Strong impact of thermal environment on the quantitative genetic basis of a key stress tolerance trait

摘要

Linear regressions of critical thermal minimum (CT ) across the five developmental temperatures. Each grey line represents one DGRP line (  = 166). The two full black lines represent the DGRP line with the steepest slope and the DGRP line with the flattest slope, with the difference in CT from developing at 17–29 °C indicated as ΔCT . The two dashed black lines represent the DGRP lines with the highest and lowest average CT across the temperatures indicated as . These latter two DGRP lines represent a genotype that performs poorly across environments and a genotype that performs well across environments