Características fisiológicas de mudas de &lt;i&gt;Eucalyptus&lt;/i&gt; spp submetidas a estresse salino.

Mendonça, Andréa Vita Reis; Carneiro, José Geraldo de Araújo; Freitas, Teresa Aparecida Soares de; Barroso, Déborah Guerra

doi:10.5902/198050981850

Cited by 25 publications

(21 citation statements)

References 2 publications

(4 reference statements)

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“…This function is hindered when plants such as oiticica seedlings are subjected to salt stress, and this hindrance results in photosynthetic deficiency. Similar results were reported by Mendonça et al (2010), Silva et al (2011), Matos et al (2013), Freire et al (2014), Souza et al (2014) and Souto et al (2015) for eucalyptus (Eucalyptus spp. ), jatropha (Jatropha curcas), passion fruit and noni seedlings under irrigation with saline water.…”

Section: Resultssupporting

confidence: 89%

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

Cavalcante¹,

Neto²,

Cavalcante³

et al. 2016

Afr. J. Agric. Res.

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Licania rigida Benth. (oiticica) is a native species from the Northeastern Brazil. In this sense, the aim of this study is to evaluate the effects of irrigation with saline water and organic matter on the growth and quality of oiticica seedlings. The experiments were laid out in randomized complete block using a 5 × 2 factorial design related to electrical conductivity of irrigation water at 0.5, 1.5, 3.0, 4.5 and 6.0 dS m -1 in a substrate with and without organic castor bean compost (Ricinus communis) and soil in a volume ratio of 0:1 and 1:1 v/v. Growth in height, stem diameter, leaf number, leaf area, chlorophyll a and b and total chlorophyll indices, shoot and root dry matter and Dickson Quality Index were evaluated. The increase in water salinity inhibited biometric growth, seedlings production of root and shoot biomass, chlorophyll content and Dickson Quality Index. Increase in water salinity, except for root biomass, inhibited biometric growth, shoot biomass accumulation, chlorophyll a, b and total, chlorophyll indexes and quality index of oiticica seedlings. In the results, although the Dickson Quality Index did not decrease with increasing water salinity and did not vary among treatments with and without organic compost, the transplanting of seedlings in the field was found to be suitable.

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Section: Resultssupporting

confidence: 89%

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

Cavalcante¹,

Neto²,

Cavalcante³

et al. 2016

Afr. J. Agric. Res.

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“…However, among evaluated components, it takes second position concerning growth (Figure 3), indicating that E. benthamii tolerates high levels of salinity, as verified by Kratz et al (2013 b), in which substrates with EC ranging from 0.1 to 2.6 mS/cm provided adequate plant growth. Similarly, as verified by Mendonça et al (2010), E. camaldulensis, E. tereticornis and E. robusta seedlings showed to be resistant to salinity until electrical conductivity of 8.33 dS m -1 , and it was noticeable that it did not cause reduction in chlorophyll content, which is a major factor in plants sensitive to salinity. DOI: dx.doi.org/10.18671/scifor.v45n113.06…”

Section: Substrates Properties and Growthsupporting

confidence: 53%

Physic-chemical properties and substrate formulation for Eucalyptus seedlings production

Kratz¹,

Nogueira²,

Wendling³

et al. 2017

Sci. For.

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ResumoObjetivou-se avaliar a viabilidade de uma série de materiais para formulação de substratos, com foco em resíduos agroindustriais, e a influência de suas propriedades físico-químicas na produção de mudas de Eucalyptus benthamii, e verificar a semelhança entre os componentes testados. Foram formulados 100 tratamentos. Realizou-se semeadura direta em tubetes de 55 cm³, acondicionados em bandejas plásticas, alocadas em estufa por 120 dias. Como resultados, em relação às propriedades físicas, formaram-se quatro grupos: Grupo 1-constituído por elementos de alta macroporosidade; Grupo 2-equilíbrio entre macro e microporos, Grupo 3-maior proporção de microporos e Grupo 4-alta densidade associada à alta microporosidade. Quanto às propriedades químicas, formaram 2 grupos: Grupo 2-biossólido e Grupo 1 -demais componentes. Verificou-se maior crescimento nos substratos com maior capacidade de retenção de água e os altos níveis de condutividade elétrica e pH não prejudicaram o crescimento das mudas. A casca de pinus semidecomposta e diferentes granulometrias de moinha de carvão proporcionaram redução no crescimento quando inseridas na formulação dos substratos. O resíduo regional, biossólido, apresentou o menor custo aliado ao bom crescimento das plantas e a utilização da moinha de carvão justifica-se a fim de reduzir os custos de produção.Palavras-chave: Moinha de carvão, turfa, casca de pinus, casca de arroz carbonizada, biossólido, análise de agrupamento. AbstractBased on substrate importance for seedling production, we evaluated the feasibility of using a variety of materials, with a focus on agro-industrial residues, and the influence of their physic-chemical properties on Eucalyptus benthamii seedling production, as well as to check for similarities between the tested components. One hundred treatments were formulated. Direct seeding was performed in plastic tubes of 55 cm³, packed in plastic trays, and placed in a greenhouse for 120 days. According to physical properties, four groups were made: Group 1-elements with high macro-porosity; Group 2 -balance between macropores and micro-pores; Group 3 -higher proportion of micro-pores; and Group 4 -high density associated with high micro-porosity. Concerning chemical properties, two groups were formed: Group 2 -sewage sludge and Group 1 -other components. In general, we observed more growth in substrates with greater water-holding capacity. High levels of electric conductivity and pH did not hinder seedlings growth. Almost decomposed pine bark and different fine charcoal grain size provided reduction in growth when inserted in substrate formulation. Regional sewage sludge presented the lowest cost coupled with good plant growth, and the use of fine charcoal is justified in order to reduce production costs.

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“…However, differences were observed among genotypes, with the lowest average observed for CSM x SWC-028 (Table 4). It is known that maximum fluorescence intensity (Fm) denotes energy loss when the acceptors of PSII reactions centers reached their maximum energy absorption capacity, evidencing the reduced condition of all quinone (Q) because of electrons transferred from the P680 (BAKER; ROSENQVST, 2004;MENDONÇA et al, 2010;SILVA et al, 2014). It is also known that it directly influences variable fluorescence, which is potentially active energy in PSII and reduced activity of chlorophyll a.…”

Section: Resultsmentioning

confidence: 99%

Growth and physiology of citrus rootstocks under salt stress

Sá¹,

Brito²,

Moreira³

et al. 2018

Biosci. J.

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ABSTRACT:In order to study the growth and physiology of citrus rootstocks under saline water irrigation, during formation of rootstocks, an assay was carried out in a factorial scheme, 2 x 6, corresponding to two levels of salinity of the nutrient solution: 0.3 and 4.0 dS m -1 and six genotypes provided by the Citrus Breeding Program of Embrapa Cassava & Fruits-CBP, distributed in randomized block design with three replications. The genotypes were:

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Características fisiológicas de mudas de <i>Eucalyptus</i> spp submetidas a estresse salino.

Cited by 25 publications

References 2 publications

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

Saline water and organic matter in the development and quality of Licania rigida Benth. seedlings

Physic-chemical properties and substrate formulation for Eucalyptus seedlings production

Growth and physiology of citrus rootstocks under salt stress

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