caa a22 4500 605480656 CHVBK 20210128100416.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11099-015-0117-2 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0117-2 Simple and accurate allometric model for leaf area estimation in Vitis vinifera L. genotypes [Elektronische Daten] [D. Buttaro, Y. Rouphael, C. Rivera, G. Colla, M. Gonnella] The aim of the present experiment was to evaluate the currently used allometric models for Vitis vinifera L., as well as to develop a simple and accurate model using linear measurements [leaf length (L) and leaf width (W)], for estimating the individual leaf area (LA) of nine grapevine genotypes. For model construction, a total of 1,630 leaves coming from eight genotypes in 2010 was sampled during different leaf developmental stages and encompassed the full spectrum of leaf sizes. The model with single measurement of L could be considered an interesting option because it requires measurement of only one variable, but at the expense of accuracy. To find a model to estimate individual LA accurately for grapevine plants of all genotypes, both measurements of L and W should be involved. The proposed linear model [LA = −0.465 + 0.914 (L × W)] was adopted for its accuracy: the highest coefficient of determination (> 0.98), the smallest mean square error, the smallest prediction sum of squares, and the reasonably close prediction sum of squares value to error sum of squares. To validate the LW model, an independent data set of 200 leaves coming from another genotype in 2011 was used. Correlation coefficients showed that there was a highly reliable relationships between predicted leaf area and the observed leaf area, giving an overestimation of 0.8% in the prediction. The Institute of Experimental Botany, 2015 estimation model nationallicence linear regression nationallicence nondestructive method nationallicence GLM : general linear model nationallicence L : leaf midvein length nationallicence LA : individual leaf area nationallicence LW : product leaf length and width nationallicence L:W : length to width ratio or leaf shape nationallicence MSE : mean square error nationallicence MSPR : mean squared prediction error nationallicence OLA : observed leaf area nationallicence PLA : predicted leaf area nationallicence PRESS : prediction sum of squares nationallicence r 2 : coefficient of determination nationallicence SE : standard errors nationallicence SSE : error sum of squares nationallicence T : tolerance values nationallicence VIF : variance inflation factor nationallicence W : maximum leaf width nationallicence Buttaro D. Institute of Sciences of Food Production (CNR-ISPA), Via Amendola 122, 70126, Bari, Italy aut Rouphael Y. Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Italy aut Rivera C. Department of Agriculture, Forestry, Nature and Energy, University of Tuscia, Via San Camillo De Lellis snc, 01100, Viterbo, Italy aut Colla G. Department of Agriculture, Forestry, Nature and Energy, University of Tuscia, Via San Camillo De Lellis snc, 01100, Viterbo, Italy aut Gonnella M. Institute of Sciences of Food Production (CNR-ISPA), Via Amendola 122, 70126, Bari, Italy aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/3(2015-09-01), 342-348 0300-3604 53:3<342 2015 53 11099 https://doi.org/10.1007/s11099-015-0117-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11099-015-0117-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Buttaro D. Institute of Sciences of Food Production (CNR-ISPA), Via Amendola 122, 70126, Bari, Italy aut NATIONALLICENCE 700 1- Rouphael Y. Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055, Portici, Italy aut NATIONALLICENCE 700 1- Rivera C. Department of Agriculture, Forestry, Nature and Energy, University of Tuscia, Via San Camillo De Lellis snc, 01100, Viterbo, Italy aut NATIONALLICENCE 700 1- Colla G. Department of Agriculture, Forestry, Nature and Energy, University of Tuscia, Via San Camillo De Lellis snc, 01100, Viterbo, Italy aut NATIONALLICENCE 700 1- Gonnella M. Institute of Sciences of Food Production (CNR-ISPA), Via Amendola 122, 70126, Bari, Italy aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/3(2015-09-01), 342-348 0300-3604 53:3<342 2015 53 11099