Figure 3.

Viability staining showing cngc16 mutants are hypersensitive to stress. Viability was assayed using Alexander’s reagent. Pollen were harvested from plants growing under conditions of hot days and cold nights (see Figure 1B). Values represent means ± sd of three independent experiments (n = 50–100 pollen grains for each experiment). Student’s t test was done to compare the pollen viability of cngc16 mutants with wild-type (wt) plants grown under a hot and cold stress regime. **Student’s t test significant at P < 0.01.