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. 2013 Aug 15;9(8):e1003693. doi: 10.1371/journal.pgen.1003693

Figure 1. Thermotolerance of the parent strains and segregants.

Figure 1

The diploid strain MUCL28177 was identified as a highly thermotolerant strain, showing strong growth at 41°C. One of its haploid segregants MUCL28177-21A (referred to as 21A) also showed high thermotolerance, whereas the control laboratory strain BY4742 did not grow at all at 41°C. The hybrid diploid strain 21A/BY4742 grew nearly as well at 41°C as its superior parent 21A, indicating that the major causative allele(s) in 21A is (are) dominant. The haploid segregants from 21A/BY4742 show varying growth ability (as indicated by a score from 0 to 6 for growth in the different dilutions) at 41°C, between that of the BY4742 inferior and 21A superior parents, indicating that thermotolerance is a quantitative trait.