NDLI: Allometric Individual Leaf Area Estimation in Chrysanthemum

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Allometric Individual Leaf Area Estimation in Chrysanthemum

Content Provider	MDPI
Author	Fanourakis, Dimitrios Kazakos, Filippos Nektarios, Panayiotis
Copyright Year	2021
Description	A model for estimating the area of individual leaves (LA) by employing their dimensions was developed for chrysanthemum. Further hypotheses were tested: (a) LA estimation is improved by considering blade length (Lb) rather than leaf length (L), and (b) a reasonable LA estimation can be attainable by considering L in conjunction to a shape trait, which is cultivar dependent. For the model development, six cultivars were employed (1500 leaves in total), while for model validation, an independent set of nine cultivars was utilized (1125 leaves in total). Several characteristics were digitally assessed in fully expanded leaves which included petiole length, leaf L, width (W), perimeter, shape traits (aspect ratio, circularity, roundness, solidity), together with LA. LA estimation was more accurate by considering both L and W, as compared to a single dimension. A linear model, employing the product of L by W as independent variable, provided the most accurate LA estimation (R2 = 0.84). The model validation indicated a highly significant correlation between computed and measured LA (R2 = 0.88). Replacing L by Lb reasonably predicted LA (R2 = 0.832) but at some expense of accuracy. Contrary to expectation, considering L (or W) and a cultivar-specific shape trait generally led to poor LA estimations.
Starting Page	795
e-ISSN	20734395
DOI	10.3390/agronomy11040795
Journal	Agronomy
Issue Number	4
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-04-18
Access Restriction	Open
Subject Keyword	Agronomy Horticulture Chrysanthemum Morifolium Leaf Blade Leaf Length Leaf Shape Leaf Width Non-destructive Methods Petiole
Content Type	Text
Resource Type	Article

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