We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
卤代阻燃剂和镉对旱稻种子萌发和生长的影响.
- Authors
江秀兰; 谢慧; 常晓云
- Abstract
The study investigated the effects of halogenated flame retardants[tetrabromobisphenol A(TBBPA)and dechlorane plus(DP)]and cadmium(Cd)on the germination and seedling growth of rice. A seed germination test was conducted using the soil application method with the seeds of No.3 Yuanhan rice. DP, TBBPA, and Cd inhibited the germination and seedling growth of rice, and there was a significant dose-effect relationship. The EC50(concentration for 50% of maximal effect)of DP, TBBPA, and Cd for root elongation was 250.40, 124.75 mg·kg-1, and 133.41 mg·kg-1, respectively, and that for shoot elongation was 645 265.53, 244.52 mg·kg-1, and 81.80 mg·kg-1, respectively.Halogenated flame retardants and Cd enhanced the root activity of rice. Compared with that in the control, the proline content in seedlings treated with TBBPA, DP, Cd, and combination of pollutants was increased by 51.03%, 4.91%, 42.52% and 86.35% compared with the control, respectively. The soluble protein content in rice seedlings treated with TBBPA and DP was increased by 36.55% and 5.86% compared with the control, respectively. Furthermore, the formation of soluble proteins in rice seedlings treated with Cd and combination of pollutants was inhibited by 28.86% and 15.09%, respectively. The soluble sugar content in rice seedlings was reduced(8.41%)by Cd, but increased by the flame retardants and combination of pollutants compared with the control. The seedlings of No. 3 Yuanhan rice accumulated Cd to a certain level, whereas the residual level of the two flame retardants was very low in the seedlings. The results indicated that DP, TBBPA,and Cd could inhibit the germination and seedling growth of No. 3 Yuanhan rice, and that the seedlings improve tolerance to pollutant stress by regulating the content of proline, soluble sugars, and soluble proteins in cells.
- Subjects
FIREPROOFING agents; RICE proteins; SUGAR; POLLUTANTS; RICE
- Publication
Journal of Agro-Environment Science, 2020, Vol 39, Issue 7, p1460
- ISSN
1672-2043
- Publication type
Article
- DOI
10.11654/jaes.2020-0023