Combining confocal laser scanning microscope(CLSM) with pharmacology experiment, the elicitor-induced [ Ca2+]cyt d ynamics in wheat(Triticum aestivum) mesophyll protoplast were observed for further research of intracellular calcium sources. Calcium concentration of mesophyll p rotoplast in wheat cultivar ‘Lovrin 10'(resistant) showed a trend of distinctly ascend and later descend after intercellular washing fluid(IWF) treatment. Whereas in ‘Zhengzhou 5389'(susceptible), the trend was inconspicuous. Calcium ...