模拟酸雨对茎瘤芥种子萌发特性的影响

Effect of Simulated Acid Rain on Seed Germination of Brassica junceavar. tsatasi Mao

以茎瘤芥种子为试材,研究了不同pH的模拟酸雨对茎瘤芥种子发芽率、发芽势、发芽指数、活力指数和幼根相对电导率等生理指标特性的影响。结果表明:种子的各项发芽指标均随酸雨pH的减小呈降低趋势,根浸泡液的相对电导率则随pH的减小呈增大趋势;模拟酸雨对茎瘤芥种子发芽率的影响相对较小,但对鲜重以及活力指数影响较为明显。这说明酸雨胁迫对茎瘤芥种子萌发影响较大。

The effects of simulated acid rain with different pH on the germination rate, germination energy, germination indexes,vigor index and root-electrical conductivity of seed of Brassica juncea var. tsatasi Mao were conducted. The results showed that each physiological indexes of seed germination gradually reduced and the electrical conductivity of liquid of soaking root increased with the decrease of pH value;under the condition of simulated acid rain with different pH,seed germination rate of Brassica juncea var. tsatasi Mao was affected much less, but the fresh weight and vigor index were influenced largely. So the effect of simulated acid rain on the seed germination of Brassica juncea var. tsatasi Mao was significantly.