Effects of five kinds of heavy metal stress on seed germination and seedling growth of Trifolium repens and T. pratense were studied by germination test, aimed to provide a reference for the study of the applications of Trifolium in heavy metal contaminated soil. The results showed that Haifa (a cultivar of T. repens)and T. pratense had better tolerance to Cd2+ and Mn2+, than to Pb2+, Cu2+ and Zn2+.They had over 80% germination rate under the III grade standard concentration of Cd2+ or under 800 mg稬-1 Mn2+, and the seedlings still maintained good vitality. High concentration of heavy metal ions stress had significant inhibition on the growth of embryo and hypocotyl, and T. pratense had better germination rate than Haifa. These two species of Trifolium could be applied for Cd-Mn contaminated soil restoration.
SONG Feng-ming
,
LIU Jian-hua
,
WU Cai-qiong
,
LEI Jiang-li
,
XU Yi-yan
. Effects of Five Kinds of Heavy Metal Stress on Seed Germination and Seedling Growth of Trifolium repens and T. pratense[J]. Subtropical Plant Science, 2014
, 43(04)
: 276
-280
.
DOI: Doi: 10.3969/j.issn.1009-7791.2014.04.002
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