Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints

Gatti, M. Genoveva; Campanello, Paula I.; Goldstein, Guillermo

doi:10.1016/j.flora.2011.04.004

Cited by 37 publications

(29 citation statements)

References 45 publications

(59 reference statements)

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“…In present study, the highest specific leaf areas of both species were detected under low light conditions (Fig. 2d), which consists with many previous studies (Gatti et al, 2011;Naramoto et al, 2006;Valladares et al, 2002;Yamashita et al, 2000). A high specific leaf area under shady conditions allows seedlings to capture light resources with less investment per area unit to the leaves, thus increasing shade tolerance.…”

Section: Plant Growthsupporting

confidence: 90%

“…This strategy was adopted by several species (Gatti et al, 2011;Saldaňa-Acosta et al, 2009;Valladares et al, 2002). The present results obtained from the middle successional A. truncatum do not appear to support this hypothesis: the root to shoot ratio was higher in CL-treated plants than in those subjected to CH or LH treatments, suggesting that under low light conditions, A. truncatum seedlings allocate more resources to the roots.…”

Section: Plant Growthmentioning

confidence: 99%

“…A number of investigations have been conducted to examine plant morphological and physiological responses to variations in illumination (Gatti et al, 2011;Guo et al, 2013;Naramoto et al, 2006;Saldaňa-Acosta et al, 2009;Tobita et al, 2010;Valladares et al, 2002;Yamashita et al, 2000). In some of these studies, plants were subjected to low light illumination for some time and then were transferred to high light condition.…”

Section: Introductionmentioning

confidence: 99%

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Acer truncatum seedlings are more plastic than Quercus variabilis seedlings in response to different light regimes

Guo

Wang

et al. 2016

Dendrobiology

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Abstract:In this study, we investigated responses of the mid-successional species Acer truncatum Bunge and the late-successional species Quercus variabilis Blume to three solar illumination conditions: (1) constant low light (CL), (2) constant high light (CH) and (3) low light first and high light afterwards (LH). The last treatment was to simulate a canopy opening. Both species exhibited increases in biomass, totally and in part, and decreases in leaf water content, specific leaf area and chlorophyll concentrations in LH treatment compared to CL treatment. For A. truncatum, exposure to high light condition (LH) increased crown area, and decreased root to shoot ratio, stem mass ratio and leaf perimeter. However, for Q. variabilis, LH treatment increased stem diameter at ground height, effective quantum yield, photochemical quenching and decreased maximum photosystem II quantum yield. The biomass allocation pattern did not change in Q. variabilis among three light conditions. With respect to newly developed leaves, no significant differences were found in leaf size of Q. variabilis between LH treatment and CH treatment while that of A. truncatum decreased in LH treatment. All chlorophyll fluorescence parameters in newly developed oak leaves in LH treatment increased compared to those of CH treatment while no difference was found for A. truncatum between LH and CH treatment. A. truncatum displayed a greater overall plasticity than Q. variabilis although the oak seedlings have a greater plasticity with respect to chlorophyll concentration and chlorophyll fluorescence parameters. A. truncatum should be a better candidate for vegetation recovery, especially in places with heterogeneous light conditions.

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Section: Plant Growthsupporting

confidence: 90%

Section: Plant Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acer truncatum seedlings are more plastic than Quercus variabilis seedlings in response to different light regimes

Guo

Wang

et al. 2016

Dendrobiology

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“…The juçara palm (Euterpe edulis Martius) is a native species of the Atlantic forest (CEMBRANELI et al, 2009) of significant ecological and economic importance (GATTI et al, 2011). The juçara palm is currently at risk of extinction (GANEM, 2010), mainly because of the illegal extraction of hearts of palm in forest remnants (BARROSO et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Repeatability of biometric characteristics of Juçara palm fruit

Marçal¹,

Guilhen²,

Oliveira³

et al. 2016

Biosci. J.

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Juçara is a plant that occurs in the Brazilian Atlantic Forest which presents high ecological importance to the biodiversity and is present on the list of endangered species. The fruits are known as super fruits because they present chemical characteristics of great importance. Due to its elevated economic importance and for the low number of researches with this species, the first step is to make the pre-breeding of the species. This consists in morphological characterization, which is very dependent on time and labour. Thus, the decrease of the number of evaluated measurements by individual is of great importance to the phases of pre-breeding and breeding. The objective of this work was to obtain estimates of the coefficients of repeatability and determination of six Euterpe edulis fruit characteristics to enable the prediction of the necessary number of measurements required to achieve given levels of certainty for the real values for each of the six fruit characteristics. The performances of various methods for repeatability estimation were compared. The characteristics longitudinal diameters of the fruits, longitudinal diameters of the seeds, equatorial diameters of the fruits, equatorial diameters of the seeds, fruit weights and seed weights of juçara palm fruits were measured, and the deviances, the coefficients of repeatability, the coefficients of determination, and the necessary numbers measurements for an accurate prediction of the real value of the population were estimated. The methods used do not differ as to estimate the repeatability coefficient to the longitudinal diameter characteristics of the fruit, seed equatorial diameter, fruit mass and seed mass. With 95% reliability is possible to use four (4) for mass measurements of fruit and five (5) measurements for longitudinal diameter of fruit, seed equatorial diameter, fruit mass and seed mass.

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“…Duas espécies são destaque neste gênero por apresentar grande importância econômica e cultural (GATTI et al, 2011): a juçara (E. edulis) e o açaizeiro (. oleraceae), que apresentam potencial de produção de frutos (FARIAS NETO et al, 2007;FARIAS NETO, 2008;PALUDO et al, 2012) com elevados teores de compostos funcionais e antioxidantes na polpa (COISSON et al, 2005), conferindo às mesmas a classificação de "superfruta" (SANTOS et al, 2014).…”

Section: Introductionunclassified

Correlações Genéticas E Análise De Trilha Para Caracteres De Fruto Da Palmeira Juçara

et al. 2015

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RESUMO -A palmeira Euterpe edulis é uma espécie nativa da Mata Atlântica e atualmente se encontra na lista das espécies ameaçadas de extinção. Uma alternativa para retirá-la desta lista seria o estímulo para o plantio comercial, focando o manejo dos frutos, que recebem a classificação de "superfruta" pelas suas propriedades químicas e nutricionais. Entretanto, uma etapa de extrema importância que precede a seleção de genótipos superiores é o estudo das associações entre as variáveis, pois permite traçar estratégias de seleção alternativas para maximizar os ganhos. O presente trabalho teve por objetivos estimar as correlações genéticas pelo procedimento REML/BLUP e os efeitos diretos e indiretos sobre a massa dos frutos, por meio da análise de trilha, para seis caracteres de frutos de 198 acessos de E. edulis. Foram analisados frutos de 198 genótipos de juçara coletados em 20 fragmentos florestais na região Sul e Caparaó do Estado do Espírito Santo. De cada genótipo, avaliaram-se 25 frutos para as características: diâmetro longitudinal e equatorial do fruto e da semente; e massa do fruto e da semente. Os dados obtidos foram utilizados para a estimativa das correlações genéticas através do método de máxima verossimilhança restrita e melhor predição linear não viesada (REML/BLUP). Posteriormente, as correlações genéticas entre as variáveis de fruto foram submetidas à análise de trilha. Os seis caracteres de fruto estudados apresentam associação genética positiva com magnitude superior a 0,71 pelo procedimento REML/BLUP. O diâmetro longitudinal do fruto e a massa das sementes possuem maior efeito direto sobre a massa dos frutos, o que as torna mais indicadas para aumentar as chances de sucesso na seleção de genótipos de juçara com frutos maiores. As características diâmetro longitudinal do fruto e a massa das sementes são as principais determinantes das variações na massa dos frutos. Termos para indexação: Euterpe edulis, Pré-melhoramento, Seleção de Caracteres, Análise Biométrica. GENETIC CORRELATIONS AND PATH ANALYSIS FOR FRUIT CHARACTERS OF JUÇARA PALM TREEABSTRACT -The palm tree Euterpe edulis is a native species from Mata Atlântica and it is nowadays found in the list of species which are threatened by extinction. One option to withdraw it from this list would be the stimulation of the commercial planting aiming the management of fruits which receive the "super fruit" classification by their chemical and nutritional properties. However, one stage of extreme importance that precedes the superior genotypes selection is the study of associations among the variables, because it allows delineating alternate selection strategies to maximize the gains. The present study had as objective to estimate the genetic correlations by the REML/BLUP procedure and the direct and indirect effects upon fruit mass by path analysis for six fruit characters of 198 accessions of E. edulis. Fruits of 198 Juçara genotypes collected in 20 forestry fragments in the south and Caparaó region of the state of Espírito Santo were analyzed. Fro...

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Growth and leaf production in the tropical palm Euterpe edulis: Light conditions versus developmental constraints

Cited by 37 publications

References 45 publications

Acer truncatum seedlings are more plastic than Quercus variabilis seedlings in response to different light regimes

Acer truncatum seedlings are more plastic than Quercus variabilis seedlings in response to different light regimes

Repeatability of biometric characteristics of Juçara palm fruit

Correlações Genéticas E Análise De Trilha Para Caracteres De Fruto Da Palmeira Juçara

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