Crescimento e acúmulo de macronutrientes em chicória coberta e não coberta com polipropileno

Feltrim, Anderson Luiz; Filho, Arthur Bernardes Cecílio; Rezende, Bráulio Luciano Alves; Barbosa, José Carlos

doi:10.1590/s0102-05362008000100010

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…Diante do baixo número trabalhos acerca do crescimento inicial das espécies Amburana cearensis e Spondias tuberosa e ainda, perante a necessidade de avaliar e elucidar o desenvolvimento inicial das espécies, de relevância reconhecida para o semiárido, selecionou-se um conjunto de parâmetros que constituem a técnica de análise de crescimento, esta ferramenta é bastante empregada no estudo do comportamento de cultivares sob influência de práticas agronômicas, efeitos climáticos ou de competição, e por fatores intrínsecos associados à fisiologia da planta (ANDRADE et al, 2005;GUIMARÃES;STONE;NEVES, 2008), tornando possível avaliar o crescimento parcial da planta e a contribuição dos diversos órgãos no crescimento total (FELTRIM et al, 2008). Em face do exposto, a análise de crescimento contribui, com informações relevantes, o para estabelecimento de cultivares promissoras, bem como, auxilia na compressão de como as diferentes espécies se comportam e quais estratégias utilizam frente às condições climáticas a que são submetidas.…”

Section: Introductionunclassified

Crescimento e partição de massa seca em plantas jovens de amburana (Amburana cearensis (Fr. All.) AC Smith) e de umbuzeiro (Spondias tuberosa Arr. Cam.)

et al. 2019

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ArtigosCrescimento e partição de massa seca em plantas jovens de amburana (Amburana cearensis (Fr. All.) AC Smith) e de umbuzeiro (Spondias tuberosa Arr. Cam.) 1Growth and split of the dry mass in young plants of amburana (Amburana cearensis (Fr. All.) AC Smith) and umbuzeiro (Spondias tuberosa Arr. Cam.) ResumoAs espécies amburana (Amburana cearensis (Fr. All.) A. C. Smith) e o umbuzeiro (Spondias tuberosa Arr. Cam.) possuem adaptações fisiológicas e morfológicas às condições climáticas do bioma caatinga e atualmente estão sob ameaça de extinção. Objetivou-se com a realização deste trabalho caracterizar a partição de fotoassimilados das mudas de Amburana cearenses e Spondias tuberosa buscando compreender a contribuição do sistema radicular tuberoso para a manutenção do crescimento inicial das mesmas. O estudo foi realizado na Unidade Experimental Horto Florestal da UEFS, o experimento foi disposto em delineamento em blocos casualizados, com quatro intervalos de avaliação após o transplantio das mudas (DAT) (60; 120; 180 e 240 dias). Foram avaliados os parâmetros: altura da planta, diâmetro do caule, comprimento e largura de folha e raízes tuberosas, número de folhas, área foliar e massa seca. Com base nos dados de massa seca e área foliar, foram realizados os cálculos de taxa de crescimento absoluto (TCA), taxa de crescimento relativo (TCR), taxa assimilatória líquida (TAL), razão de área foliar (RAF), área foliar específica (AFE), razão de peso foliar (RPF) e peso específico da folha (PEF). Em ambas as espécies, a partição de fotoassimilados indica que inicialmente a raiz tuberosa funciona como um dreno de alta atividade, até a finalização da sua formação, seguindo de ramos, raízes secundárias e folhas. Para grande parte dos parâmetros de crescimento, as plantas de Spondias tuberosa obtiveram médias notoriamente mais altas, assim, consequentemente, obteve maior crescimento e desenvolvimento que as mudas de Amburana cearensis. Conclui-se que a formação das raízes tuberosas ocasiona interferência no crescimento inicial das plantas de ambas as espécies. AbstractAmburana cearensis and Spondias tuberosa have physiological and morphological adaptations for the climate of caatinga biome and are under threat of extinction. The objective of this paper was to characterize the photoassimilate partition of Ambulana cearenses and Spondias tuberosa plants trying to understand the contribution of the root system to the maintenance of the initial growth of the plants. The experiment was arranged in a randomized block design, with four evaluation intervals after the transplanting of the seedlings (60, 120, 180 and 240 days). The parameters analyzed were: plant height, stem diameter, length and width of leaf, number of leaves, leaf area, tuberous roots and dry mass. From the dry mass data and total leaf area,

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Section: Introductionunclassified

Crescimento e partição de massa seca em plantas jovens de amburana (Amburana cearensis (Fr. All.) AC Smith) e de umbuzeiro (Spondias tuberosa Arr. Cam.)

et al. 2019

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“…Latifolia L.) is a leafy vegetable largely consumed cooked or as salad in Europe, Western Asia, and part of America. It is considered a rich source of bioactive compounds, such as phenolic compounds and carotenoids, which have antioxidant effects, preventing degenerative diseases in the human body (Azevedo‐Meleiro & Rodriguez‐Amaya, ; Feltrim, Cecílio Filho, Rezende, & Barbosa, ; Mascherpa, Carazzone, Marrubini, Gazzani, & Papetti, ; Tiveron et al, ).…”

Section: Introductionmentioning

confidence: 99%

Passive modified atmosphere affects the quality of minimally processed escarole

Soares

Sarantópoulos

Kluge

2018

J Food Process Preserv

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This study aimed to evaluate the quality changes of the minimally processed escarole under passive modified atmosphere, packaged in different flexible plastic packages, which included polyvinyl chloride (PVC) stretch film, low‐density polyethylene (LDPE) bag, polypropylene (PP) bag, and bi‐oriented polypropylene (BOPP) bag, during storage for 20 days at 0°C and 90%–95% RH. The atmosphere of 16% O2and 3% CO2 formed in the PVC overwrap package provided the lowest browning index and the best conservation of ascorbic acid, chlorophyll, and carotenoids. During the experiment, no differences in phenolic compounds and polyphenol oxidase activity among the treatments were observed, while the activity of peroxidase showed peaks in different analysis days. Weight loss of all samples did not exceeded 1%. The minimally processed escarole showed sensitivity to high CO2 concentrations. Thus, a simple PVC stretch film provided the best visual and nutritional preservation of the minimally processed escarole. Practical applications Escarole is one of the most consumed leafy vegetable as a minimally processed product, however, there is no information about its quality changes associated with the package. This produce is widely commercialized in the same package of other leafy vegetables. This research has focused on application of passive modified atmosphere technology for quality preservation of escarole during storage, in order to indicate the most adequate package for its quality and nutritional conservation. The results implied that the quality of minimally processed escarole is better‐maintained using PVC stretch film, which is quite different from the usual plastic bags used for minimally processed leafy vegetables. This information is quite interesting at processer and market levels in order to standardize the packaging of this product and prolong its visual and nutritional quality.

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“…It has the advantages of earliness and increased productivity (FELTRIM et al, 2008;SÁ, 2001b;OTTO et al, 2010;SALAS et al, 2008) and improved quality of the commercial product (OTTO et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments

Otto¹,

Niesing²,

Cortez³

et al. 2013

Rev. Ciênc. Agron.

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-Experiments were carried out in Ponta Grossa -PR, Brazil, in the winter and spring/summer periods with iceberg lettuces cultivars Lucy Brown and Raider Plus. The objectives were to assess the lettuce productive responses and the intensity of the microclimate modifications in five cropping systems as under shade nets Aluminet 40-O ® (AL) and ChromatiNet Vermelha ® 40 (CR), a low tunnel covered with transparent polyethylene (TU), direct cover white nonwoven (NW) and natural conditions (NT). A complete randomized design was used for both the experiments with five treatments placed in a 5x2 factorial arrangement (cropping systems x cultivars) and four replications. The photosynthetically active radiation and air temperature were monitored by installing probes in a datalogger system. In the winter both cultivars under NW and TU produced 21 days earlier compared to the other environments but they presented fresh commercial head similar to NT at the end of the cycle and superior to CR and AL. In the spring/summer there was no difference in the lettuce cycle regardless of the cultivar and the cropping systems. The Lucy Brown cultivar presented smaller sized heads for the winter cropping but did not differ from Raider Plus during the spring/summer. The mean air temperature of the air under NW was higher than in the other environments in both experiments. The use of the different covering materials reduced the photosynthetically active radiation available to the plant but did not prevent commercial head production of Iceberg lettuce.

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Crescimento e acúmulo de macronutrientes em chicória coberta e não coberta com polipropileno

Cited by 7 publications

References 5 publications

Crescimento e partição de massa seca em plantas jovens de amburana (<i>Amburana cearensis</i> (Fr. All.) AC Smith) e de umbuzeiro (<i>Spondias tuberosa</i> Arr. Cam.)

Crescimento e partição de massa seca em plantas jovens de amburana (<i>Amburana cearensis</i> (Fr. All.) AC Smith) e de umbuzeiro (<i>Spondias tuberosa</i> Arr. Cam.)

Passive modified atmosphere affects the quality of minimally processed escarole

Microclimatic modifications and productive responses of the Iceberg lettuce (Lactuca sativa) in protected environments

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