籽粒镉积累不同的小麦在不同镉环境下籽粒养分特性  

Grain Nutrient Characteristics of Different Grain Cadmium Accumulation Wheat Under Different Cadmium Environments

作　　者：杨玉敏[1,2] 万洪深 叶美金 胡文[1] 肖春 杨凡 何娟 雷建容 杨晶 陈春秀[1] 李俊 杨恩年[1,2] 杨武云 YANG Yumin;WAN Hongshen;YE Meijin;HU Wen;XIAO Chun;YANG Fan;HE Juan;LEI Jianrong;YANG Jing;CHEN Chunxiu;LI Jun;YANG Ennian;YANG Wuyun(Institute of Agricultural Resources and Environment,Sichuan Academy of Agricultural Science,Chengdu 610066,China;Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China,Ministry of Agriculture and Rural Areas,Chengdu 610066,China;Crop Research Institute,Sichuan Academy of Agricultural Science,Chengdu 610066,China;Environment-Friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province,Chengdu 610066,China;College of Chemistry and Life Sciences,Chengdu Normal University,Chengdu 611130,China;Biotechnology and Nuclear Technology Research Institute,Sichuan Academy of Agricultural Science,Chengdu 610066,China)

机构地区：[1]四川省农业科学院农业资源与环境研究所,成都610066 [2]农业农村部西南地区小麦生物学与遗传育种重点实验室,成都610066 [3]四川省农业科学院作物研究所,成都610066 [4]粮油作物绿色种质创新与遗传改良四川省重点实验室,成都610066 [5]成都师范学院化学与生命科学学院,成都611130 [6]四川省农业科学院生物技术核技术研究所,成都610066

出　　处：《四川农业大学学报》2024年第4期762-770,799,共10页Journal of Sichuan Agricultural University

基　　金：四川省自然科学基金(2024NSFSC0336);农业种质资源普查项目(SAAS-NYZZZYPC-2023-003)。

摘　　要：【目的】明确籽粒镉(Cd)积累不同的小麦在不同Cd土壤中籽粒Cd及其他养分的特性,筛选籽粒Cd低积累、有益养分高积累材料。【方法】通过盆栽试验研究5份小麦籽粒Cd高积累和5份籽粒Cd低积累材料在不同Cd土壤中小麦籽粒中主要营养元素、有益中微量元素含量。【结果】籽粒Cd含量与土壤中Cd含量呈极显著正相关。籽粒Cd低积累小麦在不同Cd土壤中籽粒Cd迁移系数较低,籽粒Cd高积累小麦从土壤中吸收Cd转运至籽粒的效率较高。籽粒Cd低积累小麦中籽粒N、P、K、Cu和Mn含量随土壤Cd浓度的升高而降低,Ca、Fe含量随着土壤Cd浓度的升高而上升,Mg、Zn含量变化受土壤Cd含量影响不明显;高Cd积累小麦籽粒P、K、Ca、Mg、Zn和Fe含量随土壤Cd浓度提高而升高,籽粒Cu含量随土壤Cd含量的升高而降低,籽粒N、Mn含量变化不明显。【结论】籽粒Cd低积累和籽粒Cd高积累从土壤中吸收和转运Cd及其他养分到籽粒中的响应差异较大,籽粒Cd高积累小麦Cd耐受性较强,与多数中微量元素含量具协同作用,而籽粒Cd低积累小麦Cd耐受性较差,与多数中微量元素含量间表现为拮抗作用。【Objective】The aim of this study was to better understand the characteristics of beneficial nu-trients and cadmium(Cd)in wheat grains and to identify materials with grains that have low Cd content and high levels of beneficial nutrients.【Method】A pot experiment was conducted to achieve this objec-tive.The study examined the Cd content,as well as the content of main nutrient elements and beneficial microelements in the grains of ten different wheat varieties with varying Cd accumulation levels.These va-rieties were grown in four different soils with varying Cd concentrations.The varieties included five with low-Cd accumulation and five with high-Cd accumulation,respectively.【Result】The Cd content in the grains was found to be significantly and positively correlated with the soil Cd content.The low-Cd accu-mulation wheat varieties exhibited a lower Cd migration coefficient across the four different Cd soils,while the high-Cd accumulation ones demonstrated higher Cd absorption and transport efficiency from the soil to the grain.As soil Cd content increased,the content of N,P,K,Cu and Mn in the grains of low-Cd accumulation wheat decreased,while their Ca and Fe content increased,and their Mg and Zn content did not change significantly.Conversely,in high-Cd accumulation wheat,the content of P,K,Ca,Mg and Zn in the grains increased with increasing soil Cd,the Cu content decreased,and the N and Mn content showed no significant changes.【Conclusion】The response of low-Cd and high-Cd accumula-tion wheat to the absorption and transport of Cd and other beneficial nutrients from the soil to the grain was significantly different across the four different Cd soils.High-Cd accumulation wheat showed strong Cd tolerance,which was synergistic with most major and trace elements.In contrast,low-Cd accumulation wheat exhibited poor Cd tolerance and was antagonistic with most elements.

关 键 词：CD 大量元素 中微量元素 小麦 籽粒Cd积累 

分 类 号：X173[环境科学与工程—环境科学] S512.1[农业科学—作物学]