Seasonal growth variation of peach palms cultivated in containers under subtropical conditions

Tucci, M. L. S.; Bovi, Marilene Leão Alves; Machado, Eduardo Caruso; Spiering, Sandra Heiden

doi:10.1590/s0103-90162007000200006

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…The substrate was a mixture 1:1:1 (v/v) of soil, sand, and cattle manure. This was sufficient to maintain nutrient levels within the range suitable to the species (van Raij and Cantarella 1996). Details of the substrate, fertilization, and plant nutritional status evaluations have been given previously ).…”

Section: Methodsmentioning

confidence: 99%

“…The height growth of peach palms was evaluated according to Tucci et al (2007). Growth data were adjusted by Boltzmann's function and the absolute growth rate (AGR) was calculated by the first derivative of the growth function.…”

Section: Methodsmentioning

confidence: 99%

“…Peach palm growth has been well studied both under Amazonian (Yuyama and Silva 2003) and subtropical conditions Bovi 2000, Vega et al 2004), over the last decades. Recently, Tucci et al (2007) showed that although under subtropical conditions peach palms were growing all year round, lower growth rates were noticed in winter, and a positive correlation between the main stem height and the average maximum, medium, and minimum temperatures of the 60 days before each evaluation was observed.…”

Section: Introductionmentioning

confidence: 99%

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Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Tucci¹,

Erismann²,

Machado³

et al. 2010

Photosynt.

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The Amazonian peach palm (Bactris gasipaes Kunth) has been grown for heart-of-palm production under subtropical conditions. As we did not see any substantial study on its photosynthesis under Amazonian or subtropical conditions, we carried out an investigation on the diurnal and seasonal variations in photosynthesis of peach palms until the first heartof-palm harvest, considering their relationship with key environmental factors. Spineless peach palms were grown in 80-L plastic pots, under irrigation. Gas exchange and chlorophyll fluorescence emission measurements were taken in late winter, mid spring, mid summer and early autumn, from 7:00 to 18:00 h, with an additional chlorophyll fluorescence measurement at 6:00 h. The highest net CO 2 assimilation (P N ), observed in mid summer, reached about 15 μmol m -2 s -1 , which was about 20% higher than the maximum values found in autumn and spring, and 60% higher than that in winter The same pattern of diurnal course for P N was observed in all seasons, showing higher values from 8:00 to 9:00 h and declining gradually from 11:00 h toward late afternoon. The diurnal course of stomatal conductance (g s ) followed the same pattern of P N , with the highest value of 0.6 mol m -2 s -1 being observed in February and the lowest one (0.23 mol m -2 s -1 ) in September. The maximal quantum yield of photosystem II (F v /F m ) was above 0.75 in the early morning in all the months. The reversible decrease was observed around midday in September and October, suggesting the occurrence of dynamic photoinhibition. A significant negative correlation between the leaf-air vapour pressure difference (VPD leaf-air ) and P N and a positive correlation between P N and g s were observed. The photosynthesis of peach palm was likely modulated mainly by the stomatal control that was quite sensible to atmospheric environmental conditions. Under subtropical conditions, air temperature (T air ) and VPD leaf-air impose more significant effects over P N of peach palm than an excessive photosynthetic photon flux density (PPFD). The occurrence of dynamic photoinhibition indicates that under irrigation, peach palms appeared to be acclimated to the full-sunlight conditions under which they have been grown.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Tucci¹,

Erismann²,

Machado³

et al. 2010

Photosynt.

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“…O diâmetro do coleto das mudas de C. hospita foi beneficiado com o uso de sementes grandes, as quais diferiram significativamente das demais classes de tamanho (Tabela 4). O maior diâmetro de coleto é uma característica desejável em mudas, porque garante maior sustentação (Farias et al, 1997;Tucci et al, 2007). Essa variável deve ser utilizada como o melhor dos indicadores de padrão de qualidade, pois com base nela, mudas delgadas, de grande altura, devem ser refugadas.…”

Section: Quadrados Médiosunclassified

Efeito do tamanho da semente, subtrato ambiente na produção de mudas de Copernicia Hospita Martius

2009

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RESUMOA carnaúba hospedeira faz parte de um grupo de plantas da família Arecaceae, de relevante importância social e econômica para as regiões tropicais. Neste trabalho, objetivou-se determinar a influência do tamanho da semente, tipo de substrato e do ambiente na produção de mudas de carnaúba hospedeira (Copernicia hospita Martius). As sementes de diferentes tamanhos (pequena, média, grande e mistura) foram semeadas em substratos constituídos de areia vermelha + bagana de carnaúba + húmus (2,5:2,5:1 em volume) e solo + arisco + composto orgânico Polefértil (2:2:1 em volume) e cultivadas em ambientes distintos (pleno sol e casa de vegetação). As variáveis analisadas foram: comprimento do limbo foliar principal, área foliar, diâmetro do coleto, comprimento da maior raiz e massa da matéria seca da parte aérea e radicular. O tamanho da semente exerceu efeito significativo sobre todas as variáveis. O substrato influenciou, significativamente, o comprimento do limbo e da maior raiz e área foliar. Quanto ao ambiente, as únicas variáveis não afetadas por esse fator foram as produções de matéria seca, tanto da parte aérea como radicular. Para a produção de mudas de C. hospita recomenda-se a utilização de sementes grandes, semeadas no substrato constituído de areia vermelha + bagana de carnaúba + húmus, em cultivo a pleno sol.Termos para indexação: Carnaúba hospedeira, biometria da semente, meio de cultivo, sombreamento. ABSTRACTThe 'Hostess' Carnauba belongs to a group of plants from the Arecaceae family, which is of relevant social and economic importance for tropical areas in Brazil. The objective of this research was to study the effect of the size of the seed , substrate, and environment on the production of seedlings of 'Hostess' Carnauba (Copernicia hospita Martius). Seeds of different sizes (small, medium, large, and a mixture of different sizes) were planted in different substrates composed of red sand + carnauba straw + humus (2,5:2,5:1 in volume) and soil + dark sand + organic compost Polefértil (2:2:1 in volume), and cultivated in different environments (outdoors and indoors). The analyzed variables were: leaf length , leaf area, stem diameter, length of the longest root, and dry matter of the above and below ground parts. The size of the seed greatly affected all of the studied variables. Substrate type significantly affected leaf length, length of the longest root, and leaf area. The only variables not affected by the environment were of the dry matter from above and below ground parts. Thus, the results suggest that large seeds should be recommended for the production of C. hospita seedlings, and should be planted in a subtract composed of red sand + carnauba straw + humus for unshaded outdoor cultivation.

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“…Concerning the vegetative growth, Tucci et al (2007) observed lower growth rates throughout the cold winter months and higher ones in summer. In parallel, the CO 2 assimilation was lower in the winter months , what have been attributed by the authors to the lower night temperatures throughout the winter.…”

Section: Introductionmentioning

confidence: 88%

Gas exchanges in peach palms as a function of the spad chlorophyll meter readings

Tucci

Modolo

Erismann³

et al. 2011

Rev. Bras. Frutic.

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The close relationship between the chlorophyll-meters readings and the total chlorophyll and nitrogen contents in leaves, has allowed their evaluation both in annual and perennial species. Besides, some physiological events such as the CO2 assimilation have also been estimated by chlorophyll meters. This work was carried out aiming to evaluate the gas exchanges of peach palms as a function of the chlorophyll SPAD-Meter readings. Three year-old peach palms from Yurimaguas, Peru were studied in Ubatuba, SP, Brazil, spaced 2 x 1 m in area under a natural gradient of organic matter which allowed four plots to be considered, according to the peach palms leaves colors, from light yellow to dark green. The SPAD readings and the stomatal frequency of leaflets were evaluated. The photosynthetic photon flux density (PPFD, μmol m-2 s-1), the leaf temperature (Tleaf, ºC), the CO2 assimilation (A, μmol m-2 s-1), the stomatal conductance (g s, mol m-2 s-1), the transpiration (E, mmol m-2 s-1) and the intercellular CO2 concentration (Ci, μmol mol-1) were evaluated with a portable infrared gas analyzer (LCA-4, ADC BioScientific Ltd., Great Amwell, U.K.). A linear increase in the CO2 assimilation as a function of the SPAD readings (y = -0.34 + 0.19x, R² = 0.99), indicates that they can be a rapid and cheap complementary method to evaluate in peach palms some important physiological events, such as CO2 assimilation.

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Seasonal growth variation of peach palms cultivated in containers under subtropical conditions

Cited by 6 publications

References 8 publications

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Diurnal and seasonal variation in photosynthesis of peach palms grown under subtropical conditions

Efeito do tamanho da semente, subtrato ambiente na produção de mudas de Copernicia Hospita Martius

Gas exchanges in peach palms as a function of the spad chlorophyll meter readings

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