Leaf area estimation in muskmelon by allometry

Misle, E.; Kahlaoui, B.; Hachicha, Mohamed; Alvarado, Pablo

doi:10.1007/s11099-013-0062-x

Cited by 11 publications

(9 citation statements)

References 37 publications

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“…elongating L concurrently progressed with widening W. This concurrent two-dimensional growth retains leaves at a relatively fixed shape (Misle et al, 2013). In case of our studied chili pepper, the leaf shape is lanceolate regardless of their sizes.…”

Section: Selection For the Most Reliable La Estimation Modelmentioning

confidence: 70%

Relative leaf expansion rate and other leaf-related indicators for detection of drought stress in chili pepper (Capsicum annuum L.).

Widuri¹,

Lakitan²,

Hasmeda³

et al. 2017

Aust J Crop Sci

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Leaf is a sensitive plant organ in responding to abiotic stresses, especially drought stress. Objective of this research was to evaluate changes of relative leaf expansion rate (RLER) and other leaf-related indicators as affected by gradual drought stress. The stress was induced by withholding water supply to chili pepper (Capsicum annum L.) for up to 12 days. Afterward, the crops were allowed to recover. The research was conducted in two stages. The first stage was for finding a reliable leaf area (LA) estimation model. The second stage was for evaluating relevance of RLER, specific leaf fresh weight (SLFW), specific leaf water content (SLWC), and total leaf area (TLA) as indicators for drought stress in chili pepper. Combinations of five regression models (linear, zero-intercept linear, quadratic, zero-intercept quadratic, and power) and three predictors, i.e. leaf length (L), leaf width (W), and LW were evaluated as candidates of LA estimation model. Selection of the models was based on coefficient of determination (R 2 ) and geometrical principles. The selected model was used for calculating RLER, SLFW, SLWC and TLA. Results of this study indicated that dynamic changes of RLER were mainly driven by daily day-night cycle rather than long-term gradual drought stress. SLFW and SLWC did not significantly decrease during drought stress period. However, drought stress significantly inhibited TLA in chili pepper. Chili pepper was able to recover from short-term (4 days) exposure to drought stress; yet, this crop was unable to recover after 8 days exposure to drought stress or longer.

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Section: Selection For the Most Reliable La Estimation Modelmentioning

confidence: 70%

Relative leaf expansion rate and other leaf-related indicators for detection of drought stress in chili pepper (Capsicum annuum L.).

Widuri¹,

Lakitan²,

Hasmeda³

et al. 2017

Aust J Crop Sci

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“…Many abiotic factors, such as temperature, moisture, light, and soil properties have the potential to affect allometric relationships among plant traits ( Misle et al, 2013 ; Jorquera-Fontena et al, 2017 ). In this study, leaf area correlated positively (leaf length, width, and perimeter) or negatively (leaf length:width ratio) with other leaf morphological traits, and the slopes of all these relationships were significantly different from |1.00|.…”

Section: Discussionmentioning

confidence: 99%

Altitudinal Patterns of Leaf Traits and Leaf Allometry in Bamboo Pleioblastus amarus

Guo

Lin²,

Chen

et al. 2018

Front. Plant Sci.

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Awareness of local-scale variation in leaf traits for a single species and the relationships between these traits and their dependence on altitude might be essential for extrapolating ecophysiological processes from the leaf to the ecosystem level. While altitudinal patterns of leaf traits have been extensively studied in a number of species, little is known about such patterns in bamboos. We analyzed leaf functional traits and leaf allometric relationships of Pleioblastus amarus at three different altitudes (200, 400, and 800 m). With increasing altitude, most functional traits, including leaf length, width, perimeter, area, dry weight, and water content, decreased significantly, while the leaf length:width ratio exhibited a marked increase, resulting in a tendency toward narrow leaves. Specific leaf area first increased, and then decreased, while the change in leaf dry matter content showed the opposite trend. Leaf area was positively correlated with leaf length, leaf width and leaf perimeter, but negatively correlated with the leaf length:width ratio. With increasing altitude, the slopes of these relationships for leaf area first increased, and then decreased. Leaf biomass was positively correlated with leaf length, width, perimeter, and area, with the slopes of the relationships being the same at all altitudes. Thus, the leaves of this bamboo species at middle altitude have the highest specific leaf area and lowest leaf dry matter content. Our findings suggest that this bamboo species has a big potential of growth and morphological plasticity.

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“…There are several published studies of nondestructive estimations of LA involving measurements of leaf dimensions as independent variables, but using different regression models, including power (Kandiannan et al, 2002;Antunes et al, 2008;Pompelli et al, 2012;Wang and Zhang, 2012;Misle et al, 2013) and second-order polynomial models (Mazzini et al, 2010). In our study, we adopted the use of linear regression models because they are simpler and provide good estimates for a great number of plant species with different leaf areas and leaf shapes when compared with non-linear regression models (Cristofori et al, 2007;Mazzini et al, 2010;Rouphael et al, 2010;Wang and Zhang, 2012;Souza and Habermann, 2014).…”

Section: Discussionmentioning

confidence: 99%

Regression models for estimating leaf area of seedlings and adult individuals of Neotropical rainforest tree species

et al. 2016

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Individual leaf area (LA) is a key variable in studies of tree ecophysiology because it directly influences light interception, photosynthesis and evapotranspiration of adult trees and seedlings. We analyzed the leaf dimensions (length -L and width -W) of seedlings and adults of seven Neotropical rainforest tree species (Brosimum rubescens, Manilkara maxima, Pouteria caimito, Pouteria torta, Psidium cattleyanum, Symphonia globulifera and Tabebuia stenocalyx) with the objective to test the feasibility of single regression models to estimate LA of both adults and seedlings. In southern Bahia, Brazil, a first set of data was collected between March and October 2012. From the seven species analyzed, only two (P. cattleyanum and T. stenocalyx) had very similar relationships between LW and LA in both ontogenetic stages. For these two species, a second set of data was collected in August 2014, in order to validate the single models encompassing adult and seedlings. Our results show the possibility of development of models for predicting individual leaf area encompassing different ontogenetic stages for tropical tree species. The development of these models was more dependent on the species than the differences in leaf size between seedlings and adults.Keywords: leaf allometry, leaf size, leaf shape, ontogenetic stage, tree growth. Modelos de regressão para estimativa da área foliar de indivíduos jovens e adultos de espécies arbóreas de floresta neotropical ResumoÁrea foliar individual (AF) é uma variável chave em estudos sobre a ecofisiologia de arbóreas, porque influencia diretamente a interceptação de luz, a fotossíntese e a evapotranspiração das árvores adultas e das mudas. Foram analisadas as dimensões foliares (comprimento -C e largura -L) de indivíduos adultos e de mudas de sete espécies arbóreas de florestas neotropicais (Brosimum rubescens, Manilkara maxima, Pouteria caimito, Pouteria torta, Psidium cattleyanum, Symphonia globulifera e Tabebuia stenocalyx), com o objetivo de testar a viabilidade de modelos de regressão linear para estimar a AF de indivíduos adultos e mudas. No sul da Bahia, Brasil, um primeiro conjunto de dados foi coletado entre março e outubro de 2012. A partir das sete espécies analisadas, apenas duas (P. cattleyanum e T. stenocalyx) apresentaram relações muito semelhantes entre e AF e CL, em ambos os estádios ontogenéticos. Para estas duas espécies, um segundo conjunto de dados foi coletado em agosto de 2014, a fim de validar os modelos únicos que englobam folhas de indivíduos adultos e mudas. Nossos resultados mostram a possibilidade de desenvolvimento de modelos para a predição da área foliar, abrangendo diferentes estádios ontogenéticos para espécies arbóreas tropicais. O desenvolvimento destes modelos foi mais dependente das espécies do que das diferenças entre o tamanho das folhas de mudas e de indivíduos adultos.Palavras-chave: alometria foliar, tamanho da folha, formato da folha, estádio ontogenético, crescimento arbóreo.

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Leaf area estimation in muskmelon by allometry

Cited by 11 publications

References 37 publications

Relative leaf expansion rate and other leaf-related indicators for detection of drought stress in chili pepper (Capsicum annuum L.).

Relative leaf expansion rate and other leaf-related indicators for detection of drought stress in chili pepper (Capsicum annuum L.).

Altitudinal Patterns of Leaf Traits and Leaf Allometry in Bamboo Pleioblastus amarus

Regression models for estimating leaf area of seedlings and adult individuals of Neotropical rainforest tree species

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