Fig. 1

Physiological responses of Pinellia ternata seedlings before and after heat treatment. (A) P. ternata seedlings phenotypes in response to heat stress. Plants were grown in soil to the three-leaf stage and subjected to a 40 ℃ stress treatment for 24 h (left, scale bar = 4 cm). DAB and NBT staining from the same part of P. ternata seedlings before and after heat treatment (right, scale bar = 15 mm). (B) MDA and chlorophyll contents, and POD activities in P. ternata seedlings under control and heat treatment for 24 h. Except where noted, all data are presented as mean (n = 3) and standard deviation. Data were analyzed by Student’s t-test and one-way _ANOVA. * and ** indicate significant differences between control and heat treatment plants at the P < 0.05 and P < 0.01 levels, respectively