Effect of alternating current electric field on germination of ryegrass seed under uranium stress

doi:10.14088/j.cnki.issn0439-8114.2019.07.008

Abstract

Abstract: It is of great significance to develop phytoremediation by studying methods for promoting seed germination and plant growth of plant under uranium stress. The effect of different treatments of alternating current （AC） electric field on ryegrass（Lolium perenne L.） seed germination and seedling growth under uranium stress was studied. Results showed that, the treatment of uranium （1 mmol/L） caused significant stress on ryegrass in the period of seed germination and seedling growth（P<0.05）, and the treatments with electric field had less influence on the germination rate and germination index, but had larger influence on germination potential and vigor index of ryegrass seed under uranium stress. Besides, at high, medium and low level of electric field （1.5 V,15.0 V,150.0 V）, the treatments with electric field in 2 h showed more serious uranium stress effects on plant height, root length and biomass of ryegrass seedling, however, except the high level of electric field in 24 h, the treatments with electric field in 12 h and 24 h could significantly relieve the effects of uranium stress. With the appropriate electric field strength and treat-time, there may have little effect on the seed germination indicators of ryegrass seed under uranium stress, but it can promote the uranium resistance of seedlings.

Key words: ryegrass（Lolium perenne L.）, uranium stress, alternating current （AC） electric field, seed germination

CLC Number:

S543⁺.6

YANG Tian, HUANG Lin-tao, XIONG Yao, YAO Ming-yu, CHENG Xin-yan, CHEN Ke. Effect of alternating current electric field on germination of ryegrass seed under uranium stress[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(7): 35-38.

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