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	Provedor de dados Scientia Agricola (4) Horticultura Brasileira (2) Autor Nascimento,Warley Marcos (3) Aragão,Fernando Antônio Souza de (1) Bennett,M. A. (1) Cantliffe,Daniel J (1) Grassbaugh,E. M. (1) Huber,Donald J (1) Marcos-Filho,Julio (1) Nascimento,Warley M (1) Rodo,Angélica B. (1) Mais... Palavra-chave Stand establishment (6) Osmoconditioning (3) Cultivars (2) Germination (2) Allium cepa (1) Biological control (1) Cucumis melo (1) Daucus carota (1) Dormancy (1) Environmental stress (1) Plant performance (1) Priming (1) Seed physiological quality (1) Seed priming (1) Thermotolerance (1) Mais... Tipo do documento Info:eu-repo/semantics/article (6) Ano 2013 (1) 2004 (1) 2003 (3) 1998 (1) País Brazil (6) Idioma Inglês (6)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Carrot seed germination and ethylene production at high temperature in response to seed osmopriming Horticultura Brasileira Nascimento,Warley M; Huber,Donald J; Cantliffe,Daniel J. Carrot (Daucus carota) seed germination can be erratic or reduced under temperatures above 35ºC. Priming circumvents seed thermoinhibition in several crops, including carrot. The involvement of ethylene in germination at supra-optimal temperatures has been reported in other species, but its role in carrot seed germination has not been examined. The objective of this study was to determine whether priming-mediated improvement in carrot seed germination at high temperature was associated with increased ethylene production. Seeds of two tropical carrot genotypes (Alvorada and Brasília) were incubated over a range of temperatures. 'Brasilia' seeds were primed for 72 hours in aerated PEG solution at 15ºC under light conditions and germination tested at 20 and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Daucus carota; Thermotolerance; Stand establishment; Osmoconditioning; Cultivars. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000400008 Onion seed vigor in relation to plant growth and yield Horticultura Brasileira Rodo,Angélica B.; Marcos-Filho,Julio. Research has emphasized the relationship of laboratory germination and vigor to seedling emergence and stand establishment, but information relating seed vigor to plant performance is less available. The reliable procedures to evaluate onion (Allium cepa L.) seed vigor and decided the differences between seed physiological potential influence plant performance in field conditions were identified in two experimental years. Six seed lots of Petroline cultivar were evaluated for germination and vigor, in laboratory, and field seedling emergence. Field experiments were performed by direct sowing and transplant systems and all treatments had equal stand for both cropping systems. Results demonstrated that saturated salt accelerated aging (41:C/72h) and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium cepa; Seed physiological quality; Stand establishment; Plant performance. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000200020 Factors affecting vegetable stand establishment Scientia Agricola Grassbaugh,E. M.; Bennett,M. A.. Several factors can influence stand establishment in vegetable crop production. Environmental conditions such as soil physical characteristics, temperature and moisture, various cultural practices, and diseases may all be limiting factors in establishing maximum stands and achieving the highest possible yields. Measures taken to increase stands include soil improvements, implementing cultural practices, and use of chemical and biological seed treatments. Combining seed treatments and cultural/tillage practices to minimize environmental constraints can lead to maximum stands and yields in the production of high quality vegetable crops. Tipo: Info:eu-repo/semantics/article Palavras-chave: Stand establishment; Priming; Biological control; Environmental stress. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500021 Preventing thermoinhibition in a thermosensitive lettuce genotype by seed imbibition at low temperature Scientia Agricola Nascimento,Warley Marcos. Lettuce (Lactuca sativa L.) seed germination is strongly temperature dependent and under high temperatures, germination of most of genotypes can be erratic or completely inhibited. Lettuce seeds of 'Dark Green Boston' (DGB) were incubated at temperatures ranging from 15° to 35°C at light and dark conditions. Other seeds were imbibed in dark at 20°; 25°; 30°; and 35°C for 8 and 16 hours and then transferred to 20 or 35°C, in dark. Seeds were also incubated at constant temperature of 20° and 35 °C, in the dark, as control. In another treatment, seeds were primed for 3 days at 15°C with constant light. DGB lettuce seeds required light to germinate adequately at temperatures above 25°C. Seeds incubated at 20°C had 97% germination, whereas seeds incubated at... Tipo: Info:eu-repo/semantics/article Palavras-chave: Germination; Dormancy; Seed priming; Stand establishment. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300010 Muskmelon seed germination and seedling development in response to seed priming Scientia Agricola Nascimento,Warley Marcos. Important factors affecting seed priming have not been extensively reported in muskmelon (Cucumis melo L.) studies. The optimization of the seed priming technique becomes very important at the commercial scale. Little information has been reported on seedling development of muskmelon subsequent to seed priming. Seeds of muskmelon were primed in darkness at 25°C in different solutions and three osmotic potentials. Seeds were also primed with and without aeration during different periods. In relation to osmotic solutions, an osmotic potential around -1.30 MPa is most adequate for muskmelon priming. Salt solutions gave better germination rate but were deleterious for seed germination, especially at higher osmotic potentials. Aeration of the soaking salt... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis melo; Osmoconditioning; Stand establishment. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100011 Muskmelon seed priming in relation to seed vigor Scientia Agricola Nascimento,Warley Marcos; Aragão,Fernando Antônio Souza de. A number of important factors may affect seed priming response, including seed quality. Effects of seed vigor on seed priming response were investigated using seed lots of two muskmelon (Cucumis melo L.) cultivars. Seeds of muskmelon, cvs. Mission and Top Net SR were artificially aged at 43°C for 0, 20 and 40 hours. Seeds were primed for six days in darkness at 25°C in KNO3 (0.35 mol L-1) aerated solution. Aged seeds germinated poorly at 17°C. Priming increased germination rate at 17 and 25°C and germination percentage at 17°C. An interaction effect on germination performance between vigor and priming was observed, especially at low temperature. Priming increased germination performance in seeds of low vigor, and the response was cultivar dependent. Tipo: Info:eu-repo/semantics/article Palavras-chave: Germination; Osmoconditioning; Cultivars; Stand establishment. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100019 Registros recuperados: 6 Primeira ... 1 ... Última

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