Effects of intercropping with Vigna umbellata and Vigna radiata on cadmium accumulation of Cyphomandra betacea seedlings

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Wu, Caifang^1 ; Liu, Ji^2 ; Yang, Liu^3 ; Sun, Jing^1 ; Lin, Lijin^1

Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan

611130, China^1

Chengdu Academy of Agriculture and Forestry Sciences, Chengdu, Sichuan

611130, China^2

College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan

611130, China^3

关键词: Cadmiums (Cd);    Cd stress;    CD tolerance;    Leguminous plants;    Root-shoot ratio;    Translocation factor;    Vigna radiata;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/4/042018/pdf
DOI  :  10.1088/1755-1315/233/4/042018

来源: IOP

【 摘 要 】

This study investigated the effect of intercropping on the accumulation of cadmium (Cd) by Cyphomandra betacea seedlings that was intercropped with leguminous plants: Vigna angularis and Vigna radiatus. The result showed that: under Cd stress, intercropping with leguminous plants, biomass of C. betacea displayed a general ascending trend compared to C. betacea monoculture. Intercropping with V. umbellata, the biomass of roots, stems, leaves and shoots significantly increased respectively by 24.79%, 49.16%, 23.93% and 30.45%. Root shoot ratio decreased. However, under Cd stress, intercropping with leguminous plants substantially enhanced Cd uptake by stems and leaves of C. betacea. And translocation factor increased, the capacity of Cd translocation to shoots was improved. In conclusion, under Cd stress, intercropping with leguminous plants could increase biomass of C. betacea. Intercropping with V. umbellata increased the biomass most, and the ability of Cd tolerance of C. betacea was improved.