jaue2015063: The Effects of Heavy Metal Cadmium,Lead Stress on Seed Germination and Seedlings Growth of the Trifolium repens

Abstract

By the study on the effects of the different concentrations of heavy metals Cd and Pb stress on the Trifolium repens seed germination rate, germination speed and seedling length, seedling root length, seedling dry weight .To explore the Trifolium repens seed germination and seedling growth characteristics under the heavy metal Cd and Pb stress .Designed to the Trifolium repens for further studies on heavy metal contaminated soil repair function to provide theoretical reference.The results show that there are significant effects on the Trifolium repens germination rate and germination speed under the heavy metals Cd and Pb stress. With the increase of concentration of heavy metal Cd and Pb, The inhibitory effect on the Trifolium repens seed germination rate and germination speed increased gradually. The Trifolium repens seedling length, root length, seedling dry weight dropped significantly. There are significant effects on the Trifolium repens seedling length, seedling root length and seedling dry weight under the heavy metals Cd and Pb stress. With the increase of concentration of heavy metal Cd and Pb. The inhibitory effect more obvious.