Leaf Area Calculation Models for Vines Based on Foliar Descriptors

In the case of foliar area studies on vines, with a large number of determinations, a simple, fast, sufficiently accurate and low-cost method is very useful. The typology of leaves on the vine is complex, characterized by several descriptive parameters: median rib; secondary venations of the first a...

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Autores principales:	Florin Sala, Alin Dobrei, Mihai Valentin Herbei
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	foliar descriptors leaf area models vine leaves Botany QK1-989
Acceso en línea:	https://doaj.org/article/69025e90cc0f4287ae3503e4ce32f487
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id	oai:doaj.org-article:69025e90cc0f4287ae3503e4ce32f487
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spelling	oai:doaj.org-article:69025e90cc0f4287ae3503e4ce32f4872021-11-25T18:46:43ZLeaf Area Calculation Models for Vines Based on Foliar Descriptors10.3390/plants101124532223-7747https://doaj.org/article/69025e90cc0f4287ae3503e4ce32f4872021-11-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2453https://doaj.org/toc/2223-7747In the case of foliar area studies on vines, with a large number of determinations, a simple, fast, sufficiently accurate and low-cost method is very useful. The typology of leaves on the vine is complex, characterized by several descriptive parameters: median rib; secondary venations of the first and second order; angles between the median rib and the secondary venations; sinuses; length and width of the leaf. The present study aimed to evaluate models for calculating the leaf area based on descriptive parameters and KA (KA as the surface constant used to calculate the leaf area) for six vine cultivars, ‘Cabernet Sauvignon’ (CS), ‘Muscat Iantarnîi’ (MI), ‘Muscat Ottonel’ (MO), ‘Chasselas’ (Ch), ‘Victoria’ (Vi) and ‘Muscat Hamburg’ (MH). The determined KA surface constants had subunit values (0.91 to 0.97), except for the cultivars ‘Muscat Iantarnîi’ and ‘Muscat Ottonel’ where the surface constant KA<sub>2</sub> (in relation to the second-order secondary venations) had supraunitary values (1.07 and 1.08, respectively). The determination of the leaf area was possible under different conditions of statistical accuracy (R<sup>2</sup> = 0.477, <i>p</i> = 0.0119, up to R<sup>2</sup> = 0.988, <i>p</i> < 0.001) in relation to the variety and parametric descriptors considered. The models obtained from the regression analysis facilitated a more reliable prediction of the leaf area based on the elements on the left side of the leaf, in relation to the median rib, compared to those on the right. The accuracy of the results was checked on the basis of minimum error (ME) and confirmed by parameters R<sup>2</sup>, <i>p</i> and RMSE.Florin SalaAlin DobreiMihai Valentin HerbeiMDPI AGarticlefoliar descriptorsleaf areamodelsvine leavesBotanyQK1-989ENPlants, Vol 10, Iss 2453, p 2453 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	foliar descriptors leaf area models vine leaves Botany QK1-989
spellingShingle	foliar descriptors leaf area models vine leaves Botany QK1-989 Florin Sala Alin Dobrei Mihai Valentin Herbei Leaf Area Calculation Models for Vines Based on Foliar Descriptors
description	In the case of foliar area studies on vines, with a large number of determinations, a simple, fast, sufficiently accurate and low-cost method is very useful. The typology of leaves on the vine is complex, characterized by several descriptive parameters: median rib; secondary venations of the first and second order; angles between the median rib and the secondary venations; sinuses; length and width of the leaf. The present study aimed to evaluate models for calculating the leaf area based on descriptive parameters and KA (KA as the surface constant used to calculate the leaf area) for six vine cultivars, ‘Cabernet Sauvignon’ (CS), ‘Muscat Iantarnîi’ (MI), ‘Muscat Ottonel’ (MO), ‘Chasselas’ (Ch), ‘Victoria’ (Vi) and ‘Muscat Hamburg’ (MH). The determined KA surface constants had subunit values (0.91 to 0.97), except for the cultivars ‘Muscat Iantarnîi’ and ‘Muscat Ottonel’ where the surface constant KA<sub>2</sub> (in relation to the second-order secondary venations) had supraunitary values (1.07 and 1.08, respectively). The determination of the leaf area was possible under different conditions of statistical accuracy (R<sup>2</sup> = 0.477, <i>p</i> = 0.0119, up to R<sup>2</sup> = 0.988, <i>p</i> < 0.001) in relation to the variety and parametric descriptors considered. The models obtained from the regression analysis facilitated a more reliable prediction of the leaf area based on the elements on the left side of the leaf, in relation to the median rib, compared to those on the right. The accuracy of the results was checked on the basis of minimum error (ME) and confirmed by parameters R<sup>2</sup>, <i>p</i> and RMSE.
format	article
author	Florin Sala Alin Dobrei Mihai Valentin Herbei
author_facet	Florin Sala Alin Dobrei Mihai Valentin Herbei
author_sort	Florin Sala
title	Leaf Area Calculation Models for Vines Based on Foliar Descriptors
title_short	Leaf Area Calculation Models for Vines Based on Foliar Descriptors
title_full	Leaf Area Calculation Models for Vines Based on Foliar Descriptors
title_fullStr	Leaf Area Calculation Models for Vines Based on Foliar Descriptors
title_full_unstemmed	Leaf Area Calculation Models for Vines Based on Foliar Descriptors
title_sort	leaf area calculation models for vines based on foliar descriptors
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/69025e90cc0f4287ae3503e4ce32f487
work_keys_str_mv	AT florinsala leafareacalculationmodelsforvinesbasedonfoliardescriptors AT alindobrei leafareacalculationmodelsforvinesbasedonfoliardescriptors AT mihaivalentinherbei leafareacalculationmodelsforvinesbasedonfoliardescriptors
_version_	1718410716270034944

Leaf Area Calculation Models for Vines Based on Foliar Descriptors

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