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| Registros recuperados: 13 | |
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| Lázaro Dzul, Martha Olivia. |
| Se estudiaron diferentes dosis de fertilización NPK con relación al crecimiento de follaje nuevo e incremento de área basal, con un experimento factorial completo 33 en una plantación de P. patula Schl. et Cham. de 10 años de edad, Aquixtla, Puebla, durante el ciclo 2009-2010. Los factores fueron N (0, 138, 185), P (0, 15, 21) y K (0, 123, 164) kg ha-1. Se determinó la tasa relativa de crecimiento instantáneo en volumen y peso seco de follaje nuevo (TRCIVFN y TRCIPSFN) y la tasa relativa de crecimiento promedio de incremento de área basal (TRCPIAB). La mayor TRCIVFN (0.0255 mL mL-1 día-1) se obtuvo con la dosis 185-0-0 kg ha-1 de NPK. La TRCIPSFN presentó los valores más altos con las dosis 138-0-123 y 138-0-0 kg ha-1 de NPK, con valores de... |
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Palavras-chave: Tasa relativa de crecimiento; Follaje nuevo; Fertilizantes líquidos; Relative growth rate; Foliage; Liquid fertilizers; Maestría; Forestal. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/349 |
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| Pereira,Walter Esfrain; Siqueira,Dalmo Lopes de; Puiatti,Mario; Martínez,Carlos Alberto; Salomão,Luiz Carlos Chamhum; Cecon,Paulo Roberto. |
| Plants present different degrees of adaptation to aluminium (Al) concentrations in the soil, and the understanding of this characteristic can lead to a viable option for the utilization of acid soils. The objective of this experiment was to evaluate the effects of five Al concentrations (0, 50, 100, 200, and 400 mumol L-1) on the growth of 'Rangpur' lime (Citrus limonia Osbeck) and 'Volkamer' lemon (Citrus volkameriana Hort. ex Tan.), and tangerine rootstocks 'Cleópatra' (Citrus reshni Hort. ex Tan) and 'Sunki' (Citrus sunki Hort. ex Tan.), in hydroponic culture. The treatments were arranged in a randomized block design, with four replications. For all rootstocks, the relative growth rate in terms of plant total fresh matter increased under low and,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sp.; Relative growth rate; Principal components; Nutrient solution. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100006 |
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| Gonçalves,José Francisco de Carvalho; Barreto,Denize Caranhas de Sousa; Santos Junior,Ulysses Moreira dos; Fernandes,Andreia Varmes; Sampaio,Paulo de Tarso Barbosa; Buckeridge,Marcos Silveira. |
| Aniba rosaeodora is an Amazonian tree species that belongs to the family Lauraceae. Due to intense exploitation for extraction of essential oils (mainly linalol), A. rosaeodora is now considered an endangered species. On the other hand, there is little information about its ecophysiology which would be useful to support future forest planting programs. Hence, the effect of different light intensities on the growth and photosynthetic characteristics of young plants of A. rosaeodora was studied. Nine-month-old plants were subjected to four light treatments (T1= 10 a 250 µmol.m-2.s-1 / control; T2=500 to 800, T3=700 to 1000 and T4=1300 to 1800 µmol.m-2.s-1 / full sunlight). Allometric variables, gas exchange, contents of pigments and chlorophyll a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll a fluorescence; Chloroplast pigment contents; Gas exchanges; Photochemical efficiency of photosystem II; Relative growth rate; Tropical species. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300007 |
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| Santos,Elcio Ferreira; Macedo,Fernando Giovannetti; Zanchim,Bruno José; Camacho,Marcos Antonio; Lavres,José. |
| ABSTRACT Jatropha seeds oil can replace fossil fuels, but the nutrient supply management for this species is not fully described. The objective with this work was to establish curves of macronutrient (nitrogen - N; phosphorus - P; potassium - K; calcium - Ca; magnesium - Mg and sulfur - S) content in leaves, stem and roots, and to evaluate the relative growth rate (RGR), absolute growth rate (AGR) and the foliar mass ratio (FMR). The experiment was arranged in completely randomized design with five replications. Jatropha plants were grown in nutrient solution and collected at intervals of 14 up to 119 days after treatments started. The period of highest uptake of nutrients occurred from 7 to 35 days after treatments started, which coincides with highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas; Nutrient uptake; Relative growth rate; Macronutrients uptake curves; Macronutrient uptake rates. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400565 |
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| Inostroza,Luis; Quezada,Celerino; Inostroza,Wladimir; Matus,Iván; Tapia,Maritza; del Pozo,Alejandro. |
| The seedling vigor of 80 barley recombinant chromosome substitution lines (RCSLs) was measured for selecting high seedling vigor genotypes. The RCSLs were derived from a cross between H. vulgare subsp. spontaneum and H. vulgare subsp. vulgare 'Harrington'. The work was carried out under greenhouse conditions during the summer of 2008. The experimental design was an alpha lattice with 3 replicates. In each replicate, 40 plants were established, distributed in eight polyethylene pots containing sand as substrate, which were fertilized an irrigated. The emergence of seedlings, number of leaves and shoots, dry matter of leaves, shoots and roots and leaf area of fully expanded leaves were measured. In addition, growth indices were calculated: emergence rate,... |
| Tipo: Journal article |
Palavras-chave: Plant growth analysis; Relative growth rate; Net assimilation rate; Allometric coefficient. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100013 |
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| Karaman,E; Firat,MZ; Narinc,D. |
| The aim of this study was to estimate the heritability for some growth traits of Japanese quail through the estimation of variance components by Bayesian methodology. For this purpose, 340 progenies of 34 sires were used. Live weight (LW42) and absolute and relative growth rates at 42 days of age (AGR42 and RGR42, respectively) were submitted to single-trait analysis under a sire model. A software (package MCMCglmm) was used for the estimations, and a single chain with 65,000 rounds was run for each trait with a thinning interval of 50. Burn-in was set at 15,000 and inferences were built on posterior samples of 1,000 draws for each trait. All marginal posterior densities were unimodal and marginal posterior distributions of sire variance are slightly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Absolute growth rate; Bayesian; Heritability; Quail; Relative growth rate. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200007 |
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| Allaman,Ivan Bezerra; Reis Neto,Rafael Vilhena; Freitas,Rilke Tadeu Fonseca de; Freato,Thiago Archangelo; Lago,Aline de Assis; Costa,Adriano Carvalho; Lima,Renato Ribeiro de. |
| The objective of this study was to evaluate the morphometric growth and weight gain of strains of tilapia (Thai, Red, UFLA and Commercial) by nonlinear models. Initially, 500 male fingerlings of each strain, at 85 (Red and UFLA) and 86 (Thai and Commercial) days of age, were stocked separately in raceways with 56 m³. Twenty fish of each strain were randomly sampled, weighed and measured monthly. Five nonlinear models (Brody, von Bertalanffy, Gompertz, logistic and exponential) were tested, choosing one that best fit to the data. The variables studied were: weight, standard length (SL), head length (HL), height 1 (H1), height 2 (H2), height 3 (H3), first distance (D1), second distance (D2), first width (W1), second width (W2) and third width (W3). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Absolute growth rate; Aquaculture; Nonlinear models; Relative growth rate. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000500001 |
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| Registros recuperados: 13 | |
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