UTILIZAÇÃO DE MODELOS ALOMÉTRICOS PARA ESTIMAR A ÁREA FOLIAR DE Talinum triangulare E Talinum paniculatum

Oliveira, Ricardo Ferreira; Jakelaitis, Adriano; Alexandre, Ellen Carla Francisca; Pereira, Leandro Spíndola; Silva, Márcia Nara da; Oliveira, Daniel Emanuel Cabral de; Sousa, Gustavo Dorneles de; Oliveira, Gustavo Silva

doi:10.21206/rbas.v9i1.3861

Cited by 2 publications

(3 citation statements)

References 22 publications

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“…The significant results associated with the high coefficients of determination indicate that the fitted models can be used to estimate the leaflet area of M. oleifera, and the model that relates the product between leaflet length and width is the most indicated for this purpose. These results are consistent with those obtained by Morgado et al (2013) in species of passion fruit (Passiflora alata, P. coccinea, P. gibertii, P. ligularis, P. misera, P. mucronata, P. nitida, P. setacea), by Wang et al (2019) in broadleaf species, by Oliveira et al (2019) in 'caruru' (Talinum triangulare) and 'beldroega grande' (Talinum paniculatum), by Hara et al (2019) in common beans (Phaseolus vulgaris) and by Teobaldelli et al (2020b) when fitting allometric models in the estimation of the leaf area of Ocimum basilicum L., Mentha Spp., and Salvia Spp. When the precision of the model was evaluated through Pearson's correlation coefficient "r", it was possible to note that the models ELA = β 0 + β 1 *LW and ELA = β 0 + β 1 *L + β 2 *W had the best performance, with values higher than 0.98.…”

Section: Resultssupporting

confidence: 91%

Allometric models for estimating Moringa oleifera leaflets area

et al. 2020

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ABSTRACT Moringa oleifera is a species of great economic, social and environmental importance, being employed for multiple purposes. Thus, the objective of this study was to fit regression models for estimating leaflets area as non-destructive method from linear measurements of leaflets of M. oleifera seedlings. The study was carried out at the Center for Agrarian and Environmental Sciences of the Paraíba State University. Three hundred leaflets of M. oleifera were collected and measured to determine length “L” and width “W” and, subsequently, leaflets area was quantified through ImageJ® software. Using 200 leaflets, the univariate regression models were fitted, adopting length, width or the product of these dimensions “LW” and a bivariate model based on length and width as predictor variables of the observed leaflets area as dependent variable. The remaining 100 leaflets were used to evaluate the relationship between the observed leaflet area “OLA” and the estimated leaflets area “ELA”, based on Pearson’s correlation “r”; Willmott’s index of agreement “d” and index of confidence “c”; and root mean square error “RMSE”. It was found that allometric models can be used with high accuracy and performance to estimate the leaflets area of M. oleifera as non-destructive method, and recommended model is ELA = 0.035 + 0.720*LW. Future research is suggested for fittings of multivariate models to estimate the leaf area of M. oleifera from varying leaflet sizes, complete leaves, leaf fresh and dry weights, history of life and age of plants.

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Section: Resultssupporting

confidence: 91%

Allometric models for estimating Moringa oleifera leaflets area

et al. 2020

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“…The relationship between the digital leaf area and length × width (Figure 4A) and the estimated and observed digital leaf area (Figure 4B) was evaluated. The coefficient of determination (R 2 ) is almost similar (0.9832 and 0.9831), suggesting that the data dispersions were minimal with the objective line, indicating that the linear model with the intercept satisfactorily describes the leaf area (Oliveira et al, 2019).…”

Section: Resultsmentioning

confidence: 90%

“…The equation ŷ = 0.63 × LW constructed from (Silva et al, 2020), Theobroma cacao (Schmildt et al, 2017), Manihot sp. (Leite et al, 2021), Erythrina velutina (Ribeiro et al, 2022), Juglans regia (Keramatlou et al, 2015), Talinum triangulare, Talinum paniculatum (Oliveira et al, 2019) and Eustoma grandiflorum (Dias et al, 2022). By estimating the leaf area using non-destructive models, it is possible to explain plants' agronomic and physiological behavior concerning the availability of radiation and water (Salazar et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Leaf area estimation of Congea tomentosa using a non-destructive method

Dias

Mela

Silva

et al. 2022

Rev. bras. eng. agríc. ambient.

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Congea tomentosa is a climbing plant suitable for covering arbors, railings, and fences. Leaf area determination is useful in understanding the plant-environment relationship and facilitating agronomic studies on transpiration, water requirement, light interception, and photosynthetic activity. The objective of this study was to obtain an allometric equation to estimate the leaf area of C. tomentosa by measuring the leaf dimensions. Analyses were performed on 200 leaves of different shapes and sizes from 10 randomly chosen adult plants grown under field conditions. The leaf length, leaf width, product length and width, and leaf area were determined. Linear, linear without intercept, quadratic, cubic, power, and exponential regression models were used to estimate the leaf area. The coefficient of determination, Willmott’s concordance index, Akaike information criterion, root mean square error and BIAS index were used to determine the best model. The leaf area of C. tomentosa can be satisfactorily estimated using a non-destructive method that uses measurements of leaf dimensions. The equation ŷ = 0.63 × LW (Leaf: L = length, W = width) estimates the leaf area of C. tomentosa in a practical and fast way, with 99.15% of precision. Estimation of the leaf area of C. tomentosa using statistical models is less expensive and easily accessible to researchers and producers of this plant.

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UTILIZAÇÃO DE MODELOS ALOMÉTRICOS PARA ESTIMAR A ÁREA FOLIAR DE Talinum triangulare E Talinum paniculatum

Cited by 2 publications

References 22 publications

Allometric models for estimating Moringa oleifera leaflets area

Allometric models for estimating Moringa oleifera leaflets area

Leaf area estimation of Congea tomentosa using a non-destructive method

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