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. 2021 Mar 28;12(4):494. doi: 10.3390/genes12040494

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Clustering of the 34 potato varieties based on the genetic similarity obtained by SSR analyses and selection with SSR markers. (a) UPGMA dendrogram of the 34 potato varieties (1t = most drought tolerant, 34t = most sensitive) based on all 75 SSR primer combinations derived from candidate genes for drought tolerance, Mantel coefficient r = 0.62; (b) Selection by applying four SSR markers associated with drought sensitivity. Black box= band is present, grey box= band is absent. The varieties are ordered according to the UPGMA dendrogram. Boxed varieties are selected by the presence of two marker bands either in the combination HRO_ACS3_D and HRO_PP2C_1_B or the combination HRO_ALDH_H and HRO-ALDH_N. Black Arrow head = falsely negative selected; Grey arrow head = falsely positive selected.