[Accumulation and Transport Characteristics of Cd, Pb, Zn, and As in Different Maize Varieties].

栽培 作物 化学 金属 重金属 农学 污染 园艺 染色体易位 植物 环境化学 生物 有机化学 基因 生物化学 生态学
作者
Renchun Yang,Jian‐Hui Xiao,Jingtian Li,Qianqian Du,Liwen Zhu,Hao Wang,Rui-Zhen Zhu,Jing Wang
出处
期刊:PubMed 卷期号:43 (8): 4232-4252 被引量:2
标识
DOI:10.13227/j.hjkx.202107117
摘要

The enrichment and translocation characteristics of Cd, Pb, Zn, and As by various parts of maize plants were investigated using field experiments in 22 maize varieties simultaneously under uncontaminated, low, middle, and serious heavy metal Cd, Pb, Zn, and As complex-contaminated farmland soil conditions. The relationship between the uptake of Cd, Pb, Zn, and As by maize plants and the morphological content of heavy metals in the soil was also discussed through principal component analysis and correlation analysis of the concentrations of eight heavy metals, including Cd, Hg, As, Pb, Cr, Cu, Ni, and Zn. The results showed that:① the distribution pattern of Cd and Zn contents in different parts of the maize plant was as follows:upper stalk>lower stalk>root>seed, the distribution pattern of Pb was As follows:root>lower stalk>upper stalk>seed, and the As distribution pattern was:root>upper stalk>lower stalk>seed. The different distribution patterns were closely related to the accumulation characteristics of the crop itself and the environmental activity of Cd, Pb, Zn, and As in the soil of the study area. ② There were significant differences in Cd and Pb accumulation among 22 maize cultivars due to their genetic background (P<0.05), which showed four trends:Cd and Pb compound high-accumulation varieties, single Cd or Pb low-accumulation varieties (low Cd and high Pb, low Pb and high Cd), and Cd and Pb compound low-accumulation varieties. Among them, the content of Cd in the grain of the three varieties exceeded the national food safety standard, and the content of Cd in the stem and leaf of 14 varieties exceeded the national food health standard. The Pb content in stems, leaves, and grains of all cultivars did not exceed the standard, but the Pb content in grains of some cultivars was close to the limit and had the risk of exceeding the standard. The content of As in the stem, leaf, and grain of different maize varieties was much lower than the standard limit value, showing a stable low-accumulation characteristic. The content of Zn in the stem and leaf of different maize varieties increased with the increase in the content of Zn in soil, but the content of Zn in grain remained within the threshold of normal plant growth. ③ Cd, Pb, Zn, and As in maize plants in the study area had a certain homology and were mainly affected by the excessive levels of Cd, Pb, Zn, and As pollutants in the soil. This showed that anthropogenic sources were brought about by mine extraction and tailings stockpiles, whereas Cu elements in maize plants were affected by certain anthropogenic pollution sources, though to a limited extent. Hg, Ni, and Cr in maize plants had a certain homology; this showed the natural source of soil parent material and weathering product accumulation. ④ The contents of Cd, Pb, Zn, and As elements in various parts of the corn plant, as well as the contents of Cr and Ni elements all had a very significant positive correlation (P<0.01). The transport mechanisms of Cd, Pb, Zn, and As elements in the plant may have a common. However, there was a synergistic effect in the migration from the root of the corn to the upper part of the ground, and the same was true for the elements of Cr and Ni. The elements of Hg and Cd, Pb, Zn, and As in the corn stems and leaves and Hg and Cd, Hg, As, Pb, Cr, Ni, and Zn in grains all showed certain antagonistic effects. ⑤ The comparison method simultaneously satisfied the following requirements:the contents of Cd, Pb, and As in stems and leaves did not exceed the national food hygiene standards, and the contents of Cd, Pb, and As in the grains did not exceed the national food safety standards. The cluster analysis of Cd, Pb, and As in grains was a low-accumulation group, and the enrichment and transport coefficients of Cd, Pb, and As in the stems and leaves and grains were low as the optimal conditions. C18 (Xianyu 335) could be selected as the optimal maize variety with low accumulation of Cd, Pb, and As and normal Zn content in grain, which is suitable for promoting and applying in the heavy metal complex-polluted farmland around industrial and mining enterprises in north China.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
斯文败类应助llwxx采纳,获得10
刚刚
刚刚
刚刚
刚刚
完美世界应助庾稀采纳,获得10
1秒前
hjb发布了新的文献求助20
1秒前
2秒前
傻傻的寄翠完成签到,获得积分10
3秒前
pluto应助Chao采纳,获得30
3秒前
Lucas应助CC采纳,获得10
3秒前
耶豆发布了新的文献求助10
3秒前
瓜子发布了新的文献求助20
3秒前
李健的小迷弟应助lanmo采纳,获得10
5秒前
keyanxiaobai发布了新的文献求助10
5秒前
可爱的函函应助LNN采纳,获得10
5秒前
ColinWine发布了新的文献求助10
5秒前
5秒前
6秒前
SciGPT应助武雨寒采纳,获得10
6秒前
8秒前
9秒前
橙子发布了新的文献求助10
10秒前
懒洋洋发布了新的文献求助20
10秒前
orixero应助徐福采纳,获得10
10秒前
小小K发布了新的文献求助10
11秒前
11秒前
12秒前
13秒前
13秒前
yeahsawyou发布了新的文献求助10
13秒前
16秒前
scsc完成签到,获得积分10
16秒前
初夏发SCI发布了新的文献求助10
17秒前
orixero应助澡雪采纳,获得10
17秒前
JamesPei应助小小K采纳,获得10
18秒前
CodeCraft应助glitter采纳,获得30
18秒前
23秒前
Ava应助大白采纳,获得10
23秒前
24秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975836
求助须知:如何正确求助?哪些是违规求助? 3520174
关于积分的说明 11201364
捐赠科研通 3256576
什么是DOI,文献DOI怎么找? 1798362
邀请新用户注册赠送积分活动 877539
科研通“疑难数据库(出版商)”最低求助积分说明 806426