Relações entre parte aérea e raízes em povoamentos de teca

Behling, Maurel; Felipe, Rafaella Teles Arantes; Farias, Jaqueline Bento; Carvalho, Géssica De; Neves, Júlio César Lima

doi:10.1590/0034-737x201865060001

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…When the above-ground carbon stock was determined in a Brazilian teak stand at different ages, Almeida et al ( 2010) obtained mean values of 5.62 t of C per ha -1 at 2.5 years and 14.15 t of C per ha -1 at 3.5 years, which is similar to those estimated in the present study. However, below-ground stock results were higher, with 6.7 t of C per ha -1 at 2.5 years and 4.9 t of C per ha -1 at 3.5 years, due to the differences in the soil chemical elements available for teak roots' development (Behling et al 2018).…”

Section: Resultsmentioning

confidence: 90%

Geostatistical Modelling of Below- And Aboveground Carbon Stocks of Teak Stands at Different Ages

Pfutz¹,

Pelissari²,

Rodrigues³

et al. 2021

JTFS

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Well managed teak stands can contribute towards mitigation of climate change by storing carbon in their solid wood products. However, spatial estimates of teak's potential carbon stocks is lacking in the support of precision forest management. The aim of this study was to estimate the carbon in above-and belowground biomass of teak stands and predict their spatial variabilities. Tree data were measured biennially in 46 permanent plots of 213 ha, between 2 nd and 12 th year, in which thinning was performed at 5 th , 8 th and 11 th year. Carbon stocks were estimated using equations, and geostatistical modelling was carried out by semivariance analyses and ordinary kriging method. Above-ground carbon mean values ranged between 2.95 and 59.10 t ha -1 , with reduction to 57.61 t ha -1 after third thinning. Minimum and maximum belowground carbon mean values were 0.67 and 8.06 t ha -1 respectively, decreasing to 7.51 t ha -1 after last thinning. Carbon stocks increased over the years and showed spatial dependence, however, they were influenced by the thinning. Teak stands presented potential carbon stores since the carbon remained in their solid wood products, compared to other species used for energy, pulp and paper. This evidence showed the importance of teak in mitigating climate change.

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Section: Resultsmentioning

confidence: 90%

Geostatistical Modelling of Below- And Aboveground Carbon Stocks of Teak Stands at Different Ages

Pfutz¹,

Pelissari²,

Rodrigues³

et al. 2021

JTFS

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“…Among the vermicompost substrates, the substrate V4 had the worst performance, differing statistically from the substrates V1 and V2, these being the treatments with greater root growth and more branched roots. Behling et al (2018), studying the relationship between shoot and roots in teak plants, concluded that there are significant, linear and potential relations between the aerial part and the roots of the species, and that leaf area (LA) is a good estimator of the root surface area of teak plants, with the photosynthetic rate per unit of leaf area modulated by the root system. The results of this study indicate the same pattern for P. dubium plants, with higher results of LA in vermicompost substrates than the commercial substrate (control).…”

Section: Resultsmentioning

confidence: 99%

MORPHOLOGICAL ANALYSIS AND ACCUMULATION OF NUTRIENTS IN Peltophorum dubium (Spreng.) Taub. SEEDLINGS PRODUCED IN ORGANIC SUBSTRATES WITH DIFFERENT PROPORTIONS

Astolfi

Mota

Pontes

et al. 2020

Rev. Agric. Neotrop.

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Environmental conservation and regeneration actions must consider plant species that add value by restoring structural and functional aspects of the ecosystem. The forest species, Peltophorum dubium, has several characteristics that make its use viable in projects of restoration of degraded areas, making it necessary to study the species' responses to different cultivation environments. Thus, 500 seeds were selected and sown in vermicompost substrates prepared with different proportions of cattle rumen content (CR) and sugarcane bagasse (SB) (V1 - 60% CR x 40% SB / V2 - 50% CR x 50 % SB / V3 - 40% CR x 60% SB / V4 - 70% CR x 30% SB) and in an commercial substrate (Plantmax®). At 79 days after sowing, 20 seedlings per treatment were removed; they were weighed and measured, resulting in growth, dry matter, and vigor data. The vermicompost substrates were sent to the chemical analysis laboratory to determine their chemical composition. The data were submitted to normality analysis. Analysis of variance was performed for normal data and the Kruskal Wallis test for data that did not show normality. The means or medians were compared using the Tukey test at a 5% probability level. Based on the results related to the growth and vigor of P. dubium seedlings, it is possible to state that the productive potential of the species was higher in the vermicompost substrates.

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“…The results of this study suggest that melatonin was correlated with higher shoot dry matter weight, indicating that it stimulates greater allocation of dry matter to shoots than to roots, which is also shown by the lower RS. According to Behling et al 30 , the relationship between leaf dry matter and root dry matter reflects an approximate source and sink relationship. At 69 DAP, the M43 treatment provided a larger source area, which may be reflected in a higher CO 2 content being fixed and redistributed throughout the plant.…”

Section: Discussionmentioning

confidence: 99%

IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica L. cuttings

de Andrade,

Ferreira,

Azevedo

et al. 2023

Sci Rep

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Caffeine and trigonelline are found in Coffea arabica, and show antioxidant roles and growth and development functions. However, there are no reports on trigonelline and caffeine in relation to coffee rooting. The aim was to evaluate the impact of application of indole-3-butyric acid (IBA) and melatonin on caffeine and trigonelline at different stages of adventitious rooting in cuttings. In addition, to study the correlation between these metabolites and H2O2, phenols, and antioxidant enzymes. Four treatments (Control, melatonin 21 µM (M21), melatonin 43 µM (M43), and IBA 7380 µM (IBA)) were used, with four replications. The growth and biochemical parameters of the antioxidant system were performed in induction, initiation, and extension rooting stages. Higher concentrations of trigonelline and caffeine quantified in the induction and initiation stages were positively correlated with higher percentage of rooted cuttings. Trigonelline and caffeine were positively correlated with H2O2 in all stages of development of adventitious roots. The correlations of trigoneline and caffeine with phenols and antioxidant enzymes reveal different profiles, depending on the phases. The results indicate that IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica cuttings, which is correlated with a higher percentage of rooted cuttings.

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Relações entre parte aérea e raízes em povoamentos de teca

Cited by 5 publications

References 30 publications

Geostatistical Modelling of Below- And Aboveground Carbon Stocks of Teak Stands at Different Ages

Geostatistical Modelling of Below- And Aboveground Carbon Stocks of Teak Stands at Different Ages

MORPHOLOGICAL ANALYSIS AND ACCUMULATION OF NUTRIENTS IN Peltophorum dubium (Spreng.) Taub. SEEDLINGS PRODUCED IN ORGANIC SUBSTRATES WITH DIFFERENT PROPORTIONS

IBA and melatonin increase trigonelline and caffeine during the induction and initiation of adventitious roots in Coffea arabica L. cuttings

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