青海富硒地区31份小麦新品系硒、铁、锌含量分析

Analysis of Selenium,Iron and Zinc Contents in 31 New Wheat Lines in Selenium-Rich Areas in Qinghai

为了解青海省海东富硒地区小麦籽粒中硒、铁、锌3种微量元素的含量及它们之间的相关性,以种植于高原硒都-青海省平安县石灰窑镇黎明村富硒土壤中的31个小麦新品系为研究对象,采用电感耦合等离子体质谱(ICP-MS)方法测定样品籽粒中硒、铁、锌3种微量元素含量,并运用SPSS 26.0软件进行相关性分析。结果表明:各个品系间微量元素含量均存在明显差异(P<0.01),硒平均含量为0.21 mg/kg,铁平均含量为40.80 mg/kg,锌平均含量为24.51 mg/kg。所测品系中94%样品的硒含量集中分布在0.15~0.30 mg/kg范围之内,达到富硒水平,而87%样品的铁含量以及所有样品的锌含量均未达到国际推荐值。样品籽粒中硒与铁(r=0.10)、硒与锌(r=0.27)、铁与锌(r=0.10)含量之间均存在一定的相关性,其中硒与锌含量之间呈极显著相关。本研究不仅为特殊功能营养品质新品种的选育提供了参考,也为功能营养品质遗传基础的解析提供基础材料。

In order to exploit the contents of three trace elements of selenium,iron and zinc in wheat grains and their correlation in Haidong selenium-rich areas in Qinghai Province,in this study,31 new wheat lines planted in the selenium rich soil of Liming village,Shihuiyao Town,Pingan County,Qinghai Province were selected to as the research object.To determine the contents of three trace elements of selenium,iron and zinc in the sample grains used the inductively coupled plasma mass spectrometry(ICP-MS)method,and SPSS 26.0 software was used for cor-relation analysis.The results showed that there were significant differences in the iron,zinc and selenium concentration among different lines(P<0.01).The average contents of selenium,iron and zinc were 0.21 mg/kg,40.80 mg/kg,and 24.51 mg/kg,respectively.For the selenium,94%of the 31 wheat lines had the concentration ranging from 0.15 to 0.30 mg/kg,which was the selenium enrichment level,while 87%and 100%of 31 lines did not reach the international recommended iron and zinc standard,respectively.There was certain correlation be tween the contents of selenium and iron(r=0.10),selenium and zinc(r=0.27),iron and zinc(r=0.10)in the sample grains,and there was a significant correlation between the contents of selenium and zinc.This study not only provided ref erence for the breeding new varieties with special functional nutritional quality,but also provided the valuable materials for elucidating the genetic basis of functional nutrition quality.