Accurate and rapid technique for leaf area measurement in medlar (Mespilus germanica L.)

Accurate measurements of leaf area are important for agronomic and physiological studies. Determining the individual leaf area (A) of medlar (Mespilus germanica L.) involves measurements of leaf parameters, such as length (L) and width (W), or some combinations of these parameters. A two-year invest...

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Bibliographic Details
Published in:Advances in horticultural science 2008-01, Vol.22 (3), p.223-226
Main Authors: Mendoza-de Gyves, E., Cristofori, V., Fallovo, C., Rouphael, Y., Bignami, C.
Format: Article
Language:English
Subjects:
Calibration
Coefficients
Constant coefficients
Estimate reliability
Estimation methods
Genotypes
Leaf area
Leaves
Modeling
Plants
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Summary:Accurate measurements of leaf area are important for agronomic and physiological studies. Determining the individual leaf area (A) of medlar (Mespilus germanica L.) involves measurements of leaf parameters, such as length (L) and width (W), or some combinations of these parameters. A two-year investigation was carried out in 2005 (on seven genotypes) and in 2006 (on one cultivar) under open-fîeld conditions to test whether a model could be developed to estimate leaf area across genotypes. Regression analyses of A versus L and W revealed several models could be used for estimating the area of individual medlar leaves. A linear model having LW as the independent variable (A = 1.81 + 0.68 LW) provided the most accurate estimate (R² = 0.981, MSE = 7) of medlar leaf area. Validation of the model having LW of leaves from another genotype measured in the 2006 experiment showed that the correlation between calculated and measured areas was very high. Using the selected model, agronomists and physiologists can accurately and reliably estimate the leaf area of medlar without the use of expensive instruments.
ISSN:0394-6169
1592-1573