In contrast, the seedlings cultured in the media with EGTA or TFP, which inhibited the activity of calcium or calmodulin, had lower growth speed, the twig was also badly died back.

• 而EGTA、TFP处理的试管苗，生长受到明显抑制，顶端自枯现象严重，但TFP处理的试管苗能促进根的生长。