Initial development and gas exchange of Talisia subalbens (Mart.) Radlk. under different shading conditions

Nery, Fernanda Carlota; Oliveira, Hilton Morbeck; Alvarenga, Amauri Alves de; Dousseau, Sara; Castro, Evaristo Mauro de; Campos, Ana Carolina Atala Lombelo

doi:10.1590/s0100-67622011000100007

Cited by 8 publications

(8 citation statements)

References 12 publications

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“…In both species the variation of light did not affect the ratio between aerial dry mass and root dry mass (Table 1), suggesting a certain balance in the biomass distribution of these species under this abiotic stress. Similar behavior was also found in studies with forest tree seedlings [5,7,22].…”

Section: Speciessupporting

confidence: 85%

Morphophysiological Behavior and Cambial Activity in Seedlings of Two Amazonian Tree Species under Shade

et al. 2015

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Variations in light intensity can lead to important anatomical and morphophysiological changes in plants. Aiming to increase knowledge about the Amazonian tree species, this study examines the influence of shade on the cambial activity and development of Parkia gigantocarpa Ducke and Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby seedlings. Seedlings of the two species were grown in a nursery under four shade intensities (treatments): full sun, low, moderate, and high shade (resp., 0%, 23%, 67%, and 73% of shade, or 2000, 1540, 660, and 540 µmol·m−2·s−1) obtained with polyethylene screens. We measured plant height, stem diameter, biomass production, stomatal conductance (gs), transpiration (E), photosynthesis (A), and cambial activity (CA) (xylem, cambium, and phloem). Also, we calculated the Dickson Quality Index (DQI). The highest values of biomass production, gs, E, A, and DQI, were found under full sun, in P. gigantocarpa, and under low shade intensity in S. parahyba. In both species high shade intensity reduced CA. We concluded that the CA and the physiological and morphological attributes work together, explaining the radial growth and increasing seedlings quality, which optimized efficient seedling production under full sun, in P. gigantocarpa, and under low shade intensity in S. parahyba.

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Section: Speciessupporting

confidence: 85%

Morphophysiological Behavior and Cambial Activity in Seedlings of Two Amazonian Tree Species under Shade

et al. 2015

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“…Assim, qualquer variação no número e ou tamanho desses pode acarretar maior ou menor eficiência da planta quanto à taxa fotossintética (Batagin et al, 2009). O número de estômatos e células epidérmicas por unidade de área é base para a determinação do índice estomático, que é utilizado para efeito de correlação com processos fisiológicos (Nery et al, 2011).…”

Section: Resultados E Discussõesunclassified

Influência do espaçamento de plantio e luminosidade no desenvolvimento de bastão-do-imperador

Nascimento

Paiva

Nery

et al. 2015

Agraria

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As plantas tropicais, apesar de já adaptadas para cultivo em regiões quentes como o nordeste brasileiro, apresentam também potencial para cultivo na região sudeste, com clima mais ameno. Dessa forma, avaliou-se o desempenho do Etlingera elatior, cultivado em diferentes condições de luminosidade e espaçamentos em cultivo na região sudeste. Rizomas das cultivares Red Torch e Porcelana foram plantados a pleno sol e 50% de sombreamento, nos espaçamentos entre plantas 2 x 2 e 2 x 1 m. As plantas foram avaliadas observando-se o índice de sobrevivência, número de perfilhos por planta, altura dos perfilhos, número de folhas por perfilho e tamanho das inflorescências, além de estudos anatômicos. O cultivo de bastão-do-imperador no período de baixas temperaturas e precipitação ocasionou a morte dos rizomas do cultivar Red Torch e crescimento inicial lento para as plantas do cultivar Porcelana. Plantas cultivadas a pleno sol apresentaram maior número de perfilhos, no entanto, a maior altura e número de folhas foram observados em plantas cultivadas sob malha de sombreamento. O cultivo a pleno sol proporcionou maior número de inflorescências, no entanto, somente as inflorescências de plantas cultivadas sob malha de sombreamento no espaçamento 2 x 1 m apresentaram características apropriadas para comercialização. Para ambos cultivares estudados, a maior densidade estomática tanto na face adaxial quanto abaxial das folhas, espessura do limbo foliar e relação DP/DE foram observados para as plantas cultivadas no espaçamento 2 x 1 m.

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“…Souza, Castro, Soares, Santos, and Alves (2011b) also found no differences in photosynthetic rate in guaco plants under colored shade nets. Additionally, stomatal conductance and photosynthesis were not changed in pitomba (Talisia subalbens) grown under different shade conditions, according to Nery et al (2011).…”

Section: Resultsmentioning

confidence: 95%

<b>Growth and physiology of jelly palm (<i>Butia capitata</i>) grown under colored shade nets

Costa

Assis

et al. 2018

Acta Sci. Agron.

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Butia capitata (Mart.) Becc., commonly known as jelly palm, is a palm tree native to the Cerrado biome. It is considered an endangered species owing to intensive extractive exploitation of its fruits, with slow and uneven seminiferous propagation as an aggravating factor. Thereby, there are some bottlenecks related to jelly palm seedling production that needs to be optimized. Light quality and intensity is very important to seedling production, as it controls the metabolism of plants and consequently their growth and development. Thus, the aim of this work is to evaluate the effect of shade nets on the growth and physiological aspects of jelly palm seedlings. The experimental design was completely randomized, with five treatments, ten replicates and eight plants per replicate, totaling 400 plants. Experimental treatments consisted of the use of shade nets with 50% shading and different radiation intensity: white (985 μmol m-2 s-1), red (327 μmol m-2 s-1), black (433 μmol m-2 s-1), and silver (405 μmol m-2 s-1). Full sun (1000 μmol m-2 s-1) was used as the control treatment. Growth and physiological analyses of the plants were performed after six months of treatment. We concluded that the red shade net increases growth and biomass of Butia capitata plants. However, the use of shade nets had no effect on the tested physiological characteristics of this species. The red shade net is the most suitable for the production of Butia capitata seedlings in the southern region conditions of Minas Gerais State.

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Initial development and gas exchange of Talisia subalbens (Mart.) Radlk. under different shading conditions

Cited by 8 publications

References 12 publications

Morphophysiological Behavior and Cambial Activity in Seedlings of Two Amazonian Tree Species under Shade

Morphophysiological Behavior and Cambial Activity in Seedlings of Two Amazonian Tree Species under Shade

Influência do espaçamento de plantio e luminosidade no desenvolvimento de bastão-do-imperador

<b>Growth and physiology of jelly palm (<i>Butia capitata</i>) grown under colored shade nets

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