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Registros recuperados: 30
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Agricultural biodiversity in Southern Brazil: integrating efforts for conservation and use of Neglected and Underutilized Species. Repositório Alice
BARBIERI, R. L.; GOMES, J. C. C.; ALERCIA, A.; PADULOSI, S..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Biocultural diversity; Landraces; Native fruits; Nutrition; Family farming; Genetic resources; On farm conservation; Ex situ conservation; Farmers; Knowledge.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/980327
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Agronomic evaluation and morphological characterization of chili peppers (Capsicum annuum, Solanaceae) from Brazil. Repositório Alice
PADILHA, H. K. M.; SIGALES, C. V.; VILLELA, J. C. B.; VALGAS, R. A.; BARBIERI, R. L..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genebank; Genetic resources; Ex situ conservation; Genetic variability; Genebank; Genetic resources; Ex situ conservation; Genetic variability.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1060263
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Characterization of bioactive compounds, antioxidant activity and minerals in landraces of pumpkin (Cucurbita moschata) cultivated in Southern Brazil. Repositório Alice
PRIORI, D.; VALDUGA, E.; VILLELA, J. C. B.; MISTURA, C. C.; VIZZOTTO, M.; VALGAS, R. A.; BARBIERI, R. L..
2017
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pumpkin; Cucurbitaceae; Ex situ conservation; Genetic resources; Characterization.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1069184
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Characterization of bioactive compounds, antioxidant activity and minerals in landraces of pumpkin (Cucurbita moschata) cultivated in Southern Brazil. Repositório Alice
PRIORI, D.; VALDUGA, E.; VILLELA, J. C. B.; MISTURA, C. C.; VIZZOTTO, M.; VALGAS, R. A.; BARBIERI, R. L..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pumpkin; Cucurbitaceae; Ex situ conservation; Genetic resources; Characterization.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1058213
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Characterization of bioactive compounds, antioxidant activity and minerals in landraces of pumpkin (Cucurbita moschata) cultivated in Southern Brazil Ciênc. Tecnol. Aliment.
PRIORI,Daniela; VALDUGA,Eduardo; VILLELA,Juliana Castelo Branco; MISTURA,Claudete Clarice; VIZZOTTO,Márcia; VALGAS,Ricardo Alexandre; BARBIERI,Rosa Lía.
Abstract The objective of this work was to evaluate the genetic variability for the synthesis of bioactive compounds and minerals in pumpkin (Cucurbita moschata) landraces. Total phenolic compounds, carotenoids, antioxidant activity and minerals were evaluated in 10 accessions of Cucurbita moschata landraces from the Genebank of Embrapa Temperate Agriculture (Pelotas - RS, Brazil). Twenty plants of each accession were cultivated in the field during the spring/summer of 2013/2014. After harvesting of mature fruits, the seeds were discarded and opposite longitudinal portions of the pulp were manually prepared for analysis of the bioactive compounds. For the determination of minerals, pumpkin samples were frozen in plastic bags, and after freeze-dried and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pumpkin; Cucurbitaceae; Ex situ conservation; Genetic resources; Characterization.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000100033
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Crop Genetic Resources: An Economic Appraisal AgEcon
Day-Rubenstein, Kelly A.; Heisey, Paul W.; Shoemaker, Robbin A.; Sullivan, John; Frisvold, George B..
Crop genetic resources are the basis of agricultural production, and significant economic benefits have resulted from their conservation and use. However, crop genetic resources are largely public goods, so private incentives for genetic resource conservation may fall short of achieving public objectives. Within the U.S. germplasm system, certain crop collections lack sufficient diversity to reduce vulnerability to pests and diseases. Many such genetic resources lie outside the United States. This report examines the role of genetic resources, genetic diversity, and efforts to value genetic resources. The report also evaluates economic and institutional factors influencing the flow of genetic resources, including international agreements, and their...
Tipo: Report Palavras-chave: Genetic resources; Genetic diversity; Germplasm; R&D; International transfer of genetic resources; In situ conservation; Ex situ conservation; Gene banks; Intellectual property.; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2005 URL: http://purl.umn.edu/59388
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Cryopreservation of Coffea arabica L. zygotic embryos by vitrification. Repositório Alice
FREITAS, R. T. da; PAIVA, R.; SALES, T. S.; SILVA, D. P. C. da; REIS, M. V. dos; SOUZA, A. C. de; ROSA, S. D. V. F. da.
As a consequence of the difficulty in conventional coffee seed storage, biotechnological alternatives such as cryopreservation have been investigated. The objective of this study was to develop a protocol for the cryopreservation of Coffea arabica L. (cv. ?Catuaí Vermelho? - IAC 144) zygotic embryos by vitrification. For the cryopreservation study, the embryos were immersed in Plant Vitrification Solution 2 at different times (0, 10, 25, 50, 100, and 250 min) and two temperatures (0 and 25 °C). Subsequently, the best thawing time was determined in a water bath (1, 3, 5 minutes or directly in Recovery Solution). An anatomical study was conducted on non-stored and stored embryos, with or without the use of Plant Vitrification Solution 2. The immersion in...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Liquid nitrogen; PVS2; TTC test; Ex situ conservation; Histology; Thawing.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1065188
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Cryopreservation of coffee seeds: a simplified method. Repositório Alice
COELHO, S. V. B; ROSA, S. D. V. F. da; FERNANDES, J. S..
Coffee seeds are sensitive to desiccation and to storage. Advances in the technique of cryopreservation of these seeds have been achieved in recent years, and the aim of this study was to evaluate Coffea arabica seeds cryopreserved through direct immersion in liquid nitrogen after rapid and slow drying. Seeds of the cultivars ?Arara?, ?Catiguá?, ?Catuaí Amarelo? and ?Mundo Novo? underwent rapid and slow drying to 20% moisture content (dry basis); they were then immersed in liquid nitrogen for 24 hours and after that, reheated in a water bath. C. arabica seeds have better physiological quality after slow drying, but rapid drying is better for cryopreservation of these seeds. The seeds of the cultivars investigated have different levels of tolerance, but all...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffea arabica; Coffea arabica; Plant genetic resources; Genetic variation; Germplasm; Ex situ conservation.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1083508
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Cryopreservation of coffee zygotic embryos: dehydration and osmotic rehydration Ciência e Agrotecnologia
Pinto,Maísa de Siqueira; Paiva,Renato; Silva,Diogo Pedrosa Corrêa da; Santos,Paulo Augusto Almeida; Freitas,Rodrigo Therezan de; Silva,Luciano Coutinho.
ABSTRACT Conservation of plant genetic resources is important to prevent genetic erosion. Seed banks are the most common method of ex situ conservation; however, coffee seeds can not be stored by conventional methods. Cryopreservation is a viable alternative for long-term conservation of species that produce intermediate or recalcitrant seeds, as coffee. The aim of this work was to cryopreserve Coffea arabica L. cv Catuaí Vermelho IAC 144 zygotic embryos, and analyse the effects of dehydration prior cryopreservation and osmotic rehydration after thawing, in embryos germination and seedlings formation after cryopreservation. Prior to cryopreservation, different dehydration times (0, 15, 30, 60 and 120 min) were tested. Dehydrated embryos were cryopreserved...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica L; Ex situ conservation; Embryos dehydration; Long-term storage; Gene bank.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400380
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Cryopreservation of zygotic embryos of the Brazilian Green Dwarf coconut PAB
Lédo,Ana da Silva; Jenderek,Maria; Skogerboe,Dianne; Staats,Elise; Machado,Caroline de Araújo; Oliveira,Leila Albuquerque Resende de.
Abstract: The objective of this work was to evaluate rewarming procedures and recovery media for Brazilian Green Dwarf coconut (Cocos nucifera) embryos cryopreserved by vitrification. The rewarming procedures evaluated were: T1, water bath at 38±2°C; and T2, unloading solution consisting of Y3 medium + 1.2 mol L-1 sucrose. The recovery media assessed were: M1, Y3 medium + 45 g L-1 sucrose + 1 mg L-1 gibberellic acid + 1 g L-1 activated charcoal + 2.2 g L-1 Gelrite; and M2, Y3 medium + 60 g L-1 sucrose + 2.2 g L-1 Gelrite. Rewarming procedures showed no significant effect, and the M1 media induced 72.5% regeneration.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cocos nucifera; Ex situ conservation; PVS3.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000400514
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Embrapa network for Brazilian plant genetic resources conservation. Repositório Alice
ALVES, A. A. C.; AZEVEDO, V. C. R..
bitstream/item/191113/1/bio.2018.0044.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Seed collection; Active genebank; Genebank database; Germplasm exchange; Ex situ conservation.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1104619
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Estimates of genetic parameters and variability in provenances and progeny of Handroanthus vellosoi PFB - Pesquisa Florestal Brasileira
Batista, Camila Moreira; Freitas, Miguel Luiz Menezes; Moraes, Marcela Aparecida de; Zanatto, Antonio Carlos Scatena; Santos, Pedro César dos; Zanata, Marcelo; Moraes, Mario Luiz Teixeira de; Sebbenn, Alexandre Magno.
The present study aimed at estimating genetic parameters and variability among and within provenances for silvicultural traits of Handroanthus vellosoi (Toledo) Mattos, in provenances and progenies test stands, located at the Luiz Antônio Experimental Station (São Paulo State, Brazil). The test was established in the compact family block design, with two provenances (allocated in the plots), six replicates and sub-linear plots of five plants, totalizing 35 progenies. Diameter at breast height (DBH), plant height, cylindrical volume, stem form and survival at 24 years of age were evaluated. Significant differences among the provenances were observed only to the trait stem form. The analysis of deviance showed significant differences among progenies for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ex situ conservation; Tropical tree species; Population genetics; Quantitative genetics Recursos genéticos florestais; Conservação genética; Genética de populações; Genética quantitativa; Melhoramento genético florestal Conservação ex situ; Espécies arbóreas tropicais; Genética de populações; Genética quantitativa.
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/358
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Genetic variability for synthesis of bioactive compounds in peppers (Capsicum annuum) from Brazil. Repositório Alice
PADILHA, H. K. M.; PEREIRA, E. dos. S.; MUNHOZ, P. C.; VIZZOTTO, M.; VALGAS, R. A.; BARBIERI, R. L..
2015
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Solanaceae; Genetic resources; Ex situ conservation; Characterization.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1027973
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Genetic variability for synthesis of bioactive compounds in peppers (Capsicum annuum) from Brazil Ciênc. Tecnol. Aliment.
PADILHA,Henrique Kuhn Massot; PEREIRA,Elisa dos Santos; MUNHOZ,Priscila Cardoso; VIZZOTTO,Márcia; VALGAS,Ricardo Alexandre; BARBIERI,Rosa Lía.
AbstractThe objective of this study was to evaluate the genetic variability for synthesis of bioactive compounds in pepper (Capsicum annuum, Solanaceae). Total phenolics, anthocyanins, carotenoids and antioxidant activity were evaluated in 14 accessions of Capsicum annuum from the Capsicum Genebank of Embrapa Temperate Agriculture (Pelotas – RS, Brazil). Thirty plants of each accession were cultivated in the field during spring and summer. The experimental design was a complete randomized block with 14 treatments (accessions) and three replications. The laboratory evaluations followed the same experimental design to field, but with two repetitions more. Seeds were discarded and opposite longitudinal portions of fruits were manually prepared for chemical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanaceae; Genetic resources; Ex situ conservation; Characterization.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000300516
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Genetic variation and effective population size in Dipteryx alata progenies in pederneiras, São Paulo, Brazil. Repositório Alice
SANTOS, W. dos; AGUIAR, A. V. de; SOUZA, D. C. L.; DINI, D. G. T.; SOUZA, F. B. de; DALASTRA, C.; MACHADO, J. A. R.; SOUSA, V. A. de; MORAES, M. L. T. de; FREITAS, M. L. M.; SEBBENN, A. M..
Foram avaliados os parâmetros genéticos e fenotípicos da bifurcação (BIF), forma do fuste (RET) e diâmetro à altura do peito (DAP) para as procedências e progênies de Dipteryx alata. O experimento foi instalado em delineamento em blocos ao acaso, com 43 tratamentos (26 e 17 progênies dos municípios de Três Lagoas e Brasília no Estado de Mato Grosso do Sul e Distrito Federal, respectivamente) e cinco plantas por parcela. O espaçamento entre plantas foi de 3 x 3 metros. A análise dos dados foi realizada pelo método REML / BLUP (máxima verossimilhança restrita melhor predição linear não viesada). Foram detectadas diferenças significativas entre progênies apenas para DAP. Os valores genéticos individuais variaram de 3,7 a 21,7% para BIF e DAP; A variação...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Conservação ex situ; Genética quantitativa; Árvore tropical; Tropical trees; Dipteryx Alata; Ex situ conservation; Quantitative genetics.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103299
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In vitro conservation of blackberry genotypes under minimal growth conditions and subsequent large-scale micropropagation PAB
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
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In vitro conservation of Cape gooseberry through slow-growth nodal segment cultures PAB
Rezende,Renata Alves Lara Silva; Rodrigues,Filipe Almendagna; Rezende,Ramiro Machado; Soares,Joyce Dória Rodrigues; Pasqual,Moacir; Assis,Franscinely Aparecida de.
Abstract: The objective of this work was to evaluate the effects of temperature and osmotic agents on the in vitro conservation of Cape gooseberry (Physalis peruviana). Temperatures at 18 and 25°C, as well as the osmotic agents sucrose, mannitol, and sorbitol were tested. A short-term in vitro conservation of Cape gooseberry can be achieved at 18°C, using 30 g L-1 sucrose.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physalis peruviana; Ex situ conservation; Tissue culture..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500651
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In vitro conservation of Piper aduncum and Piper hispidinervum under slow-growth conditions PAB
Silva,Tatiane Loureiro da; Scherwinski-Pereira,Jonny Everson.
The objective of this work was to evaluate in vitro storage of Piper aduncum and P. hispidinervum under slow-growth conditions. Shoots were stored at low temperatures (10, 20 and 25°C), and the culture medium was supplemented with osmotic agents (sucrose and mannitol - at 1, 2 and 3%) and abiscisic acid - ABA (0, 0.5, 1.0, 2.0 and 3.0 mg L-1). After six-months of storage, shoots were evaluated for survival and regrowth. Low temperature at 20ºC was effective for the in vitro conservation of P. aduncum and P. hispidinervum shoots. In vitro cultures maintained at 20ºC on MS medium showed 100% survival with slow-growth shoots. The presence of mannitol or ABA, in the culture medium, negatively affected shoot growth, which is evidenced by the low rate of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ex situ conservation; Germplasm bank; Micropropagation.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400007
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Is the genetic integrity of natural plant populations ex situ preserved with the current sampling, conservation and regeneration approaches? JBAG
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
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Mating system and fine-scale spatial genetic structure of Solanum lycocarpum St. Hil. (Solanaceae) in the Brazilian cerrado. Repositório Alice
MARTINS, K.; CHAVES, L. J.; BUSO, G. S. C.; KAGEYAMA, P. Y..
bitstream/item/178097/1/ID-27838-1.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coancestry; CpSSR; Mating system; Cerrado; Solanum lycocarpum; Ex situ conservation.
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/187974
Registros recuperados: 30
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