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Registros recuperados: 33
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Micropropagated banana plants induced by gamma irradiation and resistant to the root-knot nematode reproduction CIGR Journal
Taha, Rania Abdel-Ghaffar; El-Nagdi, Wafaa M. A.; Kamel, Hedaya Ahmed.
Micropropagation of banana plants has been used successfully in commerce. Banana plantation has a great interest in Egypt due to suitable climate. However, some problems might thwart the plantation progress like the root-knot nematode; Meloidogyne incognita infection which can affect acclimatization and plantation of in vitro plants. Thus, our investigation aimed to produce nematode resistant in vitro plants using gamma radiation (γ). Banana in vitro plantlets were exposed to gamma radiation at several doses then replanted in vitro. Sensitivity of banana plants to irradiation was determined. Acclimatized plants were infected with M. incognita in greenhouse to see their capability for tolerance. Results indicated that irradiated plants could manage the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Musa sp.; Micropropagation; Gamma radiation; Meloidogyne incognita; Free amino acids..
Ano: 2020 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5500
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Mutagenesis in Lupinus polyphyllus a tool for producing spring variants? JBAG
Fatta,N.; Mascarini,A; Lopez,S..
Lupinus polyphyllus remains vegetative during the first year, stores cold during winter and is induced to blossoming in the second year. Inflorescences are attractive and varied coloured terminal clusters. In Buenos Aires the historical average winter temperature is 11.5 ºC and the number of hours of cold are not enough for L. polyphyllus to flower so there is no commercial offer in pots. The line of work chosen to produce genetic variability in L. polyphyllus, was induced mutagenesis with the purpose of rescuing genetic variants that meet the required cold naturally in Buenos Aires and capable of flowering and producing viable seeds. Seeds harvested in Bariloche were sown on september 4, 2003. 600 seedlings received gamma radiation at a rate of 50 Gy and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vernalization; Qualitative character; Gamma radiation; Plant variety.
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332008000200002
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Mutation induction as a strategy to overcome the restricted genetic base in Physalis Rev. Bras. Frutic.
Trevisani,Nicole; Melo,Rita Carolina de; Bernardy,João Pedro Fossa; Pierre,Patrícia Maria Oliveira; Coimbra,Jefferson Luís Meirelles; Guidolin,Altamir Frederico.
Abstract The restricted genetic base in physalis in Southern Brazil is a challenge that requires genetic breeding for the achievement of fruits with superior agronomic quality. Therefore, genetic changes were induced in physalis for the selection of populations with superior fruit quality. To that end, seven populations of physalis were submitted to gamma irradiation (0,100 and 200 Grays – Gy), which provided 21 populations. Significant population difference was observed, which indicates the existence of variability between at least two populations of physalis. The contrasts showed difference for Colômbia01, Colômbia02, Caçador and CAV. The mutation induction was effective at causing genetic variations in these populations. For Colombia01 (100 Gy), it was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Small fruit; Gamma radiation; Cobalt60; Selection.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452018000300801
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New insights into the structural characteristics of irradiated crotamine J. Venom. Anim. Toxins incl. Trop. Dis.
Oliveira,Karina Corleto; Spencer,Patrick Jack; Ferreira Jr,Rui Seabra; Nascimento,Nanci.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gamma radiation; Structural modifications; Crotamine; Snake venom; Crotalus durissus terrificus.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100321
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New wheat genotypes tolerant to aluminum toxicity obtained by mutation induction PAB
Tulmann Neto,Augusto; Alves,Marcelo Correa; Camargo,Carlos Eduardo de Oliveira; Castro,Jairo Lopes de; Ferreira Filho,Wilson Penteado.
Seed from the sensitive wheat (Triticum aestivumL.) cultivar Anahuac was treated to gamma-ray irradiation and eleven Al3+ tolerant mutants selected. The objective was to compare these mutants to the original Anahuac and to the tolerant wheat cultivars IAC-24 and IAC-60 from 1994 to 1996 in acid (Capão Bonito) and limed (Monte Alegre do Sul) soil field trials, in the State of São Paulo, Brazil. Grain yield and agronomic characteristics were analyzed. All the mutant lines yielded higher than the sensitive Anahuac cultivar in the acid soils of Capão Bonito. Under limed soil conditions, 10 mutants had a similar yield to the original sensitive cultivar and one a lower yield. The majority of the mutants were similar in yield to the tolerant cultivars IAC-24 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acid soil; Liming; Breeding methods; Mutants; Gamma radiation; Agronomic characters; Grain yield; Plant breeding.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000100008
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POSTHARVEST OF IRRADIATED TAHITI LIME FRUITS Rev. Bras. Frutic.
SILVA,SIMONE RODRIGUES DA; BEZERRA,DÉBORA NANCY FERNANDES; BASSAN,MEIRE MENEZES; CANTUARIAS-AVILÉS,TATIANA; ARTHUR,VALTER.
ABSTRACT This study aimed to evaluate the postharvest quality evolution of gamma-irradiated ‘Tahiti’ limes. Shiny, olivegreen fruits with coarse skin (56 cm equatorial diameter) harvested in commercial orchars and processed in commercial packing house line were used. In a preliminary assay, fruits harvested in April 2011 were exposed to a gamma radiation range from 0 to 750 Gy. The 250 and 750 Gy doses negatively affected skin quality and pulp of exposed fruits. For this reason, new assays were carried out using lower doses to irradiate fruits harvested in July 2011 (off-season) and January 2012 (regular harvest period). Fruit harvested in both periods were selected and exposed to radiation doses of 0, 50, 100, 150, and 200 Gy. All irradiations occurred...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Citrus latifolia; Conservation; Gamma radiation; Fruit quality.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400302
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Raios gama na sobrevivência de plantas de maracujazeiro amarelo inoculadas com Fusarium oxysporum f sp. Passiflorae. Repositório Alice
FLORES, P. S.; BRUCKNER, C. H..
A murcha de Fusarium ou fusariose ocorre em diversas regiões produtoras de maracujá amarelo e tem ocasionado grandes danos devido à morte das plantas. A mutagênese associada à seleção in vitro utilizando fitotoxinas possibilita a aplicação de uma pressão de seleção sobre um grande número de propágulos e, assim, pode direcionar a seleção dos mutantes específicos. Neste trabalho, foi analisado o efeito de raios gama sobre a sobrevivência de plantas de maracujazeiro amarelo inoculados com F. oxysporum f. sp. passflorae. Brotações foliares provenientes de segmentos caulinares de P. edulis irradiados a 20Gy foram submetidas a dois ciclos de seleção em meio de cultura suplementado com o filltrado da cultura fúngica (40% e 50% de filtrado). As plantas...
Tipo: Artigo de periódico Palavras-chave: Maracujá amarelo; Yellow passion fruit; Maracuyá amarillo; Fusarium oxysporum f sp Passiflorae; Enfermedades y desórdenes de las plantas; Granadillas; Inoculación germinal; Micropropagación; Passiflora edulis f flavicarpa; Radiación gamma.; Doença de planta; Maracujá Peroba; Passiflora edulis flavicarpa; Fungo; Fusariose; Micropropagação; Inoculação artificial; Radiação atômica; Raio gama; Variedade resistente; Mutação induzida; Fusarium Oxysporum; Murcha de Fusarium.; Plant diseases and disorders; Fungi; Micropropagation; Seed inoculation; Gamma radiation; Mutagénesis..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001660
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Resposta de sementes de amendoim a diferentes doses de radiação gama (60CO). Repositório Alice
SANTOS, T. da S.; ALMEIDA, F. de A. C.; SUASSUNA, T. de M. F.; COUTINHO, W. M.; ALMEIDA, P. B. A..
Resumo: A radiação gama, proveniente da fonte de 60Co, é bastante utilizada para esterilização, visando a prevenção da decomposição e a toxidez de origem microbiana em diversos produtos. O grau de radiossensibilidade de um embrião vegetal depende da espécie, do estágio de seu desenvolvimento durante a radiação, da dose empregada e do critério usado para medir o efeito biológico, sendo comumente utilizado o teste de germinação. Objetivou-se, com este trabalho, estudar a sensibilidade do amendoim a radiação gama e seus efeitos na germinação, no vigor e na micoflora das sementes da cultivar BRS Havana, irradiadas com uma fonte de 60Co, tipo gammacell, com taxa de dosagem de 12,5 kGy h-1. As doses testadas em kGy foram as seguintes: 0; 0,5; 1,0; 1,5; 2,0; 2,5;...
Tipo: Artigo de periódico Palavras-chave: Vigor da planta; Radiação gama; Análise sanitária; Amendoim; Semente; Radiação; Germinação; Inspeção Sanitária; Germination; Seed germination; Peanuts; Gamma radiation.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/862864
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Selection of putative Terra Maranhão plantain cultivar mutants obtained by gamma radiation. Repositório Alice
AMORIM, E. P.; FERREIRA, C. F.; R. V. REIS; LEDO, C. A. da S.; Z. S. GONÇALVES; BORÉN, A..
The aim of this study was to select putative Terra Maranhão plantain cultivar mutants obtained by gamma radiation with good agronomic traits and short height. A total of 315 buds were irradiated in vitro with gamma rays in doses of 20 Gy, which were subcultivated and then evaluated in the field over two production cycles.
Tipo: Parte de livro Palavras-chave: Banana da terra; Variedade; Radiação; Gamma radiation.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1000472
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Survival and mutant production induced by mutagenic agents in Metarhizium anisopliae Scientia Agricola
Kava - Cordeiro,V.; Luna - Alves - Lima,E.A.; Azevedo,J.L..
A wild strain of Metarhizium anisopliae, an entomopathogenic fungus, was submitted to three mutagenic agents: gamma radiation, ultraviolet light and nitrous acid. Survival curves were obtained and mutants were selected using different mutagenic doses which gave 1 to 5% survival. Morphological and auxotrophic mutants were isolated. Morphological mutants were grouped in a class with yellow conidia and other with pale vinaceous conidia as opposed to the green wild type conidia. Auxotrophic mutants had requirements for vitamin and aminoacid biosynthesis. More than 58% of the total auxotrophk mutants required proline/aipnine. Gamma radiation showed to be the most efficient mutagenic agent giving 0.2% of auxotrophk mutants followed by ultraviolet light (0.12%)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Metarhizium anisopliae; Auxotrophk mutants; Colour mutants; Mutagenic agents; Gamma radiation; Ultraviolet light; Nitrous acid.
Ano: 1995 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161995000300023
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THE RADIO SENSITIZING EFFECT OF METRONIDAZOLE IN MAIZE Bragantia
VICCINI,LYDERSON FACIO; SARAIVA,LUIZ SÉRGIO; ALMEIDA FILHO,JOSÉ DE; CRUZ,COSME DAMIÃO; ANDRADE,ROGÉRIO ALVAREZ DE.
The identification of chemical substances which increase the efficiency of radiation is important to make easier the obtention of plants with structural chromosome aberrations which may be used in an alternative program for hybrid maize production. The present work was carried out to investigate the effect of the chemical substance metronidazole in maize seedlings submitted to gamma radiation. Several treatments were done, soaking the seeds in solutions with varied concentrations of the active substance combined with solution filtration and gamma radiation. On the third day of the experiment, germination percentage, root and stem lengths were evaluated. At a high concentration (1,250 mg/50 mL) metronidazole behaved as a radiosensibilizer in the presence of...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Corn; Zea mays; Gamma radiation; Metronidazole.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051997000200004
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UFV-M7: mutant yellow passionfruit genotype with photoperiod insensitivity for flowering. Repositório Alice
LIRA JÚNIOR, J. S. de; FLORES, P. S.; BRUCKNER, C. H..
The development and characteristics of UFV-M7, a mutant with photoperiod insensitivity to beginning of flowering, are described. This genotype was fortuitously obtained by regeneration of nodal segments, exposed to gamma radiation. The possibil-ity of incorporating photoperiod insensitivity into cultivars for producing regions is discussed for latitudes where the photoperiod determines the seasonality of harvest.
Tipo: Artigo de periódico Palavras-chave: Maracujá amarelo; Yelllow passion fruit; Maracuyá amarillo; UFV-M7; Fitomejoramiento; Radiación gamma.; Passiflora edulis f flavicarpa; Granadillas; Fotosensibilidad; Floracion; Melhoramento genético vegetal; Maracujá Peroba; Passiflora edulis flavicarpa; Genótipo; Mutação induzida; Radiação atômica; Raio gama; Fotossensibilidade; Floração.; Plant breeding; Genotype; Gamma radiation; Photosensitivity; Flowering; Mutagénesis..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1001667
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Uso de radiação gama para obtenção de mutantes de pimenta-do-reino. Infoteca-e
ALBUQUERQUE, F. C. de; HIRAKATA, K.; ANDO, A.; MENTEN, J. O. M..
bitstream/item/57829/1/CPATU-PA44.pdf
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Pimenta-do-reino; Tratamento da semente; Tratamento da gema; Radiação gama; Selection.; Melhoramento; Piper Nigrum; Seleção.; Gamma radiation; Plant breeding; Seed treatment..
Ano: 1981 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378090
Registros recuperados: 33
Primeira ... 12 ... Última
 

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