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| Garrido,Marco; Román,Luis; Silva,Paola; Castellaro,Giorgio; García de Cortázar,Víctor; Acevedo,Edmundo. |
| The genetic coefficients, representative of a crop, are necessary to use growth models; in many cases the range of the species is known, but there are no specific values for varieties. Durum wheat (Triticum turgidumL. ssp. durum)'Llareta-INIA' and 'Corcolén-INIA' were sown under irrigation in the experiment station Antumapu of the Universidad de Chile on 29 June 2007, 19 May 2009, and 15 June 2010 in order to determinate four genetic coefficients: developmental thermal time, phyllochron (PHLN), extinction coefficient (k), and radiation use efficiency (RUE), and to evaluate the performance of these coefficients. Thermal times to anthesis and from anthesis to physiological maturity were 652 and 541 °C d, respectively. Two PHLN values were found, 46.6 °C d... |
| Tipo: Journal article |
Palavras-chave: Simulation; Thermal time; Radiation use efficiency; Extinction coefficient. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200002 |
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| SANTOS, T. B.; MENEZES, R. F. J.; AIDAR, S. de T.; LOPES, P. R. C.; FREITAS, S. T. de. |
| O objetivo deste trabalho foi caracterizar o índice de clorofi las a e b e a área foliar de genótipos de macieira (Malus domestica, Borkh.) cultivados com e sem sombreamento no Vale do São Francisco. O experimento foi realizado no Campo Experimental de Bebedouro, pertencente à Embrapa Semiárido, Petrolina, PE. Foram utilizadas folhas de macieiras sadias, maduras e completamente expandidas de dois genótipos, ?Julieta? e ?Monalisa?. As plantas foram cultivas sob tela de sombreamento com radiação solar global de 10 MJ m-2 dia-1 (50% de redução na radiação solar global), ou sem tela com radiação solar global de 20 MJ m-2 dia-1. O delineamento experimental foi inteiramente casualizado, em parcela subdividida 2 x 2 (2 genótipos e 2 níveis de sombreamentos). A... |
| Tipo: Parte de livro |
Palavras-chave: Plasticidade fenotípica; Macieira; Vale do Sã Francisco; Maçã; Clorofila; Sombreamento; Fenótipo; Radiação; Temperatura; Apples; Radiation resistance; Radiation use efficiency; Ambient temperature; Temperature. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103540 |
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| SCHWERZ,FELIPE; CARON,BRAULIO O.; ELLI,ELVIS F.; STOLZLE,JOHN R.; MEDEIROS,SANDRO L.P.; SGARBOSSA,JAQUELINE; ROCKENBACH,ANA P.. |
| Abstract: Despite its economic importance, the microclimate in soybean canopies has not yet been studied in detail. Such a study can yield valuable information regarding the interaction of a crop with its environment. In this context, the aim of this study was to evaluate the solar radiation dynamic and yield responses for each canopy strata for two soybean cultivars with determined and undetermined growth habits. A field study was conducted during the 2013/2014 and 2014/2015 growing seasons in the city of Frederico Westphalen, Rio Grande do Sul, Brazil. The cultivar NA6411, with a determinate growth habit, presented a greater interception of radiation in the middle and lower canopies strata which results in higher soybean yield when compared to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canopy architecture; Glycine max L.; Radiation use efficiency; Extinction coefficient. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500861 |
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| SOUZA, P. J. de O. P. de; RIBEIRO, A.; ROCHA, E. J. P. da; FARIAS, J. R. B.; LOUREIRO, R. S.; BISPO, C. C.; SAMPAIO, L.. |
| Abstract The objective of this work was to evaluate the ef? ciency of soybean (Glycine max) in intercepting and using solar radiation under natural ? eld conditions, in the Amazon region, Brazil. The meteorological data and the values of soybean growth and leaf area were obtained from an agrometeorological experiment carried out in Paragominas, Pará state, during 2007 and 2008. The radiation use ef? ciency (RUE) was obtained from the ratio between the above-ground biomass production and the intercepted photosynthetically active radiation (PAR) accumulated to 99 and 95 days after sowing, in 2007 and 2008, respectively. Climatic conditions during the experiment were very distinct, with reduction in rainfall in 2007, which began during the soybean mid-cycle,... |
| Tipo: Artigo de periódico |
Palavras-chave: Interceptação da radiação; Radiation interception; Região amazônica; Índice de área foliar; Soybean.; Soja; Fisiologia vegetal; Área foliar; Radiação solar; Glycine Max.; Radiation use efficiency; Plant physiology; Leaf area index; Amazonia.. |
| Ano: 2009 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/579467 |
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