Mercury is a typical toxic trace metal and its bioaccumulation in plants and subsequent entry into the food chain results in long-term health hazards in human beings. During the present investigation, the effect of mercuric chloride on seed germination, radicle length, hypocotyl length and seed respiration of two commonly consumed leguminous crops viz. Vigna radiata (mungbean) and Vigna mungo (blackgram) were studied. Considerable reduction in the percentage of seed germination, radicle length, hypocotyl length and respiratory O-2 consumption in germinating seeds was observed with the increase of concentration of mercuric chloride. The effect of mercury was found to be dependent on dose and duration of exposure besides genetic factors.
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