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Registros recuperados: 9
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Characterization of cold-induced changes in the fatty acids profile of rice seedlings. Repositório Alice
SASSAKI, G.; SCHMIDT, A. B.; FERREIRA, M. E.; RANGEL, P. H. N.; PEREIRA-NETTO, A. B..
Rice, a staple food for more than one half of the world?s population, is one of the most cold-sensitive cereals. Breeding programs aimed at increasing rice production are expected to reduce cold-imposed grain losses. Several reports have demonstrated that cold induce differential effects on the fatty acids profile of membranes in chilling-sensitive and chilling-tolerant plants. In this work, we evaluated changes in fatty acid (FA) composition as a potential screening tool to evaluate chilling sensitivity of rice accessions. Cold exposure led to the preferential accumulation of the polyunsaturated linolenic and linoleic FAs and reduction of palmitic and stearic FAs, besides showing increased lignoceric acid content in roots of the variety. Similarly, roots...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Arroz; Oryza sativa; Temperatura; Frio; Ácido graxo; Rice; Cold; Polyunsaturated fatty acids.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/965025
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Economic Analysis of Improving Cold Tolerance in Rice in Australia AgEcon
Singh, Rajinder Pal; Brennan, John P.; Farrell, Tim; Williams, Robert L.; Rienke, Russell; Lewin, Laurie; Mullen, John D..
The occurrence of low night temperatures during reproductive development is one of the factors most limiting rice yields in southern Australia. Yield losses due to cold temperature are the result of incomplete pollen formation and subsequent floret sterility. Researchers have found that in 75% of years, rice farmers suffer losses between 0.5 and 2.5 t/ha. Research is being undertaken to identify overseas rice varieties, that are cold tolerant under the local weather conditions and by using those genotypes as parent material, develop cold tolerance varieties of rice. A yield simulation model was used to measure reduction in losses due to cold at different minimum threshold temperatures, while the SAMBOY Rice model was used to measure the costs and returns...
Tipo: Conference Paper or Presentation Palavras-chave: Rice; Cold; Yield loss; Breeding; Crop Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/57925
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Evolução de brotação em cultivares de macieiras com variações de exigência de frio tratadas com cianamida hidrogenada ao longo do período de endodormência. Repositório Alice
PERUZZO, S.; SANTOS, H. P. dos; FIALHO, F. B.; SOUZA, D. A..
O estudo pretendeu responder as seguintes questões: 1) De modo empírico, sabe-se que as plantas precisam de um certo acúmulo de horas de frio (HF) para que o tratamento com cianamida hidrogenada (CH) seja eficaz, porém qual o somatório de frio mínimo para que esse produto tenha efeito pleno? 2) Existe diferença nesta quantidade de HF acumulada para que a CH tenha efeito quando utiliza-se genótipos contrastes de exigência de frio?
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Horas de frio; Endodormência; Cianamida hidrogenada; Macieira; Fruticultura; Maçã; Dormência; Frio; Clima; Apples; Fruit growing; Dormancy; Cold.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001134
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Gene Expression Analysis: A Way to Study Tolerance to Abiotic Stresses in Crops Species Chilean J. Agric. Res.
Pérez-Torres,Eduardo; Paredes C,Mario; Polanco,Víctor; Becerra B,Viviana.
Regions traditionally destined to agriculture report an ever increasing exposure to cold and drought conditions. This is especially important in countries like Chile where crop management options are limited. The development of new cultivars with better yields under adverse conditions is fundamental if the ever increasing demand for food is to be matched; however, improving tolerance to abiotic stresses has proved to be a complex task. In this regard, development in plant physiology and genomics in the last 20 years has led to a deeper understanding of how plants respond to stress and mechanisms responsible for different ranges of tolerance observed in nature. This review discusses the techniques currently most in use in gene expression analysis, together...
Tipo: Journal article Palavras-chave: Cold; Drought; Crops species; Gene expression.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200016
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Impacts of Flu/Cold Incidences and Retail Orange Juice Promotion on Orange Juice Demand AgEcon
Lee, Jonq-Ying; Brown, Mark G..
In this study, we examine the impacts of retail promotions and flu/cold incidences on the demand for orange juice using weekly Nielsen grocery orange juice sales statistics and the flu/cold incidences reported by Surveillance Data Inc. The cross-section time-series pooling technique proposed by Parks was used to estimate the demand parameters. Results show that flu/cold incidences increased the effectiveness of retail promotions on the demand for orange juice.
Tipo: Journal Article Palavras-chave: Retail promotion; Flu; Cold; Orange juice; Demand; Marketing.
Ano: 2009 URL: http://purl.umn.edu/59242
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Intraerythrocytic organic phosphates and hemoglobins of skua - Catharacta maccormicki (Stercoraridae): at two different stages of the year in relation to Antartic migration BABT
Landini,Gustavo Fraga; Di Vito Neto,Alfredo; Schwantes,Arno Rudi; Schwantes,Maria Luiza Barcellos; Santos,Marcelo dos.
Catharacta maccormicki blood samples were collected in the winter (October) and in the summer (February) in order to study the intraerythrocytic organic phosphates, hemoglobin (Hb) electrophoretic patterns, oxygen blood equilibrium and stripped Hbs, as well as the effect of 2,3-biphosphoglycerate (BPG) and inositol hexaphosphate (IHP) on oxygen affinity. All the samples (five from the winter and five from the summer) showed the same electrophoretic pattern: one minor fast component and one major slow one. No differences in oxygen affinity and Bohr effect in the samples collected in the winter and in the summer were found. Oxygen affinity was higher in the stripped Hb than in the blood. BPG seemed to have no effect on the functional properties of skua Hb...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birds; Blood; Electrophoresis; Cold; Affinity; Oxygen.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400010
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Spikelet sterility in rice genotypes affected by temperature at microsporogenesis AGRIAMBI
Souza,Natalia M. de; Marschalek,Rubens; Sangoi,Luis; Weber,Francieli S..
ABSTRACT This study evaluated the effect of temperatures during the phase of microsporogenesis on spikelet sterility of paddy rice and identified genotypes tolerant to low temperatures at this growth stage. The inbreds SC681, SC491, and SC676 and the cultivars Epagri 109 and SCS116 Satoru were assessed. The genotypes were submitted for three days in a growth chamber to five temperatures at microsporogenesis: 9, 12, 15, 18, and 21 oC. For each tested temperature, a control was kept in the greenhouse under environmental conditions. After harvest, full and empty spikelets were counted and weighed and the percentage of spikelet sterility was determined. Data were evaluated by variance analysis using the F test. Averages were compared by Tukey’s test and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa; Booting; Cold; Controlled environment.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001200817
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Thermographic Images to Measure Health Risks of Workers Exposed to Artificially Refrigerated Environments Rev. Bras. Ciênc. Avic.
Takeda,F; Moro,A; Martins,N.
ABSTRACT Thermography generates high-resolution imagery in real time and is a non-invasive and painless technique devoid of physical contact or exposure to any type of radiation. This technique has been successfully applied to different areas, such as health- and safety-related applications, to control cold risk in workers exposed to low-temperature environments. Thus, this study aims to analyze skin temperature variations in three body parts of the upper limbs (fingers, the center of the hands and wrists on both the left and right sides of the body) caused by exposure to low temperatures in air-conditioned and artificially controlled work environments. The objective is to assess thermography’s adequacy in controlling workers’ health risks. This study used...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Slaughterhouse; Worker Health; Cold; Skin Temperature; Work Safety Engineering.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200245
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Use of Setaria viridis (A10.1) as model plant for validation of genes for cold tolerance. Repositório Alice
SANTOS, M. de L.; SILVA, V. N. B. e.; VIEIRA, L. R.; SOUSA, C. A. F. de; SOUZA JUNIOR, M. T..
bitstream/item/173710/1/Hugo-et-al-I10.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cold; Tolerance; Setaria; Stress; Abiotic.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088851
Registros recuperados: 9
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