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以“日本青”大豆(Glycine max L.)种子为材料,研究了铬对大豆种子萌发的胁迫作用及水杨酸(Salicylic acid,SA)对铬胁迫的缓解效应。结果表明:在0～200 mg·L-1铬浓度范围内,随铬胁迫浓度的增加,大豆种子的发芽率、发芽指数和活力指数降低,大豆下胚轴丙二醛含量和相对电导率增加;铬胁迫显著(P<0.05)抑制大豆种子萌发的浓度为100 mg·L-1。0.05 mmol·L-1SA可缓解铬对大豆种子萌发的毒性。
The effects of chromium on the germination of soybean seeds and the alleviating effect of salicylic acid (SA) on chromium stress were studied using the seeds of Glycine Max L. as materials. The results showed that the germination percentage, germination index and vigor index of soybean seed decreased with the increase of chromium stress concentration at 0-200 mg · L-1 chromium concentration, while the malondialdehyde content and relative conductivity of soybean hypocotyls increased (P <0.05) inhibited the germination of soybean seed germination at a concentration of 100 mg · L-1.05 mmol·L-1 SA can alleviate the toxicity of chromium on soybean seed germination.