河北地区镉低积累型冬小麦品种筛选研究
首发时间:2024-02-29
摘要:为筛选河北产区低镉积累性冬小麦品种,以河北省主推的140份品种为供试材料,分析各品种小麦镉累积特征。本研究采用盆栽土培方法,设置外源添加镉含量(2.4 mg kg-1),通过ICP-MS技术测定苗期小麦镉含量,利用聚类分析方法筛选低镉积累型品种。结果表明,140份冬小麦生物量范围处在0.24~0.84 g之间,总体平均值为0.50 g,差异倍数为3.50,各品种镉含量总体平均值为3.22 mg kg-1,最低为1.37 mg kg-1,最高为7.30 mg kg-1,差异倍数为5.34。为筛选低镉积累型品种,各品种小麦镉含量聚类分析后共划分为4类(镉低、中低、中高以及高积累型),分类结果显示,低镉积累型品种共有16个,主要包括分支1号、藁优2018、冀麦403、衡562、金禾9123等,上述结果可作为低、中度镉污染土壤环境下潜在的低积累型品种,旨为绿色粮食安全生产提供理论依据。
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Screening of low Cd accumulation types of winter wheat varieties in Hebei province
Abstract:In this study, in order to screen the low Cd accumulation varieties from Hebei Province, a total of 140 winter wheat varieties were determined the Cd concentrations as the experiment materials. A pot experiment was conducted to investigate the Cd concentrations of wheat varieties at seedling stage that determined by ICP-MS technology. Statistical results indicated that the biomass of different winter wheat varieties were changed by 3.50 times(the average biomass was 0.50 g, ranged from 0.24 to 0.84 g);and the concentrations of Cd of wheat varieties were changed by 5.Screening of low Cd accumulation types of wheat varieties in Hebei province34 times (the average Cd conceScreening of low Cd accumulation types of winter wheat varieties in Hebei provincentrations was 3.22 mg kg-1, ranged from 1.37 to 7.30 mg kg-1). Used of cluster analysis to screen the low Cd accumulation varieties, the results suggested that the wheat varieties were divided into 4 categories (including low, medium low, medium high and high accumulation types). Sixteen varieties were observed belong to the low Cd accumulation type, including Branch 1, Gaoyou 2018, Jimai 403, Heng 562, Jinhe 9123, etc. These varieties could be used as the potential low-accumulation varieties with exposure to low or moderate Cd contamination soil, aiming to provide a theoretical basis for green food safety production.
Keywords: Cd contamination soil Winter wheat Variety screening
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