Fig. 2From: Natural variation in tolerance to sub-zero temperatures among populations of Arabidopsis lyrata ssp. petraeaPercent survival of Arabidopsis lyrata ssp. petraea from separate populations, 14 days after exposure to sub-zero temperatures. Plants were exposed to 2 °C for 2 days prior to exposure to sub-zero temperatures. n = 90 to 96 apart from 20 °C where n = 24. Curve represents mean survival of all populations. LT50 values are presented in Table 1Back to article page