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| Registros recuperados: 89 | |
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| Gómez Martínez, Procoro. |
| Pinus patula Schiede ex Schltdl. et. Cham., es una especie nativa de México ampliamente utilizada en plantaciones comerciales en diferentes regiones del mundo; la especie ha sido mejorada en el extranjero, y es necesario evaluar el material al ser reintroducido a su país de origen. Se comparó el crecimiento de 36 familias de medios hermanos seleccionadas en Colombia y Sudáfrica, reintroducidas en México (grupo R) y 36 familias de medios hermanos escogidas fenotípicamente en rodales naturales (grupo N), en dos sitios con ambientes contrastantes: Aquixtla, Puebla, a 2,930 m (S1) y Acaxochitlán, Hidalgo, a 2,260 m (S2). Se midió el diámetro normal, la altura total y el volumen del fuste a los siete y ocho años de edad, y la conformación del árbol y el número... |
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Palavras-chave: Análisis de estabilidad; Correlación genética tipo B; Crecimiento; Ganancia genética; Heredabilidad; IGA; Parámetros genéticos; Pinus patula; Progenies; Reintroducción; Adaptation; Ecovalence; Genetic stability; Genetic gain; Genetic parameters; Growth rate; GEI; Heritability; Progeny test; Type-B genetic correlation; Reintroduction; Forestal; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1892 |
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| De Donato,Marcos; Ramirez,Raúl; Howell,Chris; Verginelli,Roberto; Orta,Tomás; Cabrera,Saúl; Mata,Enrique; Manrique,Ramón. |
| We investigated the effects of family selection on the growth rates of four genetic lines of Litopenaeus vannamei, the Pacific white shrimp, from Venezuela. The mean family weight at selection was 16.79 g and the mean growth rate was 0.169 g d-1 at a mean age of 138 days. The mean growth rates per generation were 0.141 g d-1 for the parental generation (P0), 0.173 g d-1 for the F1 and 0.191 g d-1 for the F2. Survival varied from 83.3% to 94.4%. There were statistically significant differences between lines, with lines B and C, growing at higher temperatures and lower salinities, showing the fastest growth. Regression analysis between growth rate and age for each genetic line showed high r² values, but smaller than those shown between growth rate and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Family selection; Genetic improvement; Growth rate; Litopenaeus vannamei. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500009 |
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| Santos,Francisco GB; Negreiros,Maria Z; Medeiros,José F; Lopes,Welder AR; Soares,Alinne M; Nunes,Glauber HS; Freitas,Francisco CL. |
| In Rio Grande do Norte, the melon growers have been using the row cover on the roof of the plants to start flowering in order to reduce the population of insect pests that cause severe losses, rising production costs, especially with the application of defensive. Thus, it is important to know the best time to remove the row cover because, due to its use, it is assumed that there are changes in the physiological response of plants. In order to evaluate the growth and yield of the melon plants 'Acclaim' cultivated under protection agrotextile (TNT) for different periods, a trial was conducted at the Universidade Federal Rural do Semi-árido, Mossoró, Rio Grande do Norte state. The experimental design was a randomized complete block, with four replications, in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis melo; TNT; Growth rate; Marketable production. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000100055 |
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| Стельмах, Л. В.; Куфтаркова, Е. А.; Бабич, И. И.. |
| На основе данных, полученных на трёх станциях в прибрежных поверхностных водах Чёрного моря (в районе Севастополя) в 2006 – 2007 гг., представлена сезонная динамика удельной скорости роста фитопланктонного сообщества. В течение года этот показатель изменялся приблизительно на порядок. Максимальные значения (2.00 – 2.70 сутки-1) наблюдались в периоды весеннего и осеннего «цветения» воды, вызванного диатомовой водорослью Chaetoceros socialis. Минимальные величины (0.06 – 0.10 сутки-1) отмечены зимой, когда в планктоне доминировали два вида диатомовых водорослей Sceletonema costatum и C. socialis. Получены количественные зависимости между концентрацией нитратов и кремния, с одной стороны, и удельной скоростью роста фитопланктона, с другой. Основным фактором,... |
| Tipo: Journal Contribution |
Palavras-chave: Фитопланктон; Скорость роста; Хлорофилл a; Биогенные вещества; Чёрное море; Phytoplankton; Growth rate; Chlorophyll a; Nutrients; Black Sea; Фітопланктон; Швидкість росту; Хлорофіл a; Біогенні сполуки; Чорне море. |
| Ano: 2009 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/843 |
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| Акимов, А. И.; Ефимова, Т. В.. |
| У Synechococcus elongatus, адаптированной к свету различного спектрального состава (белый, синий, зелёный, красный), максимальная скорость роста наблюдалась на красном свету, а минимальная – на синем. На белом и зелёном свету скорости роста были примерно равны. Достоверных изменений внутриклеточного содержания пигментов и соотношения пигментов в клетках не наблюдалось, в связи с чем можно заключить, что у S. elongatus отсутствует комплиментарная хроматическая адаптация. |
| Tipo: Journal Contribution |
Palavras-chave: Адаптация; Synechococcus elongatus; Спектральный состав света; Скорость роста; Пигменты; Адаптація; Спектральний склад світла; Швидкість зростання; Пігменти; Аdaptation; Spectral light composition; Growth rate; Pigments. |
| Ano: 2010 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/1916 |
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| LIMA, J. E. F. W.; SILVA, E. M. da. |
| RESUMO: O conhecimento sobre a distribuição granulométrica de partículas sólidas é essencial para as áreas de material de construção, mecânica dos solos, física dos solos, hidrossedimentologia, entre outras. Em geral, as técnicas utilizadas para a avaliação da distribuição granulométrica de amostras resultam em valores pontuais, dependendo de posterior interpolação para o traçado da curva granulométrica e a obtenção de diâmetros característicos específicos. A transformação de valores pontuais em funções contínuas pode ser realizada por meio de modelos matemáticos. Entretanto, poucos estudos têm sido desenvolvidos com o fito de determinar o melhor modelo para o ajuste de curvas granulométricas. Sendo assim, o objetivo deste trabalho foi testar e comparar 14... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Soil chemicophysical properties; Non-linear regression; Growth rate; Growth curves.; Curva de Crescimento; Física do Solo; Granulometria; Regressão Linear; Solo; Textura do Solo.; Granules; Soil texture.. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569214 |
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| Rosas, C; Tut, J; Baeza, J; Sanchez, A; Sosa, V; Pascual, C; Arena, L; Domingues, P; Cuzon, Gerard. |
| The present study was designed to test the effects of type of binder on growth, nutritional physiology, total apparent digestibility, and some elements of the energetic balance of early O. maya juveniles. Two experiments were performed. One was aimed at evaluating the effect of type of binder on growth, nutritional physiology, and energetic balance and the other at knowing the effect of the binder on total apparent digestibility of O. maya. Binder type affected growth and survival of early O. maya juveniles. Octopuses fed alginate-bound crab meat lost weight and died, revealing that this type of binder limits nutrient absorption from the diet. In contrast, when gelatin was used as binder, energetic balance was similar to that obtained in animals fed... |
| Tipo: Text |
Palavras-chave: Growth rate; Energetic balance; Diet binder; Digestibility; Octopus maya. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3949.pdf |
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| Leruste, A.; Pasqualini, V.; Garrido, M.; Malet, Nathalie; De Wit, R.; Bec, Beatrice. |
| Short-term bioassays were conducted in Biguglia lagoon (Corsica) to study the physiological and behavioral responses of phytoplankton to N- and P-availability. Natural communities were collected in two stations representative of the two sub-basins, at three periods with contrasting environmental characteristics to address the impact of seasonal variability. These samples were separately enriched with a full N and P enrichment, and with enrichments minus N or minus P. Phytoplankton size structuration, diversity, and growth of the total phytoplankton, the micro-, nano- and ultraphytoplankton were evaluated using spectrofluorimetry, and optical microscopy. Results showed that the communities were fueled by NO3− in the wet periods (autumn and spring) and NH4+... |
| Tipo: Text |
Palavras-chave: Growth rate; Dilution experiment; Eutrophication; Functional traits. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00481/59238/61948.pdf |
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| Lorrain, Anne; Paulet, Yves-marie; Chauvaud, Laurent; Savoye, Nicolas; Nezan, Elisabeth; Guerin, Laurent. |
| The aim of this study was to characterize the daily shell growth of Pecten maximus from early 1998 to late spring 1999 in the Bay of Brest with a careful qualitative and quantitative description of the pelagic primary production. Our results, in accordance with previous studies, demonstrate that there are episodic declines in the growth rate. Concurrent events of low growth rate and large bottom-concentrations of algae following diatom blooms (Cerataulina pelagica or Rhizosolenia delicatula), suggests that this high concentration of phytoplankton on the bottom layer may affect food intake or respiratory activity of the scallops by gill clogging or oxygen depletion. In this study, silicic acid or phosphorus are inferred to be limiting factors responsible... |
| Tipo: Text |
Palavras-chave: Biscay bay; Limiting factors; Primary production; Phytoplankton cnoncentration; Pecten maximus; Growth rate. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-612.pdf |
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| Registros recuperados: 89 | |
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