Fotossíntese, condutância estomática e produtividade de clones de Eucalyptus sob diferentes condições edafoclimáticas

Otto, Marina Shinkai Gentil; Vergani, Aline Regina; Gonçalves, Antônio Natal; Vrechi, Arthur; Silva, Sérgio Ricardo; Stape, José Luiz

doi:10.1590/s0100-67622013000300006

Cited by 24 publications

(27 citation statements)

References 16 publications

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“…Photosynthetic rate is one of the factors responsible for the higher productivity of Eucalyptus with a linear relationship between maximum photosynthesis and productivity (Otto et al, 2013). Values are equivalent to the photosynthetic rates of Eucalyptus plants submitted to water deficit (1.2 to 3.4 μmol CO 2 m -2 s -1 ) and water availability (12.5 to 16.4 μmol CO 2 m -2 s -1 ) (Otto et al, 2013), showing that nutritional deficiency in Eucalyptus can be as limiting to photosynthesis and, consequently, to productivity as water deficiency. The transpiration rate (E) was higher in plants fertilized with 30, 60 or 90 Mg ha -1 sewage sludge.…”

Section: Resultsmentioning

confidence: 99%

Nutrition and physiology of hybrid Eucalyptus urograndis in soil fertilized with sewage sludge

Zabotto¹,

Gomes²,

Mateus

et al. 2020

Emir J Food Agric

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Sewage sludge is a residual pollutant product from the treatment of urban effluent and must be adequately processed before final disposal in order to avoid environmental contamination. The use of sewage sludge in agricultural and forestry areas can improve the physical, chemical and biological properties of soil; it can also be a source of nutrients, increasing crop productivity. Accordingly, this study aimed to evaluate the growth and development of hybrid Eucalyptus urograndis (Eucalyptus grandis x E. urophylla) seedlings cultivated in soil with different doses of sewage sludge. To accomplish this, hybrid E. urograndis seedlings were cultivated for 120 days in pots containing soil (dystrophic Red-Yellow Latosol -LVA) with different doses of sewage sludge (0, 30, 60 or 90 Mg ha-1). The experiment was carried out in a randomized complete block design consisting of four treatments, three replications with four plants per replication, totaling 48 plants. Biometric, biomass and physiological variables (chlorophyll, gaseous exchange, stomatal conductance and transpiration); in addition to macro- and micronutrient contents in leaves and soils of each treatment were evaluated. The treatments with sewage sludge were statistically superior to control treatment for all variables. Therefore, we recommend the application of 60 Mg ha-1 sewage sludge for the growth of hybrid Eucalyptus urograndis seedlings. Conversely, 90 Mg ha-1 sewage sludge inhibited hybrid E. urograndis root growth. Moreover, the use of sewage sludge as organic fertilizer in tropical soils is a viable and sustainable alternative for Eucalyptus cultivation.

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Section: Resultsmentioning

confidence: 99%

Nutrition and physiology of hybrid Eucalyptus urograndis in soil fertilized with sewage sludge

Zabotto¹,

Gomes²,

Mateus

et al. 2020

Emir J Food Agric

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show abstract

“…Além dos sintomas visuais, como a identificação do secamento e enrolamento de folhas, diversos parâmetros são usados para avaliar a reposta das espécies vegetais ao estresse hídrico foliar (MORGAN, 1991) como a condutância estomática (OTTO et al, 2013), a taxa de transpiração (ALBUQUERQUE et al, 2013, SUN et al, 2014, potencial osmótico e conteúdo relativo de água (ARNDT et al, 2015, FERNANDES et al, 2015.…”

Section: Introductionunclassified

Resposta hiperespectral na determinação do conteúdo de água na folha em diferentes espécies de <i>Eucalyptus</i> spp.

Strabeli¹

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“…In general, the response of plants to environmental conditions is evaluated by the qualitative and quantitative description of their physiological behavior (Venema et al, 2008;Otto et al, 2013). However, the base air temperature limiting leaf or node emissions is commonly estimated by mathematical models.…”

Section: Introductionmentioning

confidence: 99%

Base temperature for node emission and plastochron determination in tomato species and their hybrids

Zeist

Resende

Faria

et al. 2018

Pesq. agropec. bras.

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-The objective of this work was to estimate the base temperature for node emission and plastochron determination in wild species of tomato, in the Redenção cultivar, and in their respective interspecific F 1 hybrids. The wild accessions Solanum pimpinellifolium AF 26970, Solanum galapagense LA-1401, Solanum peruvianum AF 19684, Solanum habrochaites var. hirsutum PI-127826, Solanum habrochaites var. glabratum PI-134417, and Solanum pennellii LA-716; the cultivar Redenção (Solanum lycopersicum); and their respective interspecific hybrids were evaluated, on the transplanting dates 12/22/2015, 2/12/2016, and 4/6/2016. The base temperature was estimated using the least mean squared error of the linear regression between the number of nodes and the accumulated thermal sum. The plastochron for the main stem and the first three lateral stems was estimated using the base temperature. The base temperature for node emission and plastochron determination varied from 4.5 to 14.8°C. The species S. habrochaites var. hirsutum accession PI-127826, S. habrochaites var. glabratum accession PI-134417, and their hybrids with the Redenção cultivar showed the lowest base temperatures and plastochron for the main stem, whereas the remaining wild species and interspecific hybrids had a base temperature near that of cultivated tomato. Wild species and interspecific hybrids of tomato show a great variation in base temperature for node emission and plastochron determination.Index terms: Solanum lycopersicum, pre-breeding, thermal time, wild accessions. Temperatura-base para emissão de nós e determinação de plastocrono em espécies de tomateiro e seus híbridosResumo -O objetivo deste trabalho foi estimar a temperatura-base para emissão de nós e determinação de plastocrono em espécies silvestres de tomateiro, na cultivar Redenção e em seus respectivos híbridos interespecíficos F 1 . Avaliaram-se os acessos silvestres Solanum pimpinellifolium AF 26970, Solanum galapagense LA-1401, Solanum peruvianum AF 19684, Solanum habrochaites var. hirsutum PI-127826, Solanum habrochaites var. glabratum PI-134417 e Solanum pennellii LA-716; a cultivar Redenção (Solanum lycopersicum); e os seus respectivos híbridos interespecíficos, nas datas de transplantio 22/12/2015, 12/2/2016 e 6/4/2016. A temperatura-base foi estimada com o método do menor quadrado médio do erro da regressão linear entre o número de nós e a soma térmica acumulada. O plastocrono para a haste principal e as três primeiras hastes laterais foi estimado com uso da temperatura-base. A temperatura base para emissão de nós e determinação do plastocrono variou entre 4,5 e 14,8°C. As espécies S. habrochaites var. hirsutum acesso PI-127826, S. habrochaites var. glabratum acesso PI-134417 e os respectivos híbridos com a cultivar Redenção apresentaram os menores valores de temperatura-base e plastocrono da haste principal, enquanto as demais espécies silvestres e os híbridos interespecíficos tiveram temperatura-base próxima à do tomateiro cultivado. As espécies silvestres e os híbridos inte...

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Fotossíntese, condutância estomática e produtividade de clones de Eucalyptus sob diferentes condições edafoclimáticas

Cited by 24 publications

References 16 publications

Nutrition and physiology of hybrid Eucalyptus urograndis in soil fertilized with sewage sludge

Nutrition and physiology of hybrid Eucalyptus urograndis in soil fertilized with sewage sludge

Resposta hiperespectral na determinação do conteúdo de água na folha em diferentes espécies de <i>Eucalyptus</i> spp.

Base temperature for node emission and plastochron determination in tomato species and their hybrids

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