汞水平对苋菜种子萌发的影响

采用不同浓度的氯化汞溶液(0.5、1.0、2.5、5.0、10.0、25.0、50.0、100.0 mg/L)对不同品种苋菜种子进行浸种处理。结果表明,Hg+对苋菜种子萌发的影响在低浓度时有促进作用,随着Hg+浓度增加,苋菜种子的根长和芽长都明显减少,当Hg+浓度达到100 mg/L时,苋菜种子见萌芽,但都有红褐色痕迹,即汞污染现象非常明显;Hg+较高浓度时,各个不同品种苋菜种子导电率相对较高,种子活力相对较低。

Effects of Mercury Levels on Amaranth Seed Germination

Using mercuric chloride solution of different concentration （0.5, 1, 2.5, 5, 10, 25, 50, 100.0mg/L） on different varieties of amaranth seed soaking. The results show that, effects of Hg＋ on germination of amaranth seed has a promoting effect at low concentrations, with the increasing of Hg＋concentration, amaranth seed root length and shoot length decreased significantly, while the concentration of Hg＋ reached 100 mg/L, amaranth seeds germination but see, there are red brown traces of mercury pollution, the phenomenon is very obvious when the concentration of Hg＋is higher; the seeds of different varieties, amaranth conductive rate is relatively high, relatively low seed vigor.