复合镉砷胁迫下叶菜的种子萌发及生长势差异性研究

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中图分类号φ 文献标志码φ 文章编号：1008-1038（2025）05-0054-09

DOI：10.19590/j.cnki.1008-1038.2025.05.009

Differences Study in Seed Germination and Growth Potential of Leafy Vegetables under Combined Cadmium and Arsenic Stress

CHANG Zeli'，HAN Yichen1， MENG Yuan 1，2* ， ZHANG Liang'， CHEN Jinqi'， QI Fashu'， MA Xiaoying， LIANG Mengmengl， MA Ruifan'， YANG Wenling]， YANG Wenjuan1 （1. College of Agriculture and Bioengineering， Longdong University， Qingyang 745ooo， China; 2.Gansu Key Laboratory of Conservation and Utilization of Biological Resources and Ecological Restoration in Longdong， Qingyang 7450oo， China）

Abstract： This study explored the effects of Cd/As stress on leafy vegetable seed germination and growth，to screen resistant resources.The 48 leafy vegetable varieties from eight plant families were tested.Under Cd，As，and combined Cd/As stress，germination potential，germinationrate，fresh mass，root length，and plant height were measured.Poaceae vegetables showed the highest tolerance，while Chenopodiaceae were the most sensitive. Amarylldaceae were sensitive to Cd，Amaranthaceaehad high germinationpotential，butrootlength was sensitiveto As.Tolerant varieties like Barley Seedling，Rye Seedling，Dwarf Jicai Suzhouqing，and Siji Wuban Dake Xiangyoumai had the germination and growth potential tolerance indices of3.O2 to 4.32 times higher than sensitive ones. Chuanhe Meiweiqing and Youxuan Siyueman showed Cd tolerance and As sensitivity，with Cd treatment tolerance indicesof 5.9 to 18.85and 2.11 to 29.55 times higher than As treatment.This study offeredkey insights into plant responses to heavy metal pollution and provides a reference for selecting Cd/As-tolerant plants.

Keywords： Combined cadmium and arsenic stress;leafy vegetables; seed germination;screening of pollution-resistant plant resources

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