Abstract
Crop biomass production is related to the amount of photosynthetically active radiation intercepted and absorbed by the leaves, as well as to their efficiency of conversion of this radiant energy into chemical energy through photosynthesis. The objective of this study was to evaluate the radiation use efficiency by tomato plants (Lycopersicon esculentum Mill.) grown in different environments. Experiments were carried out in plastic-covered greenhouses with and without anti insects screens and at open air plots, in different growth periods (spring-summer and summer-autumn) during the 1999/2000 crop season. Measurements of dry above-ground biomass and leaf area index throughout both crop cycles were performed, and the incident and transmitted radiation fluxes were registered. The greenhouse with anti insects screens had less incident radiation, but resulted in higher use efficiency: 0.44 and 0.60 g dry matter mol{sup -1} during the first and second cycles, respectively. Outside the greenhouses, there was a higher amount of incident radiation, however a lower use efficiency (0.30 and 0.32 g mol{sup -1} for the first and second cycles, respectively), while the greenhouse without anti insects screens had intermediate values (0.45 and 0.53 g mol{sup -1}). (author) [Portuguese] A produção de biomassa pelas culturas está relacionada à quantidade de
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Citation Formats
Radin, B., Bergamaschi, H., Reisser, Junior, C., Barni, N. A., Matzenauer, R., and Didone, I. A.
Use efficiency of photosynthetically active radiation by tomato plants grown in different environments; Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes.
FAO: N. p.,
2003.
Web.
doi:10.1590/S0100-204X2003000900001.
Radin, B., Bergamaschi, H., Reisser, Junior, C., Barni, N. A., Matzenauer, R., & Didone, I. A.
Use efficiency of photosynthetically active radiation by tomato plants grown in different environments; Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes.
FAO.
https://doi.org/10.1590/S0100-204X2003000900001
Radin, B., Bergamaschi, H., Reisser, Junior, C., Barni, N. A., Matzenauer, R., and Didone, I. A.
2003.
"Use efficiency of photosynthetically active radiation by tomato plants grown in different environments; Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes."
FAO.
https://doi.org/10.1590/S0100-204X2003000900001.
@misc{etde_22420978,
title = {Use efficiency of photosynthetically active radiation by tomato plants grown in different environments; Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes}
author = {Radin, B., Bergamaschi, H., Reisser, Junior, C., Barni, N. A., Matzenauer, R., and Didone, I. A.}
abstractNote = {Crop biomass production is related to the amount of photosynthetically active radiation intercepted and absorbed by the leaves, as well as to their efficiency of conversion of this radiant energy into chemical energy through photosynthesis. The objective of this study was to evaluate the radiation use efficiency by tomato plants (Lycopersicon esculentum Mill.) grown in different environments. Experiments were carried out in plastic-covered greenhouses with and without anti insects screens and at open air plots, in different growth periods (spring-summer and summer-autumn) during the 1999/2000 crop season. Measurements of dry above-ground biomass and leaf area index throughout both crop cycles were performed, and the incident and transmitted radiation fluxes were registered. The greenhouse with anti insects screens had less incident radiation, but resulted in higher use efficiency: 0.44 and 0.60 g dry matter mol{sup -1} during the first and second cycles, respectively. Outside the greenhouses, there was a higher amount of incident radiation, however a lower use efficiency (0.30 and 0.32 g mol{sup -1} for the first and second cycles, respectively), while the greenhouse without anti insects screens had intermediate values (0.45 and 0.53 g mol{sup -1}). (author) [Portuguese] A produção de biomassa pelas culturas está relacionada à quantidade de radiação fotossinteticamente ativa interceptada e absorvida pelas folhas, bem como à eficiência com que estas convertem a energia radiante em energia química, pela fotossíntese. O objetivo deste trabalho foi avaliar a eficiência de uso da radiação fotossinteticamente ativa pelo tomateiro (Lycopersicon esculentum Mill.) cultivado em diferentes ambientes. Os experimentos foram realizados em estufa de plástico com e sem tela lateral antiinsetos e fora da estufa, em duas épocas (primavera-verão e verão-outono), no ano agrícola de 1999/2000. Mediu-se a matéria seca aérea e o índice de área foliar ao longo dos dois ciclos, assim como os fluxos de radiação incidente e transmitida. O ambiente em estufa com tela lateral antiinsetos teve menos radiação incidente e maior eficiência de seu uso: 0,44 e 0,60 g de matéria seca mol{sup -1}, nas primeira e segunda épocas, respectivamente. No ambiente fora da estufa, com mais radiação incidente, houve menor eficiência de seu uso (0,30 e 0,32 g mol{sup -1}), enquanto no ambiente em estufa sem tela lateral antiinsetos, foram obtidos valores intermediários de eficiência de uso da radiação (0,45 e 0,53 g mol{sup -1}). (author)}
doi = {10.1590/S0100-204X2003000900001}
journal = []
issue = {9}
volume = {38}
journal type = {AC}
place = {FAO}
year = {2003}
month = {Sep}
}
title = {Use efficiency of photosynthetically active radiation by tomato plants grown in different environments; Eficiência de uso da radiação fotossinteticamente ativa pela cultura do tomateiro em diferentes ambientes}
author = {Radin, B., Bergamaschi, H., Reisser, Junior, C., Barni, N. A., Matzenauer, R., and Didone, I. A.}
abstractNote = {Crop biomass production is related to the amount of photosynthetically active radiation intercepted and absorbed by the leaves, as well as to their efficiency of conversion of this radiant energy into chemical energy through photosynthesis. The objective of this study was to evaluate the radiation use efficiency by tomato plants (Lycopersicon esculentum Mill.) grown in different environments. Experiments were carried out in plastic-covered greenhouses with and without anti insects screens and at open air plots, in different growth periods (spring-summer and summer-autumn) during the 1999/2000 crop season. Measurements of dry above-ground biomass and leaf area index throughout both crop cycles were performed, and the incident and transmitted radiation fluxes were registered. The greenhouse with anti insects screens had less incident radiation, but resulted in higher use efficiency: 0.44 and 0.60 g dry matter mol{sup -1} during the first and second cycles, respectively. Outside the greenhouses, there was a higher amount of incident radiation, however a lower use efficiency (0.30 and 0.32 g mol{sup -1} for the first and second cycles, respectively), while the greenhouse without anti insects screens had intermediate values (0.45 and 0.53 g mol{sup -1}). (author) [Portuguese] A produção de biomassa pelas culturas está relacionada à quantidade de radiação fotossinteticamente ativa interceptada e absorvida pelas folhas, bem como à eficiência com que estas convertem a energia radiante em energia química, pela fotossíntese. O objetivo deste trabalho foi avaliar a eficiência de uso da radiação fotossinteticamente ativa pelo tomateiro (Lycopersicon esculentum Mill.) cultivado em diferentes ambientes. Os experimentos foram realizados em estufa de plástico com e sem tela lateral antiinsetos e fora da estufa, em duas épocas (primavera-verão e verão-outono), no ano agrícola de 1999/2000. Mediu-se a matéria seca aérea e o índice de área foliar ao longo dos dois ciclos, assim como os fluxos de radiação incidente e transmitida. O ambiente em estufa com tela lateral antiinsetos teve menos radiação incidente e maior eficiência de seu uso: 0,44 e 0,60 g de matéria seca mol{sup -1}, nas primeira e segunda épocas, respectivamente. No ambiente fora da estufa, com mais radiação incidente, houve menor eficiência de seu uso (0,30 e 0,32 g mol{sup -1}), enquanto no ambiente em estufa sem tela lateral antiinsetos, foram obtidos valores intermediários de eficiência de uso da radiação (0,45 e 0,53 g mol{sup -1}). (author)}
doi = {10.1590/S0100-204X2003000900001}
journal = []
issue = {9}
volume = {38}
journal type = {AC}
place = {FAO}
year = {2003}
month = {Sep}
}