Overexpression of CaAPX Induces Orchestrated Reactive Oxygen Scavenging and Enhances Cold and Heat Tolerances in Tobacco

Figure 8

Germination rates of T1 generation seeds under temperature stress. (a) The state of seeds germination under 25°C. (b) The state of seeds germination under 4°C. (c) The state of seeds germination under 38°C. (d) Rate of seeds germination of T1 generation transgenic and WT seeds under different temperature treatments. L1, L2, and L3: 3 lines of CaAPX transgenic tobacco; WT: wild type. Different lowercase letters represent significant differences among the CaAPX transgenic and WT plants, whereas different capital letters represent significant differences among the stress treatments, at a confidence level of 0.05. The data are the means of four replicates and were compared by Duncan’s multiple range tests.

(a)

(b)

(c)

(d)