Contour determination and shape characteristics of different varieties of potato tubers
Precise determination of potato tubers’ shape and variability existing among individual potato varieties is necessary e.g. for modeling of handling and transport processes. The procedures described in the work are used for determination and evaluation of potato tubers shape variability and proportio...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Mendel University Press
2011-01-01
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| Series: | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis |
| Subjects: | |
| Online Access: | https://acta.mendelu.cz/59/1/0009/ |
| Summary: | Precise determination of potato tubers’ shape and variability existing among individual potato varieties is necessary e.g. for modeling of handling and transport processes. The procedures described in the work are used for determination and evaluation of potato tubers shape variability and proportional importance of four main principal components. Ten different potato varieties were analyzed (Karin, Karlena, Krasa, Marilyn, Princess, Red Anna, Rosara, Sazava, Vendula, and Vera) and elliptic Fourier descriptors employed for description of tubers shape. Following principal components were quantified: height to width ratio, position of the center of gravity, curvature, and degree of roundness. The scores of the resulting components were used in subsequent analysis as tuber shape characteristic. The first four principal components covered almost 100 % of the total variance in both, front and side-view shape and 97 % in top-view shape. Height to width ratio was evaluated as the determining parameter with contribution of 70.58–74.02 % of the total shape variation (front-view) for Karin and Vendula varieties respectively. The other principal components were significantly less affecting the overall variability. It was confirmed that described approach is precise and usable procedure for potato tubers shape analysis. |
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| ISSN: | 1211-8516 2464-8310 |