논문 해외 국제전문학술지(SCI급) Evaluation of heavy metal phytotoxicity to Helianthus annuus L. using seedling vigor index-soil model
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-07
- 저자명 Jin Chul Joo,Xin Zhao,김재영
- 학술지명 CHEMOSPHERE
- 발행처명 PERGAMON-ELSEVIER SCIENCE LTD
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
홈페이지논문 초록 (Abstract)
A mathematical model to estimate seedling vigor index (SVI) of sunflower (Helianthus annuus L.) seeds in soils contaminated with heavy metals was developed. This model was used to quantitatively describe the complex effects of heavy metal concentrations in soils (C-s) on seed germination and seedling growth. Negative linear regressions between relative seed germination percentage (GP), root length (L-r), and shoot length (L-s) versus log C-s varied as a function of soil properties and type and concentration of heavy metals. With an increase in the heavy metal concentration in soils, the predicted SVI values decreased and reasonably described the experimental SVI values within an 80% prediction band. This demonstrates that SVI values can be predicted, a priori, using SVI-soil models. Based on the sensitivity analysis, root elongation was more significantly affected by the external environment than shoot elongation. Consequently, the SVI-soil model developed in this study can explain heavy metal phytotoxicity to sunflower in complex soil systems. Further research using a diverse range of hyperaccumulator plants and soils is required to render SVI-soil model more available for complex systems in predictions of heavy metal phytotoxicity and hyperaccumulating behaviors of hyperaccumulator plants in various soil systems. (C) 2021 Elsevier Ltd. All rights reserved.