GONG Yulian,ZENG Bijian,XIE Jie,et al.Effects of Intraspecific Intercropping of Selected Cultivars onShoot Cadmium Accumulation in Four Leaf Vegetables[J].Northern Horticulture,2023,(12):23-28.[doi:10.11937/bfyy.20224330]
四种叶菜典型品种间作对镉积累的影响
- Title:
- Effects of Intraspecific Intercropping of Selected Cultivars onShoot Cadmium Accumulation in Four Leaf Vegetables
- Keywords:
- leaf vegetables; low-Cd accumulating cultivars; high-Cd accumulating cultivars; intraspecific intercropping; Cd accumulation
- 文献标志码:
- A
- 摘要:
- 以蕹菜、菜心、小白菜和苋菜4种叶菜典型的低镉品种和高镉品种为试验材料，采用盆栽试验法，研究了低镉品种和高镉品种种内间作12个组合对镉积累的影响，以期为采用间作降低土壤源重金属污染食物链的风险、保障食品安全提供参考依据。结果表明：典型品种种内间作影响蕹菜、菜心和小白菜的生长，不同品种组合的影响存在差异。典型品种种内间作影响蕹菜、菜心和小白菜的镉积累，不同品种组合对镉积累的影响存在差异。与单作比较，间作条件下蕹菜、菜心的茎叶、根镉含量总体呈现下降趋势。种内间作影响植株对镉的吸收和镉在体内的转运过程。蕹菜、菜心均发现能降低双方茎叶镉含量的种内间作组合。
- Abstract:
- Typical low-Cd accumulating cultivars and high-Cd accumulating cultivars of 4 leaf vegetables,waterspinach (Ipomoea aquatica Forsk)，Chinese flowering cabbage (Brassica parachinensis)，pakchoi (Brassica chinensis L.)，and vegetable amaranth (Amaranthus mangostanus) were used as test materials,a pot experiment was conducted to investigate the effects of intraspecific intercropping on Cd accumulation，in order to provide reference for food safety by reducing soil heavy metal contamination risks under intercropping.The results showed that intraspecific intercropping affected the growth in the tested cultivars，and the effects of intraspecific intercropping on growth depended on the combination.Intraspecific intercropping affected Cd accumulation in the tested cultivars of water spinach，Chinese flowering cabbage and pakchoi，and the effects of different combination on Cd accumulation were different.Compared to monocropping，Cd concentrations in shoot and root under intercropping showed a declining trend in water spinach and Chinese flowering cabbage.Intraspecific intercropping changed the capacities of Cd uptake and translocation in plants.Compared to monocropping，shoot Cd concentrations in JLB+QLQ of water spinach decreased by 55.15% and 40.93%，respectively；T308+QLQ of water spinach decreased by 54.97% and 36.05%，respectively；shoot Cd concentrations in 49CX+CLW of Chinese flowering cabbage decreased by 29.21% and 70.59%，respectively；shoot Cd concentrations in 49CX+CX4 of Chinese flowering cabbage decreased by 42.97% and 72.51%，respectively.The combinations which could reducing shoot Cd accumulation in water spinach and Chinese flowering cabbage were observed.
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备注/Memo
第一作者简介：龚玉莲（1974-），女，博士，教授，现主要从事污染生态学等研究工作。E-mail：gongyulian@gdei.edu.cn.基金项目：广东省自然科学基金资助项目（2017A030313191）；2019年度广东省高等教育教学改革资助项目；广东省教育厅“创新强校工程”普通高校特色创新类资助项目（2018KTSCX159）；广东第二师范学院大学生创新训练资助项目（202214278106，202214278112）。收稿日期：2022-10-25