Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities
文献类型: 外文期刊
作者: Pengjie Hu ; Zhu Li ; Cheng Yuan ; Younan Ouyang ; Liqiang Zhou ; Jiexue Huang ; Yujuan Huang ; Yongming Luo ; Peter Christie ; Longhua Wu *
作者机构:
关键词: Arsenic;Cadmium;Growth stages;Rice;Water management
期刊名称: Journal of Soils and Sediments
ISSN: 1439-0108
年卷期: 2013 年 13 卷 5 期
页码:
收录情况: JCR(2021版)
摘要: Water management affects the bioavailability of cadmium (Cd) and arsenic (As) in the soil and hence their accumulation in rice grains and grain yields. However, Cd and As show opposite responses to soil water content, but information, particularly on irrigation, is missing on a field scale. The purpose of the present study was therefore to find a water management regime that can lower accumulation of both Cd and As in grain without yield loss. Two rice (Oryza sativa L.) cultivars, A16 and A159, with different grain Cd accumulation capacities were employed in field plot experiments with four water management regimes comprising aerobic, intermittent, conventional practice and flooded. The dynamics of Cd and As bioavailability in the soil and Cd and As concentrations in roots, straw and grains were determined at the early tillering, full tillering, panicle initiation, filling and maturity stages of crop growth. The lower water content regimes (aerobic and intermittent) mostly led to higher soil HCl-extractable Cd than the higher soil water content regimes (conventional and flooded). HCl-extractable As in contrast was favoured by the higher soil water content treatments. Conventional and flooded irrigation accordingly gave higher plant As concentrations but lower Cd compared to aerobic and intermittent irrigation. Cd concentrations in roots and straw of both varieties increased with growth stage, especially in aerobic and intermittent regimes, while As concentrations in plants showed little change or a slight decrease. As the water irrigation volume increased from aerobic to flooded, brown rice Cd decreased from 1.15 to 0.02 mg kg(-1) in cultivar A16 and from 1.60 to 0.05 mg kg(-1) in cultivar A159, whereas brown rice As increased. Aerobic and flooded treatments produced approximately 10-20 % lower grain yields than intermittent and conventional treatments. Cultivars with low Cd accumulation capacity show higher brown rice grain As than those with high Cd uptake capacity. Of the four water management regimes, the conventional irrigation method (flooding maintained until full tillering followed by intermittent irrigation) ensured high yield with low Cd and As in the brown rice and so remains the recommended irrigation regime.
分类号:
- 相关文献
作者其他论文 更多>>
-
Rapid Creation of New Photoperiod-/Thermo-Sensitive Genic Male-Sterile Rice Materials by CRISPR/Cas9 System
作者:SHEN Lan ; DONG Guojun +; ZHANG Yu ; HU Guocheng ; ZHANG Qiang ; HU Guanglian ; XU Bo ; REN Deyong ; HU Jiang ; ZHU Li ; GAO Zhenyu ; ZHANG Guangheng ; GUO Longbiao ; ZENG Dali ; QIAN Qian *
关键词:
-
Geographical variation in arsenic, cadmium, and lead of soils and rice in the major rice producing regions of China
作者:Tingting Mu ; Tuozheng Wu ; Tong Zhou ; Zhu Li ; Younan Ouyang ; Jinping Jiang ; Dong Zhu ; Jinyu Hou ; Zhaoyang Wang ; Yongming Luo ; Peter Christie ; Longhua Wu *
关键词:
-
Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar
作者:Pengjie Hu ; Younan Ouyang ; Longhua Wu *; Libo Shen ; Yongming Luo ; Peter Christie
关键词:
-
Genetic Analysis and QTL Mapping of Mature Seed Culturability in Indica Rice
作者:TIAN Fu-kuan ; RUAN Ban-pu +; YAN Mei-xian ; YE Shi-fang ; PENG You-lin ; DONG Guo-jun ; ZHU Li ; HU Jiang ; YAN Hong-lan ; GUO Long-biao ; QIAN Qian *; GAO Zhen-yu *
关键词:
-
The influence of pH and organic matter content in paddy soil on heavy metal availability and their uptake by rice plants
作者:Fanrong Zeng ; Shafaqat Ali ; Haitao Zhang ; Younan Ouyang ; Boyin Qiu ; Feibo Wu ; Guoping Zhang *
关键词: