พันธุกรรม.
Ano: 2008
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5267

Evaluation of dry matter yield and essential oil production in 84 accessions of Tanacetum polycephalum Sch.Bip. through multivariate analyses
Provedor de dados: 109
Autores: Alizadeh,Mohammad Ali; Zehtabchi,Fatemeh; Jafari,Ali Ashraf.
Abstract In order to investigate diversity and explain the relationships of essential oil yield with morphological traits, 84 populations T. polycephalum, were sown in the field using randomized complete blocks design (RCBD) with three replicates in Research Institute of Forest and Rangeland, Tehran, Iran in 2013-2014. Data were collected for flowering date, growth degree days (GDD), stem number, plant height, dry matter (DM) yield, essential oil percentage, and essential oil yield. The relationships among traits were determined using correlation, regression and factor analysis. The genetic distance and genotype classification were determined using cluster analysis. DM yield was positively correlated with plant height, canopy cover, stem number and oil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Early flowering date; Genetic variation; Phenotypic correlations; Morphological traits; Plant genetic resources.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100177

Use of microsatellites for evaluation of genetic diversity in cherry tomato
Provedor de dados: 53
Autores: Aguirre,Nelson Ceballos; López,Walter; Orozco-Cárdenas,Martha; Coronado,Yacenia Morillo; Vallejo-Cabrera,Franco.
ABSTRACT Much of the diversity of tomato is found in wild forms, the most important being the Solanum lycopersicum L. var. cerasiforme and S. pimpinellifolium. The objective of this research was to assess the genetic diversity of 30 introductions of cherry tomato with 36 microsatellite molecular markers. The study was conducted at the Plant Transformation Research Center (PTRC) of the University of California. A dendrogram was built using the Dice-Nei and Li similarity index and the UPGMA clustering method, where introductions were differentiated without preserving a distribution pattern obeying the geographical area of origin. A coefficient of genetic differentiation was found (Fst = 0.3474), showing a high genetic differentiation of the introductions;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant genetic resources; Microsatellites; Real-time PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200220

Characterization of tomato generations according to a three-way data analysis
Provedor de dados: 53
Autores: Medico,Ana Paula Del; Cabodevila,Victoria Guadalupe; Vitelleschi,Maria Susana; Pratta,Guillermo Raúl.
ABSTRACT Availability of a three-way data analysis to characterize two consecutive tomato (Solanum lycopersicum) generations is necessary to continue a plant breeding program with less uncertainty. The aim of this work was to analyze tomato fruit quality from F2 and F3 populations by two three-way data analysis: multiple factorial analysis (MFA) and generalized procrustes analysis (GPA). These techniques have the same main objective, searching for a common structure, but they achieve it in different ways. This work evaluated 18 tomato genotypes, represented by individual plants in F2 and selfed families in F3. The same quantitative traits related to fruit quality were measured in both generations. The first two axes of the MFA represented 51.0% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Three-way data analysis; Multiple factorial analysis; Generalized procrustes analysis; Plant breeding; Plant genetic resources.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020000100008

Barley Types and Varieties in Spain: Un panorama histórico
Provedor de dados: 118
Autores: Martínez-Moreno,Fernando; Igartua,Ernesto; Solís,Ignacio.
Barley is currently the most cultivated crop in Spain, with an acreage of about three million ha. Its importance stems from its adaptation to areas with poor soil conditions and water stress. The aim of this work is to describe the historical evolution of barley types and varieties of barley grown by farmers in Spain. A historical review was performed by consulting articles and books on the history, archaeology, and agronomy related to the issue. Different web sites and articles about the current varietal state of barley in Spain were also consulted. Another important information source was the CRF (Centro de Recursos Fitogenéticos, Spanish Center of Plant Genetic Resources) of Spain, where a large collection of landraces is preserved. The first barleys...
Tipo: Journal article
Palavras-chave: Barley; Landraces; Plant genetic resources; Varieties; Plant breeding; Cebada; Mejora vegetal; Recursos fitogenéticos; Variedades; Variedades locales.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100002