Determinação da área foliar de Passiflora mucronata a partir de dimensões lineares do limbo foliar

Schmildt, Edílson Romais; Oliari, Layane Segantini; Schmildt, Omar; Alexandre, Rodrigo Sobreira; Pires, Fábio Ribeiro

doi:10.18227/1982-8470ragro.v10i4.3720

Cited by 8 publications

(10 citation statements)

References 12 publications

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“…Uma das primeiras respostas da planta ao déficit hídrico é a redução na área foliar (TAIZ; ZEIGER, 2009). Assim, tal variável é considerada por diversos autores um importante parâmetro do desenvolvimento vegetal (MORAES et al, 2013;NOMURA et al, 2009;SCHMILDT et al, 2016).…”

Section: Resultsunclassified

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Campos

Bomfim

Carvalho

et al. 2019

R_I

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ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO ARLENE SANTISTEBAN CAMPOS1; GUILHERME VIEIRA DO BOMFIM2; ANA CRISTINA PORTUGAL PINTO DE CARVALHO3; BENITO MOREIRA DE AZEVEDO2; ANA CECÍLIA RIBEIRO DE CASTRO3 E DENISE VIEIRA VASCONCELOS4 1Departamento de ciência do solo, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, arlenesan@yahoo.com.br. 2Departamento de engenharia agrícola, Universidade Federal do Ceará, Av. Mister Hull, 2977, Campus do Pici, CEP: 60356-001, Fortaleza, Ceará, Brasil, guile2007@gmail.com, benito@ufc.br. 3Embrapa Agroindústria Tropical, Rua Pernambuco, 2270, Pici, CEP 60511-110, Fortaleza, Ceará, Brasil, cristina.carvalho@embrapa.br, cecilia.castro@embrapa.br. 4Instituto Federal de Educação, Ciência e Tecnologia do Pará, Estrada de Ferro de Bragança, s/nº, Taíra, CEP: 68600-000, Bragança, Pará, Brasil, denisevasconcelos@hotmail.com. 1 RESUMO O objetivo deste trabalho foi avaliar a influência de diferentes lâminas de irrigação na aclimatização de mudas micropropagadas de Anthurium maricense. O delineamento experimental foi o completamente ao acaso, composto por cinco tratamentos e quatro repetições de quatro mudas cada. Os tratamentos foram as lâminas de irrigação estimadas com cinco percentuais da capacidade de retenção de água (CRA) do substrato: 50; 75; 100; 125; e 150% da CRA. As mudas foram cultivadas individualmente em vasos de 415 mL contendo o substrato comercial HS Flores®. Durante a aclimatização, as mudas foram irrigadas duas vezes ao dia e receberam adubações foliares em dias alternados. Foram analisadas as variáveis: incremento na altura da muda (IAM); incremento no número de folhas por muda (INF); incremento na área da maior folha (IAMF); ocupação de vaso (OV); taxa de fotossíntese líquida (A); carbono interno (Ci); e temperatura (Ti) e umidade (Ui) foliar. Com base nos resultados, supõe-se que as mudas de A. maricense possam apresentar evidência de resistência ao déficit hídrico. A lâmina de irrigação estimada com 150% da CRA proporciona o maior valor de IAMF. Lâminas de irrigação intermediárias, entre 100 e 125% da CRA, proporcionam os maiores valores de IAM, INF e OV. Palavras-chave: antúrio, plantas ornamentais, manejo da irrigação. CAMPOS, A. S.; BOMFIM, G. V. do; CARVALHO, A. C. P. P. de; AZEVEDO, B. M. de; CASTRO, A. C. R. de; VASCONCELOS, D. V. ACLIMATIZATION OF MICROPROPAGATE PLANTLETS OF Anthurium maricense WITH DIFFERENT IRRIGATION DEPHTS 2 ABSTRACT The aim of this study was to evaluate the development of micropropagated plantlets of Anthurium maricense during the acclimatization phase in screen environment, under different irrigation depths based on percentages of water retention capacity (WRC), on the weather conditions in the greenhouse environment. The experimental design was completely randomized, composed of five irrigation depths, with four replicates and four plantlets per plot. The treatments consisted of irrigation depths estimated with five levels of water retention capacity (WRC) of the substrate: 50; 75; 100; 125; and 150% of WRC. The plantlets were cultivated in 415 mL pots with HS Flowers® substrate. During the acclimatization, all plantlets were irrigated twice a day and fertilized, on alternate days, with leaf fertilization. The variables analyzed were: plant height increment (PHI); number of leaves increment (NLI); largest leaf area increment (LLAI); pot occupation (PO); net photosynthetic rate (A); internal carbon (Ci); leaf temperature (Ti) and leaf moisture (Ui). Based on the results obtained, it is assumed that A. maricense micropropagated plantlets may present evidence of resistance to water deficit. The estimated irrigation depth of 150% of WRC provides the highest value of LLAV. Intermediate irrigation depth, between 100 and 125% of the WRC, provide the highest values of PHV, NLV and PO. Keywords: anthurium, ornamental plant, irrigation management.

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Section: Resultsunclassified

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Campos

Bomfim

Carvalho

et al. 2019

R_I

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“…Models obtained with only a linear dimension have been reported as more accurate for some species as Cucumis melo L. [6], Crambe abyssinica [7] and Passiflora mucronata [11]. However, these models in most cases show tendentious estimates of leaf area, especially for small and large leaves [23].…”

Section: Ssionmentioning

confidence: 99%

“…Mathematical models for estimating leaf area have already been developed for various crops, such as Cucumis melo L. [6], Crambe abyssinica [7], Jatropha curcas [4], Passiflora spp. [8], Coffea canephora [9], Vitis vinífera L. [10], Passiflora mucronata [11], Annona cherimila Mill. [12], Crotalaria juncea [5], Litchi chinensis Sonn.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling to Estimation Leaf Area of Pimenta dioica from Linear Dimensions

Oliveira¹,

Gonçalves²,

Costa³

et al. 2019

IJPSS

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The objective of this work was to obtain regression equations and to indicate the most appropriate from different mathematical models for the estimation of the leaf area of Allspice (Pimenta dioica) by non - destructive method. 500 leaves of plants located in the municipality of São Mateus, North of Espírito Santo State, Brazil, were collected, 400 of which were used to adjust the equations and 100 for validation. The length (L) along the main midrib, the maximum width (W), the product of the length with the width (LW) and the observed leaf area (OLA) were measured from all leaves. We fitted models of linear equations of first degree, quadratic and power, where OLA was the dependent variable in function of L, W and LW. From the 100 sheets intended for validation, and using the adjusted equations for each mathematical model, the estimated leaf area (ELA) was obtained. Subsequently, a simple linear regression was fitted for each model of the proposed equation in which ELA was the dependent variable and OLA the independent variable. The mean absolute error (MAE), the root mean square error (RMSE) and Willmott's index d also determined. The best fit had as selection criterion the non-significance of the comparative means of ELA and OLA, MAE and RMSE values closer to zero and value of the coefficient of determination coefficient (R2) close to one. Thus, the power model (ELA = 0.7605(LW)0.9926, R2 = 0.9764, MAE = 1.0066, RMSE = 1.7759 and d = 0.9950) based on the product of length and width (LW) is the most appropriate for estimating the leaf area of Pimenta dioica.

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“…Among the indirect methods, the getting of mathematical equation models based on linear leaf dimensions has been reported in several studies (Peksen, 2007;Rouphael, Colla, Fanasca, & Karam, 2007;Antunes, Pompelli, Carretero, & Damatta, 2008;Toebe, Brum, Lopes, Cargnelutti Filho, & Silveira, 2010;ompelli et al, 2012;Toebe et al, 2012, Buttaro, Rouphael, Rivera, Colla, & Gonnella, 2015Santos et al, 2016;Schmildt, Oliari, Schmildt, Alexandre, & Pires, 2016;Vitória et al, 2018;Ribeiro et al, 2019;Oliveira et al, 2019), demonstrating that this technique is an important tool for evaluating the leaf area of several species.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Leaflet Area of Schinus terebinthifolius Raddi in Function of Linear Dimensions

Oliveira¹,

Covre²,

Gouvea³

et al. 2019

JAS

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The objective of this study was to select mathematical equations that best fit the estimation of the leaf area of pink pepper (Schinus terebinthifolius Raddi) from the linear leaflet dimensions. 500 leaflets with different physiological ages of a commercial plantation were collected, located in the region of Gameleira, municipality of São Mateus, North of the State of Espírito Santo, Brazil. Was measured the length (L) along the main midrib, the largest width (W) and the observed leaf area (OLA) of each sheet. The product of the multiplication between L and W of the leaflets (LW) was determined. For the modeling the measurements of 400 leaflets were used, where OLA was used in function of L, W or LW. Based on the models found, we obtained the estimated leaf area (ELA). A simple linear regression was fitted for each proposed model of OLA in function of ELA. We tested the hypotheses H0: β0 = 0 versus Ha: β0 ≠ 0 and H0: β1 = 1 versus Ha: β1 ≠ 1, using Student’s t test at 5% probability. The mean values of ELA and OLA were compared by Student’s t test 5% probability. It was determined the mean error (E), mean absolute error (MAE), root mean square error (RMSE) and Willmott d index. The best adjusted equation was chosen by linear coefficient (β0) not different from zero, angular coefficient (β1) not unlike one, non-significant values of ELA and OLA, E, EAM and RQME closer to zero and Willmott’s index d closer to one. In this way, the leaf area of leaflets of Schinus terebinthifolius Raddi can be estimated by the quadratic model equation ELA = -2.6646 + 2.2124W + 1.3953(W)2 , using only the width of the leaves as a measure.

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Determinação da área foliar de Passiflora mucronata a partir de dimensões lineares do limbo foliar

Cited by 8 publications

References 12 publications

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

ACLIMATIZAÇÃO DE MUDAS MICROPROPAGADAS DE Anthurium maricense COM DIFERENTES LÂMINAS DE IRRIGAÇÃO

Mathematical Modeling to Estimation Leaf Area of Pimenta dioica from Linear Dimensions

Determination of the Leaflet Area of Schinus terebinthifolius Raddi in Function of Linear Dimensions

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