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. 2014 Jul 21;14:198. doi: 10.1186/1471-2180-14-198

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Copyright © 2014 Bulgari et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Correspondence analyses of overall LH-PCR profiles. LH-PCR data statistically analysed by correspondence analyses (CA). The two axes represent the percent variation in species. Two different clusters were present in CA diagram. Healthy and diseased grapevine plants sampled in June, both coordinates positive grouped at the right of the diagram (graphically represented inside the blue circle); results of diseased plants sampled from July to October clustered around the centre of the axis (graphically represented inside the red square). Healthy, recovered and diseased grapevine plants collected from June to October are represented by green, yellow and red dots, respectively. S = healthy plants; I = diseased plants; R = recovered plants; G = June; L = July; A = August; S = September; O = October. Within the graphics, numbers represent the peak size.