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| Registros recuperados: 241 | |
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| Petton, Bruno; Le Grand, Jacqueline; Riobe, Marion; Mingant, Christian; Ratiskol, Dominique; Petton, Sebastien; Alunno-bruscia, Marianne. |
| Depuis 2008, des mortalités massives d’huîtres creuses âgées de moins d’un an sont relevées sur le littoral français dès que la température de l’eau de mer atteint le seuil de 16°C. Ces mortalités de naissains sont associées à la détection du virus OsHV-1 μVar. Depuis 2010, des travaux de qualification zoo-sanitaire ont montré qu’environ un lot de naissains de captage sur deux était infecté par le virus avant l’apparition des mortalités dans le milieu naturel. En 2014, dans le cadre de la première action QUALIF, les résultats de la qualification zoo-sanitaire des naissains du captage de l’année 2013 à l’échelle nationale ont mis en évidence le caractère infectieux des maladies développées par ces naissains porteurs latents d’OsHV-1 μVar. L’objectif 2015 du... |
| Tipo: Text |
Palavras-chave: Huitre creuse; Naissain; Maladie; OsHV-1 μVar; Epreuve thermique.; Pacific oyster; Seed; Disease; OsHV-1 μVar; Thermal challenge.. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00335/44587/44305.pdf |
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| Papone,Mirta; Mascarini,Alba; Fatta,Nora. |
| D.purpurea is grown in cold areas with long days. In the Buenos Aires province market it is absent, probably because it is a complicated and expensive crop. The horticultural growers prefer the imported costly hybrid seed because plants flower without suplementary light or cold. The objectives of the experiments which were laid out were to find, among the individuals of a population grown wild, genotypes that responded to the Buenos Aires conditions, producing plants induced in pots and assesing if there was response to natural aggregates. Seed harvested in Bariloche was sown on the 29/05/o4. The plants were transplanted to 3 liter pots. 30 pots were placed in greenhouse and treated with chemical fertilization. 54 pots were placed outdoors in the sun and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photoperiod; Vernalization; Natural fertilizer; Seed. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332008000100004 |
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| Abdala,Ludmila; Moraes,Mario Luiz Teixeira de; Rechia,Carem Gledes Vargas; Giorgini,Jarbas Francisco; Sá,Marco Eustáquio de; Polizeli,Maria de Lourdes Teixeira de Moraes. |
| The objectives of this work were to analyze seeds from 20 trees of aroeira (Myracrodruon urundeuva Fr. All.) of a natural population located in the region of Selvíria, State of Mato Grosso do Sul, Brazil, in order to evaluate their protein, lipid and carbohydrate contents, and to estimate their genetic variation. A completely randomized experimental design consisting of 20 treatments (families) was set up, with two replications. Four types of proteins were detected: albumin (35.0 to 107.3 mg/g seed), globulin (3.4 to 9.3 mg/g), prolamin (60.0 to 135.2 mg/g) and glutelin (118.0 to 286.0 mg/g). The lipid content varied between 200 and 334 mg/g seed. The total sugars also varied (26.5 to 46.3 mg/g seed), with a predominance of polyols (arabinitol, mannitol,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Myracrodruon urundeuva; Seed; Proteins; Lipids; Carbohydrates; Evaluation. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000700003 |
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| Carrão-Panizzi,Mercedes Concórdia; Kwanyuen,Prachuab; Erhan,Sevim Zeynep; Lopes,Ivani de Oliveira Negrão. |
| The objective of this work was to determine genetic and environmental effects on beta-conglycinin and glycinin content in Brazilian soybean cultivars. The concentrations of these protein fractions were analyzed by scanning densitometry after electrophoresis, in 90 Brazilian soybean cultivars sown in Ponta Grossa, PR, in 2001. The effects of the sowing location were determined in the cultivar MG/BR 46 (Conquista), sown in 16 locations of Goiás and Minas Gerais states (Central Brazil), and in the cultivar IAS 5, sown in 12 locations of Paraná and São Paulo states (Southern Brazil), in 2002 soybean season. A significant variability for beta-conglycinin (7S) and glycinin (11S) protein fractions ratio was observed among the 90 Brazilian soybean cultivars.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eletrophoresis; Nutraceutic properties; Protein fractions; Seed; Sowing location. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000900002 |
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| ÖZKAN,M.; AKTOKLU,E.; ÖZDEMIR,C.. |
| ABSTRACT The seed (nutlet) morphology of four Onobrychis Miller (Fabaceae: subfamily Papilionoideae, Section Hymenobrychis DC.) taxa from Turkey, including three endemic taxa, was examined using scanning electron microscopy. Onobrychis tournefortii, O. galegifolia, O. cappadocica, O. albiflora. The seed examined exhibited variation in size, shape, colour, and surface sculpturing. Seed size ranged between 4.0-5.2 mm length and 2.0-3.6 mm width. Observed shapes included; ellipticus anguste asymmtricus reniformis, Ovatus anguste asymmetricus reniformis and ellipticus reniformis. Seed surface sculpturing revealed two distinct types: reticulate and rugulate. Species of Onobrychisare generally similar and confused with those of Hedysarumduring the identification... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Seed; Morphology; Fabaceae; Onobrychis; Turkey. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000400699 |
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| Dias-Filho,Moacyr B.. |
| The potential for seed bank formation of two perennial weed species, Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae) and Stachytarpheta cayennensis (Rich.) M. Vahl (Verbenaceae), both common in Amazonia , was evaluated in a degraded pasture area in eastern Brazilian Amazonia . Seeds were enclosed in nylon mesh packets and placed at the soil surface or buried at 5 or 10 cm deep. The number of viable seeds was recorded at 6, 10, 14 and 18 months after burial. Results showed that S. cayennensis has the ability to form persistent soil seed bank, while I. asarifolia seeds do not build up in the soil seed bank. For S. cayennensis and, to some extent, for I. asarifolia, seed survival was highest at greater burial depths. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Seed; Longevity; Stachytarpheta cayennensis; Ipomoea asarifolia. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581999000200002 |
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| Smale, Melinda; Byerlee, Derek R.; Jayne, Thomas S.. |
| There have been numerous episodes of widespread adoption of improved seed and long-term achievements in the development of the maize seed industry in Sub-Saharan Africa. This summary takes a circumspect view of technical change in maize production. Adoption of improved seed has continued to rise gradually, now representing an estimated 44 percent of maize area in Eastern and Southern Africa (outside South Africa), and 60 percent of maize area in West and Central Africa. Use of fertilizer and restorative crop management practices remains relatively low and inefficient. An array of extension models has been tested and a combination of approaches will be needed to reach maize producers in heterogeneous agricultural environments. Yield growth overall has been... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Sub-Saharan Africa; Maize; Seed; Agricultural and Food Policy; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/113651 |
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| Harl, Neil E.. |
| Dramatic increases in concentration in the seed business, coupled with aggressive efforts to vertically integrate the agricultural sector and to institute contract-based production of commodities, have raised questions about the economic position of producers. Disparate positions of market power by highly concentrated input suppliers on the one hand (particularly seed suppliers because of control over germ plasm and a monopoly position over seed varieties through plant patents or plant variety protection certificates), and producers in nearly perfect competition on the other, suggest that the revenue division from production is likely to be redefined in favor of the party with the greater market and economic power. Possible solutions include aggressive... |
| Tipo: Journal Article |
Palavras-chave: Agriculture; Antitrust; Barriers to entry; Collective action; Concentration; Contract; Seed; Vertical integration; Farm Management; Industrial Organization. |
| Ano: 2000 |
URL: http://purl.umn.edu/14701 |
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| Registros recuperados: 241 | |
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