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| Freitas,Cleverson Henrique de; Martins,Fabrina Bolzan; Abreu,Marcel Carvalho. |
| Abstract: The objective of this work was to estimate cardinal temperatures and phyllochron for the leaf development of the eucalyptus species Corymbia citriodora and Eucalyptus urophylla, in the seedling phase. A field experiment was carried out in a completely randomized design, in a 2x11 factorial arrangement, with the two eucalyptus species, 11 sowing dates, and five replicates, in the municipality of Itajubá, in the state of Minas Gerais, Brazil. The cardinal temperatures - base, optimum, and maximum - for leaf development were, respectively, 8.7, 17.1, and 41.3°C, for C. citriodora, and 11.5, 17.1, and 40.5°C for E. urophylla. The phyllochron of C. citriodora was 62.95°C day per leaf, and that of E. urophylla was 46.03°C day per leaf, which indicates... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Air temperature; Leaf emission rate; Phyllochron; Seedling quality; Thermal requirement. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000500283 |
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| Person, Jeannine; Mahe, Kelig; Le Bayon, Nicolas; Le Delliou, Herve. |
| Growth and metabolism of juvenile European sea bass of a Western Mediterranean population were assessed at six constant temperatures (13, 16, 19, 22, 25 or 29 degreesC) in an 84-day trial. Duplicated groups of 84 fish (initial weight 80 I g) were held under O-2-concentrations close to saturation (87 mg l(-1)) and were fed to satiation. Mass gain increased as temperature increased from 13 to 25 degreesC. At 25 and 29 degreesC, growth was similar up to day 72, but a 6% decrease was observed by day 84 at 29 degreesC. Days 0-84 specific growth rates (SGR) were 0.45%,1.29% and 1.21% day(-1) at 13, 25 and 29 degreesC, respectively. The estimated temperature (7) for maximum SGR was 26 degreesC (SGR = 1.715 - 0.322T + 0.022T(2) - 4.233e(-4)T(3)). Feed intake (FI)... |
| Tipo: Text |
Palavras-chave: Oxygen consumption; Fish culture; Thermal requirement; Metabolic rate; Feeding. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-626.pdf |
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| Tecchio,Marco Antonio; Silva,Marlon Jocimar Rodrigues da; Paiva,Ana Paula Maia; Moura,Mara Fernandes; Terra,Maurilo Monteiro; Pires,Erasmo José Paioli; Leonel,Sarita. |
| Abstract: The objective of this work was to evaluate the phenological characteristics and yield of 'Vênus' grapevine (Vitis labrusca) grafted onto different rootstocks, as well the physicochemical traits of its grapes during the 2013, 2014, and 2015 crop seasons. The evaluated rootstocks were 'IAC 766', 'IAC 572', 'IAC 313' and 'IAC 571-6'. The length of the main phenological stages of the grapevine and its thermal demands were assessed during two growing seasons and expressed as days after pruning and degree-day sum, respectively. Grapevine yield and berry physicochemical characteristics were assessed during three crop seasons. 'Vênus' phenological cycle and thermal demands, as well as the chemical characteristics of its grapes, varied with the climate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca; Degree-days; Hybrid grapes; Phenological stages; Thermal requirement. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102702 |
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| Antonini,Jorge C. dos A.; Silva,Euzebio M. da; Griebeler,Nori P.; Sano,Edson E.. |
| The objective of this work was to develop and validate a mathematical model to estimate the duration of cotton (Gossypium hirsutum L. r. latifolium hutch) cycle in the State of Goiás, Brazil, by applying the method of growing degree-days (GD), and considering, simultaneously, its time-space variation. The model was developed as a linear combination of elevation, latitude, longitude, and Fourier series of time variation. The model parameters were adjusted by using multiple-linear regression to the observed GD accumulated with air temperature in the range of 15°C to 40°C. The minimum and maximum temperature records used to calculate the GD were obtained from 21 meteorological stations, considering data varying from 8 to 20 years of observation. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growing degree-days; Base temperature; Thermal requirement; Fourier series. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000400004 |
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